CN105375788B - A kind of adjustable electric source device - Google Patents
A kind of adjustable electric source device Download PDFInfo
- Publication number
- CN105375788B CN105375788B CN201510757269.9A CN201510757269A CN105375788B CN 105375788 B CN105375788 B CN 105375788B CN 201510757269 A CN201510757269 A CN 201510757269A CN 105375788 B CN105375788 B CN 105375788B
- Authority
- CN
- China
- Prior art keywords
- line plate
- voltage
- class line
- conducting wiring
- class
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Rectifiers (AREA)
Abstract
The invention mainly relates to adjustable electric source devices, including mutually covering the upper case and lower case that are combined, wherein the top opening of the bottom opening of upper case and lower case is docked so that fitting together upper case and lower case has the hollow accommodating chambers for forming their inside, a lower-class line plate being fixed on lower case and a top line plate being fixed on upper case are located in hollow accommodating chamber, one of both socket and plug of connector are arranged on lower-class line plate top surface and another one is arranged on the bottom surface of top line plate, and together with socket plugs together with plug, it is mounted on the voltage signal source that an input interface component of lower-class line front edge of board receives alternating current and need to amplify, and be mounted on lower-class line plate rear end an output interface unit provide it is defeated after the voltage signal source is amplified Voltage out.
Description
Technical field
The present invention relates to a kind of general hanging power supply devices, and in particular to one kind is in integrated circuit or circuit under test
Etc. it is tested when cooperation test machine or laboratory and power supply is provided use power supply device.
Background technique
In conventional IC design and packaging and testing field, each wafer businessman or packaging and testing businessman because
The front and back property of equipment purchase time and test equipment supplier respectively tester table model be equipped with source stress it is different, greatly
The voltage source of the test equipment output of most device manufacturers can only provide voltage source as 0-50V or 0-40V or 0-20V.With
The diversification of electronic product, such as LED drive integrated circult on the market now, if attempting to test the integrated electricity of this driving
The similar voltage tester project such as the operating voltage value on road or overvoltage protection voltage value OVP, the then voltage that they are required completely may be used
It can be between 40-100V, that is to say, that practical institute cannot be completely covered in the voltage source of the test equipment output of current device manufacturer
All voltage ranges needed.It faces in this case, is expanded to utilize test equipment, and test in the prior art
Device has versatility and has the characteristics that stable and reliable for performance, and can be realized easy maintenance for engineers and technicians
With easily operated purpose, the present invention realizes output voltage in larger voltage range for one of place of matchmakers's exploitation below
It is worth adjustable external hanging type power supply device or electronic equipment.
Summary of the invention
In an alternate embodiment of the present invention where, provide a kind of adjustable electric source device, for product shape and
It specifically includes that the upper case and lower case for mutually covering and being combined for construction, wherein the bottom opening of upper case
Docked with the top opening of lower case so that fit together upper case and lower case have formed they it is internal in
Empty accommodating chamber, wherein upper case and lower case can be fitted together by the arbitrary prior art, such as be placed in two
Buckle on person mutually fastens, or is screwed, or using bonding agent come gluing etc..It is fixed on lower case
A lower-class line plate on bottom shell plate is located in hollow accommodating chamber, is fixed on a top on the top shell plate of upper case
Wiring board is located in hollow accommodating chamber；One of both socket and plug of one connector are arranged in lower-class line plate top surface
It is upper and another one is arranged on the bottom surface of top line plate, and together with socket plugs together with plug so that lower-class line plate PCB and
Top line plate PCB realizes electrical connection, and the component that both upper and lower part wiring boards respectively weld above can pass through company
It connects device and electrical connection and signal interaction is realized in respective wiring.In addition, further include be mounted on one of lower-class line front edge of board it is defeated
Incoming interface component and an output interface unit for being mounted on lower-class line plate rear end, and have and be arranged in top line plate
The numeral method device of top surface, it is directed at the display window being provided on top shell plate.Also have and is arranged in top line plate top surface
Diode, the illuminator of diode is directed at an indicator hole being provided on top shell plate.
Above-mentioned adjustable electric source device, wherein an input interface component for being mounted on lower-class line front edge of board is received and handed over
Galvanic electricity and the voltage signal source that need to amplify, and be mounted on an output interface unit of lower-class line plate rear end and the voltage is provided
Signal source be amplified after output voltage, and be arranged in top line plate top surface numeral method device alignment be provided with top shell plate
On display window, the numeral method device can show output voltage sampled value either show output voltage be applied to it is negative
The current value of load is flowed through when in load.In addition it can shine at indicator hole when diode is lit.
Above-mentioned adjustable electric source device offers front end notch, lower-class line plate tool on the side wall of lower case front end
There is the front side guidance part extended forward, input interface component is mounted on the guidance part of front side and with front side guidance part one
It rises and is extended outwardly into except lower case from front end notch.
Above-mentioned adjustable electric source device offers rear end notch, lower-class line plate tool on the side wall of lower case rear end
There is the rear side guidance part to extend back, output interface unit is mounted on rear side guidance part and with rear side guidance part one
It rises and is extended outwardly into except lower case from rear end notch.
The armature winding of above-mentioned adjustable electric source device, the Industrial Frequency Transformer installed on lower-class line plate passes through cloth
It sets on first group of input terminal that the conducting wiring on lower-class line plate is electrically connected to input interface component.
Above-mentioned adjustable electric source device, by first group of received alternating current of input terminal (such as conventional exchange
The effective value of alternating current in alternating current, country variant or area slightly has difference) it is transmitted to Industrial Frequency Transformer, the first of Industrial Frequency Transformer
The first alternating voltage is generated on secondary windings and generates the second alternating voltage on the second subprime winding of Industrial Frequency Transformer.
Above-mentioned adjustable electric source device, first bridge rectifier installed on lower-class line plate is by being arranged in
Conducting wiring on lower-class line plate is electrically connected to the first secondary windings, and the first alternating voltage is rectified through the first bridge rectifier
A first capacitor device being mounted on lower-class line plate is transferred to by conducting wiring afterwards, the first friendship is filtered out by first capacitor device
The ripple of pulsating volage after flowing voltage commutation；And the cathode for the zener diode installed on lower-class line plate passes through cloth
It sets the conducting wiring on lower-class line plate and is electrically connected to first capacitor device, the voltage of first capacitor device output is by zener diode
Generate preset first DC voltage.Wherein, a pole plate of first capacitor device is electrically connected to the first bridge rectifier by wiring
The ground terminal GND wiring that another pole plate of the output end of device and first capacitor device is electrically connected on lower-class line plate by wiring
On.And the cathode of zener diode is electrically connected to a pole plate of first capacitor device, the anode of zener diode by wiring
By being routed in the ground terminal GND wiring being electrically connected on lower-class line plate.
