CN208548825U - Power supply for teaching - Google Patents
Power supply for teaching Download PDFInfo
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- CN208548825U CN208548825U CN201821320386.4U CN201821320386U CN208548825U CN 208548825 U CN208548825 U CN 208548825U CN 201821320386 U CN201821320386 U CN 201821320386U CN 208548825 U CN208548825 U CN 208548825U
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Abstract
The utility model relates to a kind of Power supply for teaching, the Power supply for teaching include for carrying out the counting circuit of operation to input signal, the encoding control circuit for encode driving, the output controller cut-off for control circuit and the transformer coding winding for generating different output voltages；The counting circuit is connected with the encoding control circuit, the encoding control circuit is connected with the output controller, the output controller is connected with transformer coding winding, it does not need using annular iron core transformer, the transformer of any shape iron core relatively simple for structure can be used, exchange pure sine wave output voltage step-less adjustment can be completed, it is of less demanding to production equipment, it is easy to produce.
Description
Technical field
The utility model relates to power technique fields, and in particular to a kind of Power supply for teaching.
Background technique
With development in science and technology, education sector has poured in the Power supply for teaching of more and more types.
But in the related technology, the exchange pure sine wave low pressure Technology of stepless that Power supply for teaching generally uses, need with
Based on toroidal transformer, mechanical rotation is carried out along the loop winding of toroidal transformer by slidding carbon brush, by the defeated of loop winding
Voltage is transmitted to the output end of power supply out, realizes the adjusting of electric power output voltage.
Since this regulative mode is realized using rotary movable carbon brush, it is desirable that transformer must be annular core ability
It realizes, structure is more complicated, needs professional equipment to make, and is not easy to produce.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of Power supply for teaching, it is not necessary to use annular core, also be not required to
Want very professional production equipment, it will be able to realize pure sine wave low pressure stepless-adjustment using the transformer with any shape iron core
Section.
In order to achieve the above object, the utility model provides a kind of Power supply for teaching, including for carrying out operation to input signal
Counter, the coding controller for encoding driving, the output controller cut-off for control circuit and for generating difference
The transformer of output voltage encodes winding；
The counter includes input interface, input collating circuit, the first counting chip, the second counting chip and clock electricity
Road；
The coding controller includes the first driving chip and the second driving chip；
The input interface, first counting chip, second counting chip and the clock circuit respectively with institute
Input collating circuit is stated to be connected；
First driving chip is connected with first counting chip, second driving chip and second meter
Number chip is connected；
First driving chip and second driving chip are connected with the output controller, and the output is adjusted
Section device is connected with transformer coding winding；
First counting chip and second counting chip cooperate, and for carrying out operation to input signal, obtain
To operation result；
First driving chip and second driving chip cooperate, for encoding to the operation result
Driving；
The output controller is used to receive the driving signal that the coding controller generates, and according to the driving signal
Control output circuit is cut-off；
The transformer coding winding is used to form difference according to each coding winding of the output controller output signal
Connection type, it is corresponding to generate corresponding output voltage.
Further, in Power supply for teaching described above, the counter further include:
Zero-bit limiting circuit is connected with first counting chip and the second counting chip respectively；
Limiting circuit is overflowed, is connected respectively with first counting chip and the second counting chip.
Further, in Power supply for teaching described above, the transformer encodes winding at least two.
Further, in Power supply for teaching described above, the output controller includes encoding winding with the transformer
The relay of same number, the relay input terminal are connected with first driving chip or second driving chip,
The output end of the relay is connected with corresponding transformer coding winding.
Further, Power supply for teaching described above, further includes:
The detection circuit being connected with the relay, for being examined to load current in integrated circuit and output voltage
It surveys；
Lock-in circuit is protected, the protection lock-in circuit is connected with the detection circuit.
Further, Power supply for teaching described above, further includes:
The reset circuit and police instruction circuit being connected with the detection circuit.