Above-mentioned adjustable electric source device, second bridge rectifier installed on lower-class line plate is by being arranged in down
Conducting wiring on portion's wiring board is electrically connected to second subprime winding, and the second alternating voltage leads to after the rectification of the second bridge rectifier
It crosses conducting wiring and is transferred to second capacitor being mounted on lower-class line plate, the second alternating current is filtered out by the second capacitor
The ripple of pulsating volage after repoussage stream；And the linear voltage regulator installed on lower-class line plate is by being arranged in lower line
Conducting wiring on the plate of road is electrically connected to the second capacitor, and the voltage of the second capacitor output carries out voltage by linear voltage regulator and turns
It changes and generates preset second DC voltage in its output end.One pole plate of the second capacitor is electrically connected to the second bridge by wiring
The ground terminal that another pole plate of the output end of formula rectifier and the second capacitor is electrically connected on lower-class line plate by wiring
GND wiring.Linear voltage regulator passes sequentially through the conducting wiring being arranged on lower-class line plate, connector and is arranged in top line
Second DC voltage is transferred to each component on top line plate, example by conductive path as the conducting wiring on plate
Second DC voltage is such as transferred to the power input for the processor (MCU) being mounted on top line plate, thus at this
It manages device and operating voltage is provided.A welding diode is on the top surface of top line plate simultaneously, and its illuminator is from top
At the indicator hole of the top shell plate of shell, if the second DC voltage has preset voltage value, the anode of the diode because
Also by the second DC-voltage supply, (its cathode is electrically connected to the ground connection on top line plate by the wiring on top line plate
Hold in GND wiring), when the second DC voltage is greater than the forward conduction voltage threshold of the diode, the diode is just lit,
Inform that the energization of user's adjustable electric source device can enter working condition.
Above-mentioned adjustable electric source device is equipped with an operational amplifier and an induced electricity on lower-class line plate
Resistance, the first end of inductive reactance are electrically connected to the output of operational amplifier by the conducting wiring being arranged on lower-class line plate
End, the second end of inductive reactance are electrically connected to the one of output interface unit by the conducting wiring being arranged on lower-class line plate
On a output terminal (OUT+) that output voltage is provided；And second group of input terminal of input interface component is by being arranged in down
Conducting wiring on portion's wiring board respectively corresponds the positive and inverting input terminal for being connected electrically in the operational amplifier, the electricity that need to amplify
Pressure signal source VIN is input to the normal phase input end of operational amplifier from one (IN+) in second group of input terminal.
Above-mentioned adjustable electric source device, working power voltage of the first voltage as operational amplifier, and pass through arrangement
First voltage is input to the power input of operational amplifier by the conducting wiring on lower-class line plate.Such as zener diode
Anode the power input of operational amplifier is electrically connected to by wiring.
Above-mentioned adjustable electric source device is equipped with a first resistor and a second resistance on lower-class line plate,
First resistor is connected electrically in inverting input terminal and the ground connection of operational amplifier by the conducting wiring being arranged on lower-class line plate
Between end, one end of first resistor is electrically connected to lower part by conducting wiring by wiring electrical connection inverting input terminal and the other end
In ground terminal GND wiring on wiring board.Second resistance is connected electrically in fortune by the conducting wiring being arranged on lower-class line plate
Between the output end and inverting input terminal for calculating amplifier；The voltage VO=VIN (R2/R1+1) of operational amplifier output, wherein setting
Determine the resistance value that R2 is second resistance and the resistance value that R1 is first resistor.
Above-mentioned adjustable electric source device is equipped with the first divider (voltage divider) on lower-class line plate
With the second divider, they generally contain concatenated two resistance, and the node of two resistive interconnections is as sampling node.First partial pressure
Device is connected electrically between the first end of inductive reactance and ground terminal by the conducting wiring being arranged on lower-class line plate, and second point
Depressor is connected electrically between the second end of inductive reactance and ground terminal by the conducting wiring being arranged on lower-class line plate；Installation
A processor (MCU) on top line plate pass sequentially through the conducting wiring being arranged on top line plate, connector and
It is arranged in conductive path as the conducting wiring on lower-class line plate, from the node of two resistive interconnections in the first divider
Place captures a sampled voltage, captures also from the node of two resistive interconnections in the second divider in the same fashion another
One sampled voltage, two are characterized using voltage across the pressure drop at inductive reactance both ends, calculate flow through induced electricity whereby
The electric current of resistance characterizes load current, and processor is electrically connected to numeral method by the conducting wiring on arrangement top line plate
Device load current value is transported to numeral method device to be shown.
Above-mentioned adjustable electric source device, processor are adopted by what is captured from the first divider and/or the second divider
Sample voltage characterizes the output voltage of proportional relationship therewith, and processor is transported to numeral method device and is shown
Show.
Above-mentioned adjustable electric source device, a switching switch with key for being mounted on top line plate top surface pass through
The conducting wiring being arranged on top line plate is connected electrically between ground terminal and the port switching of processor, and switching switch has
Column key top extended to from a key hole being provided on top shell plate upper case top shell plate outside, column
Key stress at key hole can be pressed to turn on and off switching switch；When pressing keys connect switching switch,
Processor is switched to triggering numeral method device display sampling load current, when pressing keys turn off switching switch, processor
It is switched to the sampled voltage that triggering numeral method device shows output voltage.
Detailed description of the invention
Read it is described further below and referring to the following drawings after, feature and advantage of the invention will be evident:
Figure 1A~1D illustrates the basic structure of adjustable electric source device.
Fig. 2A~2B illustrates the upper housing structure of adjustable electric source device.
Fig. 3 A~3C illustrates the lower case structure of adjustable electric source device.
Fig. 4 A~4B illustrates the hardened structure of lower-class line built in the lower case of adjustable electric source device.
Fig. 5 A~5D illustrates the hardened structure of top line built in the upper case of adjustable electric source device.
Fig. 6 A~6B is illustrated can the numeral method device that has of the top line plate built in upper case.
Fig. 7 A~7C illustrates the structure of three Digital sum tube displays.
Fig. 8 A~8D illustrates each electronic component disposed on the lower-class line plate built in lower case.
Fig. 9 A~9B illustrates the basic structure of Industrial Frequency Transformer.
Specific embodiment
Below in conjunction with each embodiment, clear and complete elaboration, but described reality are carried out to technical solution of the present invention
Applying example only is the present invention with the embodiment used in illustrating is described herein and not all embodiment, based on the embodiments such as this, this field
Technical staff scheme obtained belongs to protection scope of the present invention without making creative work.
Referring to shown in Figure 1A and Figure 1B, being adjustable external hanging type power supply of the present invention or referred to as adjustable power supply dress
The outside schematic diagram set, adjustable electric source device have upper case 101 and lower case 102, they are preferably using exhausted
Made of edge material.And primary efficacy/mechanism of the adjustable electric source device is embodied in: capturing voltage signal source to be amplified
SOURCE VOLTAGE simultaneously generates desired output voltage OUTPUT, so being equipped in the front-end and back-end of adjustable electric source device
It is provided with input interface component 106a and output interface unit 106b.Specifically, the present invention be lower case 102 front end and
Rear end is respectively arranged with input interface component 106a and output interface unit 106b.The bottom surface of lower case 102 is overlooked from Fig. 1 C,
It can also learn the heat release hole that multiple strips arranged side by side are provided on the bottom shell plate of lower case 102 in this embodiment
102c is that a thermal window is constituted using the slit mouth of multiple strips as example in figure, is used as electronic component and is produced
The dissipation approach of raw heat.Furthermore we are from Fig. 1 D it can also be observed that upper case 101 and lower case 102 are respective
Side, be closely assembled by upper case 101 with lower case 102 together with carry out globality and constitute what the present invention was sayed
The entire shell of adjustable electric source device.As for connection/assembling mode of upper case 101 and lower case 102, can use
The buckle being placed on the rwo common in the art mutually fastens, or is screwed, or utilizes bonding agent
Carry out gluing etc..
It is the structural schematic diagram of middle and upper part shell 101 of the present invention referring to fig. 2 shown in A and Fig. 2 B, upper case 101 is one
It is a with bottom opening and be hollow square structure, it have top shell plate 101-1 and it four side wall 101-2 constitute
One rectangular tubular structure, wherein the bottom opening of the bottom opening of this tubular structure namely upper case 101 is one spacious
Mouthful, but the top opening corresponding with bottom opening of tubular structure is then covered by top shell plate 101-1, so that outside top
Shell 101 is rendered as the hollow square structure with bottom opening.The top shell plate 101-1 and side wall 101-2 of upper case 101 are one
Integrated molding and both component appearance as a whole in a preferred embodiment.Turning also now to shown in Fig. 2 B, go back
A display window 101b through top shell plate 101-1 thickness, an indicator hole are respectively arranged on top shell plate 101-1
They are arranged on top located adjacent one another in positional relationship, and preferably by 101c and key hole 101d, this three
The opposed rear end of shell 101.Meanwhile multiple screw columns with female screw hole are additionally provided in the rear end of upper case 101
101a, wherein screw column 101a is located at the inside of upper case 101 and is retained on the inner wall of top shell plate 101-1.For multiple
Although being arbitrary for the distributing position of screw column 101a, in some alternative embodiments, screw can also be set
Column 101a is preferably at the connecting line that top shell plate 101-1 is connected with side wall 101-2 phase, and each screw column is along top shell plate
The edge of 101-1 is arranged.In fig. 2b, the row for example in two rows of screw column 101a is distributed in one in one group of opposing sidewalls
At the connecting line of both side wall 101-2 and top shell plate 101-1, another row is then distributed in another in one group of opposing sidewalls
At the connecting line of both side wall 101-2 and top shell plate 101-1.Screw column 101a and top shell plate 101- in some optional embodiments
1 is integrally formed.
It is the structural schematic diagram of middle and lower part shell 102 of the present invention, lower case 102 is one shown in referring to Fig. 3 A and Fig. 3 B
A to have open-topped and be hollow square structure, it has bottom shell plate 102-1 and its four side wall 102-2 are constituted
One rectangular tubular structure, wherein the top opening of this tubular structure namely the top opening of lower case 102 are one spacious
Mouthful, but the bottom opening corresponding with top opening of tubular structure is then covered by bottom shell plate 102-1, so that outside lower part
Shell 102 is rendered as with open-topped hollow square structure.The bottom shell plate 102-1 and side wall 102-2 of lower case 102 are one
It is integrally formed in a preferred embodiment and both component as a whole.Turning also now to shown in Fig. 3 B and Fig. 3 C,
We are also provided with the heat dissipation of multiple strips arranged side by side through bottom shell plate 102-1 thickness on bottom shell plate 102-1
Hole 102c, heat release hole 102c are preferably distributed in the opposed rear end of bottom shell plate 102-1.In addition, being also set up on bottom shell plate 102-1
There are multiple screw column 102d with female screw hole, screw column 102d to be located at the inside of lower case 102 and is retained on bottom shell plate
On 102-1.In multiple screw column 102d, multiple screw column 102d can also be set preferably close to bottom shell plate 102-1 and side
At the connecting line that wall 102-2 phase is connected, and arranged along the connecting line.In figure 3b, for example in two rows of screw column 101a one
At the connecting line for arranging a both side wall and bottom shell plate 102-1 being distributed in one group of opposing sidewalls 102-2a, and another row is then
At the connecting line of another side wall and both bottom shell plate 102-1 for being distributed in one group of opposing sidewalls 101-2a.It is some can
In the embodiment of choosing, bottom shell plate 102-1 and screw column 102d are arranged to be integrally formed.Referring to shown in Fig. 3 A and Fig. 3 C, in lower part
The front end of shell 102 is provided with a notch 102a, while the rear end of lower case 102 being provided with a notch 102b.