Further, Power supply for teaching described above, further includes:
Power switch is connected with transformer coding winding；
Exchange resets terminal, is connected with the counter；
Overload light is connected with the police instruction circuit.
The Power supply for teaching of the utility model, using the counter technique of modern digital circuits, and by counting circuit to defeated
Enter signal and carry out operation, operation result is received by encoding control circuit and carried out coding driving, then defeated by coding drive control
Conditioner operation out, and then control the transformer coding winding connection being connected with output controller and generate corresponding output electricity
Pressure, therefore the transformer with any shape iron core can be used, it is relatively simple for structure, it is of less demanding to production equipment, it is not required to
To use annular iron core transformer that can complete Power supply for teaching exchange pure sine wave output voltage step-less adjustment, it is easy to produce.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the Power supply for teaching embodiment of the utility model；
Fig. 2 is the circuit diagram of Power supply for teaching in Fig. 1.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
Fig. 1 is the structural schematic diagram of the Power supply for teaching embodiment of the utility model, and Fig. 2 is the circuit of Power supply for teaching in Fig. 1
Schematic diagram.As Figure 1-Figure 2, the Power supply for teaching of the present embodiment include for input signal carry out operation counter 101,
For encoding the coding controller 102 of driving, the output controller 103 cut-off for control circuit and for generating different outputs
The transformer of voltage encodes winding 104.
In the present embodiment, counter 101 as shown in Figure 1 may include addition input, subtraction input, clock signal, boosting
Counting chip and decompression 5 units of counting chip, physical circuit connection relationship are as shown in Figure 2.
Specifically, as shown in Fig. 2, counter 101 include input interface JP1, be made of U1C, U1D, R10, R12 it is defeated
Enter collating circuit, the first counting chip U3 (boosting counting chip), the second counting chip U4 (decompression counting chip) and by U1A,
U1B, R6 connect the clock circuit of composition with R7.Coding controller 102 includes the first driving chip U2 and the second driving chip U5.
In the present embodiment, input interface JP1, the first counting chip U3, the second counting chip U4 and clock circuit are proofreaded with input respectively
Circuit is connected；First driving chip U3 is connected with the first counting chip, the second driving chip U4 and the second counting chip phase
Connection, output controller 103 is connected with the first driving chip U3 and the second driving chip U4, transformer encode winding 104 and
Output controller 103 is correspondingly connected with.
During a specific implementation, the first counting chip U3 and the second counting chip U4 cooperate, for defeated
Enter signal and carry out operation, obtains operation result；First driving chip U2 and the second driving chip U5 cooperates, for fortune
It calculates result and carries out coding driving.Output controller 103 is used to receive the driving signal of the generation of coding controller 102, and according to this
Signal control output circuit is cut-off；Transformer encodes winding 104 and is used for according to each coding winding of output controller output signal
Different connection types is formed, it is corresponding to generate corresponding output voltage.
Optionally, transformer encodes winding 104 at least two.
Optionally, output controller 103 includes the relay with transformer coding 104 same number of winding, and relay is defeated
Enter end to be connected with the first driving chip U2 or the second driving chip U5, the output end of relay and corresponding transformer are compiled
Code winding 104 is connected.
Specifically, the front end input interface JP1 is the soft-touch type regulation button that output voltage rises or falls, and R5 is work
Indicate that power supply circuit, W1 are clock frequency set, in the present embodiment, by R3, R11 and R4, R8 respectively will plus, subtract counting letter
Number being sent into the first counting chip U3, the second counting chip U4 carries out addition, subtraction operation, coding, obtains and is re-fed into the after correct result
One driving chip U2, the second driving chip U5 array drive circuit carry out coding driving, then by relay (JK1, JK2, JK3,
JK4, JK5, JK6 ...) connection each corresponding absolute coding winding of transformer, make each corresponding coding winding can be with counter
Plus (raisings), subtract the regular series and parallel of (reductions) progress, because the output voltage of each absolute coding winding of transformer is corresponding
Especially set in counter, thus the ascending, descending of output voltage can with counter plus, subtract and change, to reach output electricity
The step-less adjustment of pressure.