It include in positional relationship one group of side wall 102-2a relative to each other and in position in four side walls of lower case 102
Relationship another group of side wall 102-2b (Fig. 3 A) relative to each other.For later group side wall 102-2b, it is located at the lower case
The notch 102a (such as square notch) being formed on one side wall 102-2b of 102 front ends is opened type, it is meant that this is cut
Mouth 102a is extended to from the edge placement of side wall 102-2b of the front end from the center of side wall 102-2b, leads to side wall
The edge of 102-2b can have one section of notch in the top opening side of lower case 102.At the same time, it is located at lower case 102
It is not but opened type namely notch 102b that a notch 102b (such as square notch) is formed by the side wall 102-2b of rear end
At the center of side wall 102-2b, but it does not extend to the edge of the side wall 102-2b of the rear end, side wall 102-2b's
Edge will not cause any notch in the top opening side of lower case 102, Gu notch 102b be it is closed can block/
Handle the lower-class line plate 103 being introduced below.
It is the schematic diagram of lower-class line plate 103 built in lower case 102, a printing electricity referring to fig. 4 shown in A and Fig. 4 B
Road plate PCB namely lower-class line plate 103 have multiple lock hole 103-3, when we are by lower-class line plate 103 and lower case
102 when fit together, the corresponding bottom case with the lower case 102 of each lock hole 103-3 of lower-class line plate 103
A screw column 102d on plate 102-1, which is aligned, to be overlapped, it is therefore intended that, each screw 104a may be passed through a lock hole
103-3 and screw to the female screw hole of a screw column 102d, thus in this way tightly by lower-class line plate 103
It is fixed on lower case 102.And the hollow cavity of lower case 102, which can just accommodate, places the lower-class line plate 103.
Notably, as a part of board structure of circuit, lower-class line plate 103 has a front side guidance part in its front end
103-1 and rear end have one rear side guidance part 103-2, wherein front side guidance part 103-1 and rear side guidance part 103-2 ruler
The very little size less than 103 ontology of lower-class line plate, so that front side guidance part 103-1 can just penetrate lower case from interspersed
102 front end notch 102a (referring to Fig. 3 A) and the outside for extending to lower case 102, equally, rear side guidance part 103-2 is just
From the interspersed rear end notch 102b (referring to Fig. 3 A) through lower case 102 and the outside of lower case 102 can be extended to.This
It is an output interface unit 106b peace because an input interface component 106a is mounted at the position guidance part 103-1 of front side
At the position rear side guidance part 103-2, then input signal can pass to input interface component 106a and output signal can be with
It is captured from output interface unit 106b.In Fig. 4 A and Fig. 4 B, input interface component 106a has one or more table top knots
Structure 103-1a, 103-1b and mesa structure 103-1c, 103-1d, each mesa structure is provided with to carry out electrically with external circuit
The metal contact chip of connection.Corresponding to be, output interface unit 106b has one or more mesa structure 103-2a, 103-
2b is provided with the metal contact chip (input terminal) being electrically connected with external circuit on each mesa structure.As can
The embodiment of choosing can be set between adjacent isolation mesa-structures and be dielectrically separated from plate to prevent short circuit and signal mutual interference.
Referring to shown in Fig. 5 A and Fig. 5 B, being the schematic diagram of top line plate 105 built in upper case 101, a printing electricity
Road plate PCB namely top line plate 105 have multiple lock hole 105-1, when we are by top line plate 105 and upper case
101 when fit together, the corresponding top shell with the upper case 101 of each lock hole 105-1 of top line plate 105
Screw column 101a alignment on plate 101-1 is overlapped (in order to make it easy to understand, can combine observation with Fig. 2A~2B), this
Sample setting purpose is that each screw may be passed through a lock hole 105-1 and screw to the interior spiral shell of a screw column 101a
Among wire hole, so that top line plate 105 is tightly held on upper case 101 in this way.And upper case
101 hollow cavity, which can just accommodate, places the top line plate 105.With various welding manners on top line plate 105,
Such as each component is arranged to above it by the modes such as patch.We are by numeral method device 105a, processor 105b
(MCU), crystal oscillator 105c and a switch 105d and a diode 105e welding with key are arranged in top line plate
On 105, and these components are all mounted in upper surface/top surface of top line plate 105.The socket of connector 105f is then
It is mounted on lower surface/bottom surface of top line plate 105, can be learned from Fig. 5 C and Fig. 5 D.Conventionally, top line plate 105
The component of upper installation either with pin type pin compatible with the through-hole on circuit board otherwise with the weldering on circuit board
The compatible patch type welding foot of disk, thus when the grade components are installed on circuit board as similar top line plate 105
After electrical connection can be realized between circuit board, be also equivalent between different element and element realize electrical connection.Industry
Boundary tool usually intellectual both knows about, and circuit board is generally using insulating substrate as substrate but also is that electronic component electrically connects
There is conducting wiring on the supplier connect, the single side of circuit board or two sides, and the through-hole VIA through circuit board can be used as component
Jack used in, also the route of two levels or more can be made to be connected each other.It actually can be by the pin/welding foot and through-hole of component
Or pad realized by conductive bonding materials such as scolding tin classes it is fixed and conductive, and through-hole or pad also with some conducting wirings
It is to be electrically connected, so that the different components being installed on circuit board are electrically connected to each other by conducting wiring realization.Switch
105d and diode 105e should have certain height, when top line plate 105 and upper case 101 fit together
When, key hole 101d on the top shell plate 101-1 of the key alignment upper case 101 of switch 105d and from key hole 101d
China and foreign countries expose, and diode 105e is then directed at the indicator hole 101c on the top shell plate 101-1 of upper case 101 and from indicator hole
The China and foreign countries 101c expose.Equally, numeral method device 105a is directed at the display window on the top shell plate 101-1 of upper case 101
101b simultaneously exposes outside to come from display window 101b, this can understand in conjunction with Fig. 2 B and Fig. 6 A~6B.Fig. 6 A is in vertical view
Top shell plate 101-1, Fig. 6 B of portion's shell 101 are the top shell plate 101-1 of the upper case 101 from side.Optionally implementing
In example, Fig. 7 A and Fig. 7 B and Fig. 7 C illustrate three numeral method device 105a, and what numeral method device 105a had inserts
Stitch, which can dock, to be inserted into top line plate 105 in corresponding through-hole VIA, uses scolding tin as numeral method device 105a and upper
Reach the welding material of fixing and electrical connection between portion's wiring board 105.
Referring to shown in Fig. 8 A and Fig. 8 B, being the schematic diagram of the lower-class line plate 103 built in lower case 102, lower-class line
Industrial Frequency Transformer 103a, electrolytic capacitor 103b, operational amplifier 103c, adjustable resistance 103d and connector are installed on plate 103
The plug 103e of 105f and one group of diode 106f and one group of diode 103g.It is wherein mounted on above lower-class line plate 103
Plug (plug) 103e of a connector 105f need and be mounted on a company on top line plate 105 in Fig. 5 C~5D
The socket (socket) for meeting device 105f is adapted, and plug plug together on socket to the rwo combines and it is electric each other
Gas connection.These components for being installed on lower-class line plate 103 or draw with pin type compatible with the through-hole on circuit board
Foot or with patch type welding foot compatible with the pad on circuit board, thus when the grade components are installed to similar to lower part
Electrical connection can be realized after on circuit board as wiring board 103 between circuit board, be also equivalent to different element with
Electrical connection is realized between element.Fig. 8 C and Fig. 8 D illustrate showing for each component being mounted on above lower-class line plate 103
It is intended to.It can be learned from Fig. 8 D, the front end of lower-class line plate 103 has one with a front side guidance part 103-1 and in rear end
A rear side guidance part 103-2, front side guidance part 103-1 can just be from the interspersed front end notch 102a through lower case 102
(referring to Fig. 3 C) and the outside for extending to lower case 102, same rear side guidance part 103-2 can just penetrate lower part from interspersed
The rear end notch 102b (reference can be made to Fig. 3 C) of shell 102 and the outside for extending to lower case 102.This is because an input
Interface unit 106a is mounted at the position guidance part 103-1 of front side, and an output interface unit 106b is mounted on rear side guidance part
At the position 103-2, input signal can pass to input interface component 106a and output signal can be from output interface unit
It is captured at 106b.Fig. 9 A and Fig. 9 B illustrate the type of device of Industrial Frequency Transformer 103a, and what Industrial Frequency Transformer 103a had inserts
Stitch, which can dock, to be inserted into lower-class line plate 103 in corresponding through-hole VIA, uses scolding tin as Industrial Frequency Transformer 103a and lower part
Reach the welding material of fixing and electrical connection between wiring board 103.
In adjustable electric source device, B, is linked into input interface component 106a's for 220 volts of electric main referring to fig. 4
The metal contact chip that mesa structure 103-1a, 103-1b respectively come with, specifically, mesa structure 103-1a (such as meet AC220
Firewire), the metal contact chip that respectively comes with of 103-1b (such as connecing AC220 zero curve) continues through adjacent with them and is arranged in
Conducting wiring PCB Routing on lower-class line plate 103, electric main is conveyed to and is mounted on lower-class line plate 103
The armature winding of Industrial Frequency Transformer 103a obtains one first friendship by decompression in the first secondary windings of Industrial Frequency Transformer 103a
Galvanic electricity (such as virtual value be 65V alternating current), the first alternating current is by first bridge being mounted on lower-class line plate 103
Formula rectifier is rectified, such as connects and composes first bridge rectifier by four diode 103f in Fig. 8 B.In addition,
The output of first bridge rectifier can reduce ripple, and lower-class line by the capacitance voltage stabilizing being mounted on lower-class line plate 103
What the zener diode not illustrated on plate 103 specified generation after the further pressure stabilizing of output progress of the first bridge rectifier
Preset voltage value is supplied to the supply voltage that operational amplifier 103c is run as work, first grade of Industrial Frequency Transformer 103a
It is the conducting wiring connection by being located on lower-class line plate 103, the first bridge rectifier between winding and the first bridge rectifier
It is to be realized by the conducting wiring on lower-class line plate 103 between device and zener diode and between operational amplifier 103c
Connection.
Another group of mesa structure 103-1c, 103-1d of B and Fig. 8 B referring to fig. 4, output interface unit 106a respectively come with
Metal contact chip be connected respectively to the normal phase input end (+IN) and inverting input terminal (- IN) of operational amplifier 103c, wherein
This connection relationship between metal contact chip and operational amplifier 103c is also real by the conducting wiring on lower-class line plate 103
Existing.The metal that the output end of operational amplifier 103c then has with a mesa structure 103-2a of output interface unit 106b
Contact chip is by wiring connection, in the metal contact chip that another mesa structure 103-2b of output interface unit 106b has
Current potential is identical as the ground reference of voltage OUTPUT that the output end of operational amplifier 103c exports, such as operational amplifier
In the metal contact chip that the ground reference VSS of 103c is had to mesa structure 103-2b also by wired coupling, so most
The metal contact chip that we have in the mesa structure 103-2a metal contact chip (+OUT) having and mesa structure 103-2b eventually
Output voltage OUTPUT is generated between (- OUT).Wherein between the output end and its inverting input terminal of operational amplifier 103c
It is connected with adjustable resistance (assuming that resistance value R2), and makes the reverse phase of operational amplifier 103c using the calculation of a positive feedback
A fixed resistance R1 is connected between input terminal and ground terminal GND, this connection relationship is all by lower-class line plate 103
What conducting wiring was realized.The voltage VO of operational amplifier 103c output meets functional relation: VO=VIN (R2/R1+1), wherein electricity
Pressing VIN is the voltage value inputted in the normal phase input end (+IN) of operational amplifier 103c, if attempting to change operational amplifier
The range of the voltage VO of 103c output, it is only necessary to suitably zoom in or out the value of resistance R2/R1.
In addition, the second subprime winding in Industrial Frequency Transformer 103a obtains second alternating current by decompression and (such as has
Valid value is the alternating current of 8V), the second alternating current here is by second bridge rectifier being mounted on lower-class line plate 103
It is rectified, such as connects and composes second bridge rectifier by four diode 103g in Fig. 8 B.Other second bridge-type
The output of rectifier can reduce ripple by the capacitance voltage stabilizing being mounted on lower-class line plate 103, and on lower-class line plate 103
The low-pressure linear voltage-stablizer (low dropout regulator) not illustrated carries out the output voltage of the second bridge rectifier
Further modulation forms burning voltage (such as 5V).The second subprime winding and the second bridge rectifier of Industrial Frequency Transformer 103a
Between be conducting wiring connection by being located on lower-class line plate 103, the second bridge rectifier and low-pressure linear voltage-stablizer LDO
Between be that connection is realized by conducting wiring on lower-class line plate 103.