The Power supply for teaching of the present embodiment believes input using the counter technique of modern digital circuits, and by counter
Number operation is carried out, operation result is received by coding controller and carried out coding driving, then exports by coding driving signal control
Conditioner operation, and then control the transformer coding winding connection being connected with output controller and generate corresponding output electricity
Pressure, therefore the transformer with any shape iron core can be used, it is relatively simple for structure, it is of less demanding to production equipment, it is not required to
To use annular iron core transformer that can complete Power supply for teaching exchange pure sine wave output voltage step-less adjustment, it is easy to produce.
As shown in Figure 1, counter 101 can also include overflowing limitation and zero-bit limitation in the Power supply for teaching of the present embodiment
Two units, physical circuit connection relationship are as shown in Figure 2.Specifically, as shown in Fig. 2, counter 101 can also include by R9,
The zero-bit limiting circuit of Q1 composition and the spilling limiting circuit being made of R9, Q1 R17, R18, Q2, zero-bit limiting circuit difference
It is connected with the first counting chip U3 and the second counting chip U4；Overflow limiting circuit respectively with the first counting chip U3 and second
Counting chip U4 is connected.
As shown in Figure 1, the Power supply for teaching of the present embodiment can also include that current detecting, voltage monitoring and protection locking etc. are single
Member, physical circuit connection relationship are as shown in Figure 2.Specifically, as shown in Fig. 2, the power supply of the present embodiment can also include by L1,
The detection circuit of LK1 composition and the protection lock-in circuit being made of D8, JK, Q3, R20, R21, R15, C6.Detection circuit with after
Electric appliance is connected, and protection lock-in circuit is connected with detection circuit.Detection circuit is used for load current in integrated circuit and defeated
Voltage is detected out；Protection lock-in circuit is for protecting Power supply for teaching.
Optionally, as shown in Figure 1, the Power supply for teaching of the present embodiment can also include input insurance, power supply output, load end
The units such as mouth and control circuit.
Optionally, as shown in Fig. 2, the Power supply for teaching of the present embodiment further includes the reset circuit being made of K1 and by R14, D3
The police instruction circuit of composition.Reset circuit and police instruction circuit are connected with detection circuit respectively.
During a specific implementation, the Power supply for teaching of the present embodiment further includes power switch, exchange clearing terminal (figure
In no longer show) and overload light (no longer being shown in figure).Wherein, power switch is connected with transformer coding winding；It hands over
Stream resets terminal and is connected with counter；Overload light is connected with police instruction circuit.
Optionally, it AC sine wave step-less adjustment can will be exported and related skill all the way when the Power supply for teaching of the present embodiment uses
The output combination of two-way direct current pressure stabilizing present in art constitutes multi-functional AC and DC step-less adjustment Power supply for teaching, can be realized three
Two-way direct current voltage stabilization output can also be used in series by the function of independent current source, any to adjust three road output voltages.
Optionally, two-way direct current pressure stabilizing output, which is adjusted, uses multiple circles rotational potentiometer fine adjustment.
Optionally, the output of AC sine wave step-less adjustment realizes that sine wave AC out-put supply is adjusted using touch key.
Optionally, soft-touch type operation adjusts or presses step-by-step adjustment for continuous automatic count.
Power supply for teaching electric property:
Two-way direct current pressure stabilizing output:
I tunnel of voltage rating: 0V~12V step-less adjustment；
II tunnel of voltage rating: 0V~12V step-less adjustment；
I tunnel of DC voltage-stabilizing, the output of II tunnel independence or can be used in series；
Rated current: I tunnel is equal to II tunnel and is more than or equal to 1.5A；
Voltage stability: it is not more than 2%U mark+0.1V；
Load stability: it is not more than 2%U mark+0.1V；
Ripple voltage: it is marked no more than 0.1%U；
Overload protection: two-way (1.05~1.2) × 1.5A independent protective；Short-circuit self-test, it is automatic to restore；
Exchange output:
Voltage rating: 0V~15V step-less adjustment, 50Hz sine wave；
Unloaded adjustable range: 0V~15V × (1.1~1.2)；
Fully loaded output voltage: 0V~15V × 0.95-0.3V；
Rated current: 3A；
Overload protection: (1.05~1.1) × rated current automatic protection；
Operating condition:
Environment temperature: 0~+40 DEG C；
Relative humidity: less than is equal to 90% (40 DEG C)；
Supply voltage: 198V~242V, 50HZ ± 2.5HZ.