Referring to Fig. 8 C, it is mounted on 103 upper surfaces of lower-class line plate/top surface plug 103e (belonging to connector 105f) and figure
It is mounted on socket (the belonging to connector 105f) adaptation of 105 lower surface of top line plate in 5C, and plugs together and makes lower part together
Each component on each component and top line plate 105 on wiring board 103 can pass through wiring and connector
105f and be electrically connected to each other.It in an alternative embodiment, can also be on lower-class line plate 103 either in top line plate
One inductive reactance (such as 2W/100 ohm) is installed, the first end of inductive reactance is connected to operational amplifier 103c's on 105
Output end and second end is connected in the metal contact chip (+OUT) that mesa structure 103-2a has, that is to say, that in inductive reactance
Second end at provide output voltage VO.It can also either be installed on top line plate 105 on lower-class line plate 103
The divider being made of resistance so that the voltage VO exported to operational amplifier 103c carries out partial pressure sampling, and flows through induced electricity
The electric current of resistance then characterizes the size of current for flowing through load.First divider can be welded on lower-class line plate 103 (not
Illustrate) and second divider (not illustrating), the first divider by be arranged on lower-class line plate 103 conductive fabric
Line is connected electrically between the first end of inductive reactance and ground terminal GND, and the second divider is then by being arranged on lower-class line plate
Conducting wiring be connected electrically between the second end of inductive reactance and ground terminal.The processor being mounted on top line plate 105
105b passes sequentially through the conducting wiring being arranged on top line plate 105, connector 105f and is arranged on lower-class line plate 103
Conducting wiring capture a sampled voltage from the node of two resistive interconnections in the first divider, and from the second divider
In two resistive interconnections node at capture another sampled voltage, calculate flow through the electric current of inductive reactance to characterize whereby
Load current.Such as a voltage sample port of processor 105b is connected on the second divider (not illustrating) to capture sense
The sampled value of the voltage at the second end of resistance is answered, and another voltage sample port of processor 105b is connected to the first partial pressure
The sampled value of the voltage at first end on device (not illustrating) to capture inductive reactance, load current can pass through inductive reactance two
The voltage value at end is directly calculated, and is equivalent to also while sampling acquisition and has arrived load current.Crystal oscillator 105c in Fig. 5 B is to place
It manages device 105b and external clock reference, namely usually sayed clock oscillation signal CLOCK is provided, both passes through top line plate
Conducting wiring on 105 is electrically connected to each other.Also numeral method device 105a and processor 105b will be passed through top line plate
Conducting wiring on 105 is electrically connected to each other, so as to by the sampled value of load current and output voltage VO with the side of specific value
Formula is shown on numeral method device 105a, wherein the switch 105d with key is switching switch, switches switch 105d connection
To a selection port of processor 105b, when needing numeral method device 105a to show load current by switch 105d by
Key pressing, then it is low level that the selection port of processor 105b, which is connected to ground connection GND by the switching switch 105d being switched on,
It is switched to display sampling load current.When needing numeral method device 105a to show output voltage VO by switch 105d by
Key is pressed again, then switches switch 105d disconnection, namely be switched to output voltage VO or its sampled value.Wherein it is welded on upper lines
The diode 105e of 105 upper surface of road plate is used for the power supply of video-stream processor 105b, if low-pressure linear voltage-stablizer LDO is mentioned
Having supplied expected supply voltage, then the voltage lights diode 105e.
The present invention can for example provide the adjustable external hanging type power supply of 0-100V: make printing after first drawing PCB figure as required
Circuit board, package technique require have at 3 points: first print the character silk-screen of white, the plate thickness of circuit board be 1.6mm and
The copper thickness of use is more than or equal to 35um, and the technique for increasing printed circuit board a spray tin material to prevent blockization and ensures
Welding is good, assembles PCBA again later, the basic electric property of general-purpose table look-up PCB is first used before element welding, if performance is all
Well, it is just successively welded on a printed circuit board according to the sequence of component size from small to large, the polarity of element is confirmed when welding
It is whether correct with the position of installation.Power supply is connected after completing with display board with the winding displacement of related (two XH-9A connectors)
It is good, it is electrified, I/O channel concatenation such as Agilent voltage and dual channel oscilloscope are made tentatively electrically to check, then use spiral shell
Silk securely fixes all printed circuit board assemblies inside the shell, then does vibration experiment and high/low temperature senile experiment, finally
It is that EMC is anti-interference and burst of pulses experiment again, is powered again after the completion of all experiments respectively with its accuracy of standard sample test verification.
In use, the city ac input end Kou Yu the AC220V electrical connection of the adjustable external hanging type power supply of 0-100V is determined first, then using defeated
The input port (+IN) and (- IN) of incoming interface component 106a is connected respectively to the signal source that need to amplify voltage (it is required that input voltage
Within the scope of 0-20V), finally me can be obtained in the output port (+OUT) of output interface unit 106b and the port (- OUT)
Desired output voltage VO.Having been well known the different components on same circuit board in view of those skilled in the art is synchronous be somebody's turn to do
Wiring on circuit board is electrically connected to each other and transmits signal, so repeating one by one not to this herein.It is otherwise noted that
Component in various boards can be electrically connected to each other by the wiring on circuit board and the realization of the connector between circuit board
With transmitting signal.
In some optional embodiments, by principles described herein it is found that alternating current AC220V is defeated through transformer
Enter to be depressured to become AC alternating voltage (such as 65V) to export from first group of secondary coil, then be rectified through the first bridge rectifier
Afterwards by being supplied to the power end of operational amplifier after resistance current limliting after zener diode pressure stabilizing again.And amplifier amplifier
Circuit is positive feedback connection type, so that VO=VIN (R2/R1+1) can suitably zoom in or out electricity if amplification factor will be changed
Hinder the value of R2/R1.And alternating current AC220V is inputted through transformer, decompression becomes AC alternating voltage (such as 8V) from the
The output of two groups of secondary coils, then through the rectification of the second bridge rectifier again through for example three-terminal voltage-stabilizing tubular type (for example, by using
U1L7805 the power end of processor MCU is supplied to after linear voltage regulator LDO).The sensed electricity of the output voltage of operational amplifier
The input port A/D that processor is given after resistance (such as 100 Europe 2W) and its sampling at both ends and divider resistance, handles through processor and counts
Three Digital sum tube displays are allowed to show specific voltage value after calculation, if it is to be understood that effective supply loads how many electric current, by switching
Switch.An object of the present invention is to provide a kind of (such as 0-100V) adjustable external hanging type of larger range amplitude voltage value
Power supply device, it is able to satisfy demand of most test machine to voltage source extension boosting, while this voltage source currently on the market
Because port is unified simple and clear, management identification and maintenance easy to produce, voltage source is shielded using stainless steel casing, in antidetonation resistance to compression
On have remarkable effect.The cabinet being made of display board, power panel, upper cover and lower cover further includes installing on a printed circuit board
Test circuit.Adjustable external hanging type power supply device provided by the invention as the above scheme is adopted, is allowed to and prior art phase
Compare, have the following advantages that and good effect: 1, (such as 0-100V) that the present invention provides larger range amplitude voltage value can
It adjusts external hanging type power supply device due to using current limliting reducing protective circuit, core integrated computation can be protected to be placed on circuit, extension makes
Use the service life.2, the present invention provides (such as the 0-100V) of larger range amplitude voltage value due to using Industrial Frequency Transformer conversion electricity
Pressure compares other power supply power supply modes, and output voltage ripple is small, guarantees the accuracy of voltage source amplification precision.3, the present invention mentions
For larger range amplitude voltage value (such as 0-100V) due to using three Digital sum pipes and Voltage to current transducer key, can be straight
The size for seeing ground display actual output voltage and electric current, is easy to make core and just compares.4, the present invention provides larger range amplitude electricity
(such as 0-100V) of pressure value is due to making voltage and current sampling using processor MCU and making internal data processing, arithmetic speed
The fast and good in anti-interference performance with transient response speed.5, the adjustable external hanging type power supply device tailored appearance beauty of 0-100V of the present invention
Sight, cost is relatively low, small in size, and complex manufacturing technology is accurate, easy to operate, is easy to and other test equipments cooperate and wide application
It is general.In an alternative embodiment, we set the input for being connected to the normal phase input end (+IN) of operational amplifier 103c
The range of voltage VIN is not less than 3 volts.
Above by description and accompanying drawings, the exemplary embodiments of the specific structure of specific embodiment, foregoing invention are given
Existing preferred embodiment is proposed, but these contents are not intended as limiting to.For a person skilled in the art, in reading
State it is bright after, various changes and modifications undoubtedly will be evident.Therefore, appended claims, which should be regarded as, covers the present invention
True intention and range whole variations and modifications.In Claims scope the range of any and all equivalences with it is interior
Hold, is all considered as still belonging to the intent and scope of the invention.
Claims (12)
1. a kind of adjustable electric source device characterized by comprising
The upper case and lower case being combined mutually are covered, wherein the top of the bottom opening of upper case and lower case
Open butt joint to fit together, and upper case and lower case have the hollow accommodating chambers for forming their inside；
A lower-class line plate on the bottom shell plate of lower case is fixed on to be located in hollow accommodating chamber；
A top line plate on the top shell plate of upper case is fixed on to be located in hollow accommodating chamber；
One of both socket and plug of connector are arranged on lower-class line plate top surface and another one is arranged in upper lines
On the bottom surface of road plate, and together with socket plugs together with plug；
It is mounted on the voltage signal source that an input interface component of lower-class line front edge of board receives alternating current and need to amplify, and
An output interface unit for being mounted on lower-class line plate rear end provides the output voltage after the voltage signal source is amplified；
The numeral method device that top line plate top surface is arranged in is directed at the display window being provided on top shell plate, numeral method
Device shows the current value that load is flowed through when the sampled value of output voltage or display output voltage are applied in load；
One operational amplifier and an inductive reactance are installed on lower-class line plate, wherein the first end of inductive reactance passes through
The conducting wiring being arranged on lower-class line plate is electrically connected to the output end of operational amplifier, and the second end of inductive reactance passes through cloth
It sets on the output terminal of an offer output voltage that the conducting wiring on lower-class line plate is electrically connected to output interface unit；
And
Second group of input terminal of input interface component is respectively corresponded by the conducting wiring being arranged on lower-class line plate to be electrically connected
The positive and inverting input terminal in the operational amplifier are connect, the voltage signal source VIN that need to amplify is from second group of input terminal
One is input to the normal phase input end of operational amplifier.
2. a kind of adjustable electric source device according to claim 1, which is characterized in that opened on the side wall of lower case front end
Equipped with front end notch, lower-class line plate has the front side guidance part extended forward, and input interface component is mounted on front side and leads
Draw on portion and as from front end, notch extends outwardly into except lower case front side guidance part together.
3. a kind of adjustable electric source device according to claim 1, which is characterized in that opened on the side wall of lower case rear end
Equipped with rear end notch, lower-class line plate has the rear side guidance part to extend back, and output interface unit is mounted on rear side and leads
Draw on portion and as from rear end, notch extends outwardly into except lower case rear side guidance part together.
4. a kind of adjustable electric source device according to claim 1, which is characterized in that one installed on lower-class line plate
The armature winding of Industrial Frequency Transformer is electrically connected to the of input interface component by the conducting wiring being arranged on lower-class line plate
On one group of input terminal.
5. a kind of adjustable electric source device according to claim 4, which is characterized in that connect by first group of input terminal
The alternating current transmission of receipts generates the first alternating voltage and in work to Industrial Frequency Transformer on the first secondary windings of Industrial Frequency Transformer
The second alternating voltage is generated on the second subprime winding of frequency power transformer.
6. a kind of adjustable electric source device according to claim 5, which is characterized in that one installed on lower-class line plate
First bridge rectifier is electrically connected to the first secondary windings, the first alternating current by the conducting wiring being arranged on lower-class line plate
Pressure is transferred to be mounted on lower-class line plate first capacitor device by conducting wiring after the rectification of the first bridge rectifier,
The ripple of pulsating volage after filtering out the first ac voltage rectifier by first capacitor device；And
The cathode for the zener diode installed on lower-class line plate is electric by the conducting wiring being arranged on lower-class line plate
It is connected to first capacitor device, the voltage of first capacitor device output generates preset first DC voltage by zener diode.
7. a kind of adjustable electric source device according to claim 5, which is characterized in that one installed on lower-class line plate
Second bridge rectifier is electrically connected to second subprime winding, the second alternating current by the conducting wiring being arranged on lower-class line plate
Pressure is transferred to be mounted on lower-class line plate second capacitor by conducting wiring after the rectification of the second bridge rectifier,
The ripple of pulsating volage after filtering out the second ac voltage rectifier by the second capacitor；And
The linear voltage regulator installed on lower-class line plate is electrically connected by the conducting wiring being arranged on lower-class line plate
To the second capacitor, the voltage of the second capacitor output carries out voltage conversion by linear voltage regulator and generates the second DC voltage.