The output of AC sine wave step-less adjustment is mutually indepedent with two-way direct current voltage stabilization output all the way for Power supply for teaching, can three
Road exports, is independent of each other simultaneously, and each road output has respective function displaying voltage.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to the same or similar content in other embodiments.
It should be noted that term " first ", " second " etc. are used for description purposes only in the description of the present invention,
It is not understood to indicate or imply relative importance.In addition, in the description of the present invention, unless otherwise indicated, it is " more
It is a " meaning refer at least two.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Stating may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiment or examples.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (7)
1. a kind of Power supply for teaching, which is characterized in that including for input signal carry out operation counter, for encode driving
Coding controller, the output controller that cut-offs for control circuit and transformer coding for generating different output voltages around
Group；
The counter includes input interface, input collating circuit, the first counting chip, the second counting chip and clock circuit；
The coding controller includes the first driving chip and the second driving chip；
The input interface, first counting chip, second counting chip and the clock circuit respectively with it is described defeated
Enter collating circuit to be connected；
First driving chip is connected with first counting chip, and second driving chip and described second counts core
Piece is connected；
First driving chip and second driving chip are connected with the output controller, the output controller
It is connected with transformer coding winding；
First counting chip and second counting chip cooperate, and for carrying out operation to input signal, are transported
Calculate result；
First driving chip and second driving chip cooperate, for carrying out coding drive to the operation result
It is dynamic；
The output controller is used to receive the driving signal that the coding controller generates, and is controlled according to the driving signal
Output circuit is cut-off；
The transformer coding winding is used to form different companies according to each coding winding of the output controller output signal
Mode is connect, it is corresponding to generate corresponding output voltage.
2. Power supply for teaching according to claim 1, which is characterized in that the counter further include:
Zero-bit limiting circuit is connected with first counting chip and the second counting chip respectively；
Limiting circuit is overflowed, is connected respectively with first counting chip and the second counting chip.
3. Power supply for teaching according to claim 1, which is characterized in that the transformer encodes winding at least two.
4. Power supply for teaching according to claim 1, which is characterized in that the output controller includes compiling with the transformer
The relay of code winding same number, the relay input terminal and first driving chip or the second driving chip phase
Connection, the output end of the relay are connected with corresponding transformer coding winding.
5. Power supply for teaching according to claim 4, which is characterized in that further include:
The detection circuit being connected with the relay, for being detected to load current in integrated circuit and output voltage；
Lock-in circuit is protected, the protection lock-in circuit is connected with the detection circuit.
6. Power supply for teaching according to claim 5, which is characterized in that further include:
The reset circuit and police instruction circuit being connected with the detection circuit.
7. Power supply for teaching according to claim 6, which is characterized in that further include:
Power switch is connected with transformer coding winding；
Exchange resets terminal, is connected with the counter；
Overload light is connected with the police instruction circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821320386.4U CN208548825U (en) | 2018-08-15 | 2018-08-15 | Power supply for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821320386.4U CN208548825U (en) | 2018-08-15 | 2018-08-15 | Power supply for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208548825U true CN208548825U (en) | 2019-02-26 |
Family
ID=65426290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821320386.4U Active CN208548825U (en) | 2018-08-15 | 2018-08-15 | Power supply for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208548825U (en) |
-
2018
- 2018-08-15 CN CN201821320386.4U patent/CN208548825U/en active Active
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