8. a kind of adjustable electric source device according to claim 6, which is characterized in that the first DC voltage is put as operation
The working power voltage of big device, is input to operation for the first DC voltage by the conducting wiring being arranged on lower-class line plate and puts
The power input of big device.
9. a kind of adjustable electric source device according to claim 6, which is characterized in that be equipped with one on lower-class line plate
A first resistor and a second resistance, first resistor are connected electrically in operation by the conducting wiring being arranged on lower-class line plate
Between the inverting input terminal and ground terminal of amplifier, second resistance is electrically connected by the conducting wiring being arranged on lower-class line plate
Between the output end and inverting input terminal of operational amplifier；
The voltage VO for exporting operational amplifier meets VO=VIN (R2/R1+1), wherein setting R2 is the resistance value of second resistance
And R1 is the resistance value of first resistor.
10. a kind of adjustable electric source device according to claim 6, which is characterized in that be equipped on lower-class line plate
One the first divider and second divider, the first divider are electrically connected by the conducting wiring being arranged on lower-class line plate
It connects between the first end and ground terminal of inductive reactance, the second divider is electric by the conducting wiring being arranged on lower-class line plate
It is connected between the second end of inductive reactance and ground terminal；
A processor being mounted on top line plate passes sequentially through the conducting wiring being arranged on top line plate, connector
One is captured from the node of two resistive interconnections in the first divider with the conducting wiring being arranged on lower-class line plate to adopt
Sample voltage, and another sampled voltage is captured from the node of two resistive interconnections in the second divider, stream is calculated whereby
The electric current of sensed resistance characterizes load current, and processor is transported to numeral method device and shown.
11. a kind of adjustable electric source device according to claim 6, which is characterized in that processor from first by dividing
The sampled voltage captured on device and/or the second divider characterizes the output voltage of proportional relationship therewith, and processor will
It is transported to numeral method device and is shown.
12. a kind of adjustable electric source device according to claim 11, which is characterized in that be mounted on top line plate top surface
A switching switch with key ground terminal and processing be connected electrically in by the conducting wiring being arranged on top line plate
Between device, the top for the column key that switching switch has extends to upper case from a key hole being provided on top shell plate
Top shell plate outside, column key stress at key hole can be pressed turns on and off switching switch；
When pressing keys connect switching switch, processor is switched to triggering numeral method device display sampling load current, when
When pressing keys shutdown switching switch, processor is switched to the sampled voltage that triggering numeral method device shows output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510757269.9A CN105375788B (en) | 2015-11-09 | 2015-11-09 | A kind of adjustable electric source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510757269.9A CN105375788B (en) | 2015-11-09 | 2015-11-09 | A kind of adjustable electric source device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105375788A CN105375788A (en) | 2016-03-02 |
| CN105375788B true CN105375788B (en) | 2019-06-11 |
Family
ID=55377672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510757269.9A Active CN105375788B (en) | 2015-11-09 | 2015-11-09 | A kind of adjustable electric source device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105375788B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101146420A (en) * | 2006-09-12 | 2008-03-19 | 明基电通股份有限公司 | Display device and electronic device |
| CN101401498A (en) * | 2006-02-10 | 2009-04-01 | 美国能量变换公司 | Storage rack management system and method |
| CN205232046U (en) * | 2015-11-09 | 2016-05-11 | 上海芯哲微电子科技有限公司 | Power supply unit with adjustable |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7154755B2 (en) * | 2004-04-12 | 2006-12-26 | Richard Alberto Araujo | Power supply assembly |
| US20060136622A1 (en) * | 2004-12-21 | 2006-06-22 | Spx Corporation | Modular controller apparatus and method |
-
2015
- 2015-11-09 CN CN201510757269.9A patent/CN105375788B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101401498A (en) * | 2006-02-10 | 2009-04-01 | 美国能量变换公司 | Storage rack management system and method |
| CN101146420A (en) * | 2006-09-12 | 2008-03-19 | 明基电通股份有限公司 | Display device and electronic device |
| CN205232046U (en) * | 2015-11-09 | 2016-05-11 | 上海芯哲微电子科技有限公司 | Power supply unit with adjustable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105375788A (en) | 2016-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2955528B1 (en) | Near-infrared reading device and ammeter | |
| JP5258815B2 (en) | Power measurement system | |
| CN105375788B (en) | A kind of adjustable electric source device | |
| CN102062808A (en) | Front-end equipment power supply voltage detection circuit for video monitoring system, and electronic monitoring equipment | |
| CN205232046U (en) | Power supply unit with adjustable | |
| CN211718337U (en) | Composite sensor based on current transformer | |
| CN105203813B (en) | Electrical plug-in measuring equipment | |
| CN207457318U (en) | A kind of modular electric energy meter | |
| KR101856670B1 (en) | A bus bar for a distribution board capable of measuring a current by combining a shunt resistor and a method of manufacturing the same, and a bus bar module | |
| CN110492758A (en) | A kind of high-voltage power unit and high-voltage frequency converter | |
| CN102981134B (en) | Intelligent display device tester of switch cabinet | |
| CN109672322A (en) | The detection circuit and control circuit of switch converters | |
| CN109587993A (en) | A kind of control cabinet modular design method based on PCB | |
| CN110596513B (en) | Hall assembly voltage detection device and Hall assembly performance detection device | |
| CN100517903C (en) | Protecting circuit of AC power supply for preventing misconnection | |
| CA2954404C (en) | Voltage booster for utility meter | |
| JP6264684B2 (en) | Distribution board and cabinet for distribution board | |
| CN208477024U (en) | A kind of rectifier bridge aging board, rectifier bridge aging board component | |
| US20110316711A1 (en) | Pocket grounding device without power socket | |
| CN208315934U (en) | A kind of WIFI intelligent socket | |
| CN107070259A (en) | Power circuit for electric energy meter | |
| CN208721718U (en) | Portable high-accuracy testing current case | |
| CN107874319A (en) | Electronic cigarette and its power supply architecture | |
| CN212206157U (en) | Portable sensor detection case | |
| CN219997263U (en) | Power module test fixture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |