CN207559854U - The anti-reverse power circuit of line inspection instrument - Google Patents
The anti-reverse power circuit of line inspection instrument Download PDFInfo
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- CN207559854U CN207559854U CN201721850163.4U CN201721850163U CN207559854U CN 207559854 U CN207559854 U CN 207559854U CN 201721850163 U CN201721850163 U CN 201721850163U CN 207559854 U CN207559854 U CN 207559854U
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- line inspection
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Abstract
The utility model discloses a kind of anti-reverse power circuits of line inspection instrument, including bridge rectifier, current-limiting circuit and regulator circuit, the first input end of the bridge rectifier and the power supply positive input terminal of line inspection instrument connect, second input terminal of the bridge rectifier and the power supply negative input end of line inspection instrument connect, the negative output terminal ground connection of the bridge rectifier, the positive output end of the bridge rectifier is connect respectively with current-limiting circuit and the first power end loaded, the output terminal of the current-limiting circuit and the input terminal of regulator circuit connect, power end of the regulator circuit also respectively with the second load and third load is electrically connected.The power input reversal connection of line inspection instrument is solved the problems, such as in the utility model using bridge rectifier so that the power input of line inspection instrument connects in any case, and line inspection instrument can work normally.
Description
Technical field
The utility model is related to line inspection instrument equipment technical field, more particularly to a kind of line inspection instrument anti-reverse power supply electricity
Road.
Background technology
At present, the equipment of communication base station Zhong Duojia equipment operator and power circuit mix, in installation for measuring
During the branch measuring equipment of the equipment electricity consumption of each equipment operator, a very important job is exactly to each equipment operator
The supply line of equipment cleared up.In actual installation branch measuring equipment, operating personnel are generally fed back in the presence of scene electricity
Source wiring is chaotic, is not easy to recognize, the problems such as harness is uncertain, thus leads to that equipment installation speed is slow, error rate is high.For
This, generally use line inspection instrument clears up harness, searches the harness organizational form of equipment operator.But line inspection instrument works
When may from scene DC power supply obtain electric energy, due to line walking work great work intensity so that operating personnel are easy to
The power supply of line inspection instrument is reversed, so as to influence the normal work of line inspection instrument or even line inspection instrument can be damaged.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of line inspection instrument anti-reverse power supply electricity
Road so that line inspection instrument remains to work normally in power input reversal connection.
The purpose of this utility model is achieved through the following technical solutions：The anti-reverse power circuit of line inspection instrument, packet
Include bridge rectifier, current-limiting circuit and regulator circuit, the first input end of the bridge rectifier and the power supply of line inspection instrument
Positive input terminal connects, and the second input terminal of the bridge rectifier and the power supply negative input end of line inspection instrument connect, the bridge-type
The negative output terminal ground connection of rectification circuit, the positive output end of the bridge rectifier respectively with current-limiting circuit and the first electricity loaded
Source connects, and the input terminal of the output terminal of the current-limiting circuit and regulator circuit connects, and the regulator circuit is also respectively with second
Load and the power end electrical connection of third load.
Preferably, the bridge rectifier includes the first diode, the second diode, third diode and the four or two pole
Pipe, the cathode docking of the cathode and the second diode of first diode forms the positive output end of bridge rectifier, described
The docking of the anode of third diode and the 4th diode forms the negative output terminal of bridge rectifier, the moon of the third diode
The anode of pole and the first diode connects and composes the first input end of bridge rectifier, the cathode of the 4th diode and the
The anode of two diodes connects and composes the second input terminal of bridge rectifier.
Preferably, the current-limiting circuit includes first resistor, second resistance, 3rd resistor, the 4th resistance, the first triode
With it is silicon-controlled, the 4th resistance is adjustable resistance, and the emitter of first triode is through first resistor and bridge rectifier electricity
The positive output end connection on road, the emitter of first triode successively after second resistance and 3rd resistor with the one or three pole
The base stage connection of pipe, the collector of first triode is through the 4th resistance eutral grounding, the silicon-controlled anode and second resistance
It is connected with the common point of 3rd resistor, the silicon-controlled minus earth, the adjusting of the silicon-controlled grid and the 4th resistance
End connection.
Preferably, the regulator circuit includes first order regulator circuit and second level regulator circuit, the second level voltage stabilizing
The input terminal of circuit is connected through first order regulator circuit and the output terminal of current-limiting circuit, the first order regulator circuit and second negative
The power end electrical connection of load, the second level regulator circuit are electrically connected with the power end that third loads.
Preferably, first regulator circuit includes the second triode, the 5th resistance, the 6th resistance, the 5th diode, the
Six diodes and the first capacitance, the 6th diode are zener diode, and the base stage of second triode is through the first capacitance
Ground connection, the emitter of second triode connect the power end of the second load, and the collector of second triode is through the 5th electricity
Resistance connect with the base stage of third diode, the 6th resistance and the 5th resistor coupled in parallel, the collector of the third diode and
Second resistance is connected with the common point of 3rd resistor, and the anode of the 5th diode is connect with the base stage of the second triode, and the five or two
The cathode of pole pipe is connect with silicon-controlled anode.
Preferably, second regulator circuit includes voltage stabilizing chip, the second capacitance, third capacitance, the 4th capacitance, the 5th electricity
Appearance, the 6th capacitance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance and inductance, the anode of second capacitance connect
The power end of two loads, the cathode ground connection of second capacitance, the third capacitance is in parallel with the second capacitance, the voltage stabilizing chip
Enable Pin connect the power end of the second load through the 7th resistance, the compensating end of the voltage stabilizing chip is successively by the 8th resistance and the
It is grounded after four capacitances, the simulation ground terminal and protection ground terminal of the voltage stabilizing chip are grounded, and the output terminal of the voltage stabilizing chip is through electricity
Sense connects the power end of third load, and the anode of the 5th capacitance connects the power end of third load, the cathode of the 5th capacitance
Ground connection, the 6th capacitance is in parallel with the 5th capacitance, the power end of a termination third load of the 9th resistance, and the described 9th
The other end of resistance connects through the tenth resistance eutral grounding, the feedback end of the voltage stabilizing chip and the common point of the 9th resistance and the tenth resistance
It connects.
Preferably, the line inspection instrument further includes first state indicating circuit, the first state with anti-reverse power circuit
Indicating circuit include the 7th diode and the 11st resistance, the 7th diode be light emitting diode, the 7th diode
Anode connect with the common point of second resistance and 3rd resistor, the cathode of the 7th diode through the 11st resistance with it is controllable
The anode connection of silicon.
Preferably, the line inspection instrument further includes the second condition indication circuit, second state with anti-reverse power circuit
Indicating circuit includes the 8th diode, the 9th diode, the tenth diode, the 11st diode, the 12nd resistance and the 13rd
Resistance, the 8th diode and the tenth diode are light emitting diode, and the cathode of the 8th diode is through the 12nd electricity
Resistance is connect with the power supply positive input terminal of line inspection instrument, and the anode of the 8th diode and the power supply negative input end of line inspection instrument connect,
The anode of 9th diode is connect with the cathode of the 8th diode, the cathode of the 9th diode and the 8th diode
Anode connects, and the anode of the tenth diode and the power supply positive input terminal of line inspection instrument connect, the cathode of the tenth diode
It is connected through the power supply negative input end of the 13rd resistance and line inspection instrument, the cathode of the 11st diode and the sun of the tenth diode
Pole connects, and the anode of the 11st diode is connect with the cathode of the tenth diode.
The beneficial effects of the utility model are：
（1）The power input reversal connection of line inspection instrument is solved the problems, such as in the utility model using bridge rectifier, is made
The power input for obtaining line inspection instrument connects in any case, and line inspection instrument can work normally；
（2）Current-limiting circuit is equipped in the utility model, is unlikely to short circuit when line inspection instrument internal circuit being avoided to fail to base station
It has an impact；
（3）Two-stage regulator circuit is equipped in the utility model, can effectively ensure that the stabilization of voltage in line inspection instrument；
（4）First state indicating circuit and the second condition indication circuit, first state instruction electricity are equipped in the utility model
Road can intuitively show whether current-limiting circuit starts current limliting, the second condition indication circuit can straight line display whether reversal connection.
Description of the drawings
Fig. 1 is the circuit block diagram of the utility model；
Fig. 2 is the circuit diagram of one embodiment of the utility model.
Specific embodiment
Below in conjunction with embodiment, the technical solution of the utility model is clearly and completely described, it is clear that retouched
The embodiment stated is only the utility model part of the embodiment, instead of all the embodiments.Based in the utility model
Embodiment, those skilled in the art's all other embodiments obtained under the premise of not making the creative labor, all belongs to
In the range of the utility model protection.
Refering to Fig. 1-2, a kind of line inspection instrument is present embodiments provided with anti-reverse power circuit：
As shown in Figure 1, line inspection instrument includes bridge rectifier, current-limiting circuit and regulator circuit with anti-reverse power circuit,
The first input end of the bridge rectifier and the power supply positive input terminal of line inspection instrument connect, and the second of the bridge rectifier
The power supply negative input end of input terminal and line inspection instrument connects, the negative output terminal ground connection of the bridge rectifier, the bridge rectifier
The positive output end of circuit is connect respectively with current-limiting circuit and the first power end loaded, the output terminal of the current-limiting circuit and voltage stabilizing
The input terminal connection of circuit, power end of the regulator circuit also respectively with the second load and third load are electrically connected.
Reversal connection is solved the problems, such as by bridge rectifier in this implementation so that even if line inspection instrument remains to normally in reversal connection
Work；In addition, base station is had an impact to be unlikely to short circuit when line inspection instrument internal circuit being avoided to fail by setting current-limiting circuit.
In some embodiments, the regulator circuit includes first order regulator circuit and second level regulator circuit, and described the
The input terminal of two level regulator circuit is connected through first order regulator circuit and the output terminal of current-limiting circuit, the first order regulator circuit
It is electrically connected with the power end of the second load, the second level regulator circuit is electrically connected with the power end that third loads.
In some embodiments, the line inspection instrument further includes first state indicating circuit and second with anti-reverse power circuit
Condition indication circuit, the first state indicating circuit are connect with current-limiting circuit, and second condition indication circuit is respectively with patrolling
The power supply positive input terminal of line instrument is connected with power supply negative input end.
As shown in Fig. 2, the bridge rectifier includes the first diode D1, the second diode D2, third diode D3
With the 4th diode D4, the cathode docking of the cathode and the second diode D2 of the first diode D1 forms bridge rectifier
Positive output end, the anode docking of the third diode D3 and the 4th diode D4 forms the negative output of bridge rectifier
End, the cathode of the third diode D3 and the anode of the first diode D1 connect and compose the first input of bridge rectifier
End, the cathode of the 4th diode D4 and the anode of the second diode D2 connect and compose the second input of bridge rectifier
End.Preferably, the input power of the logging is 48V DC power supplies.
Second condition indication circuit includes the 8th diode D8, the 9th diode D9, the tenth diode D10, the tenth
One diode D11, the 12nd resistance R12 and the 13rd resistance R13, the 8th diode D8 and the tenth diode D10 are
Light emitting diode, the cathode of the 8th diode D8 are connected through the power supply positive input terminal of the 12nd resistance R12 and line inspection instrument, institute
The power supply negative input end of anode and line inspection instrument for stating the 8th diode D8 connects, the anode and the eight or two of the 9th diode D9
The cathode connection of pole pipe D8, the cathode of the 9th diode D9 are connect with the anode of the 8th diode D8, the 12nd pole
The anode of pipe D10 and the power supply positive input terminal of line inspection instrument connect, and the cathode of the tenth diode D10 is through the 13rd resistance R13
It is connect with the power supply negative input end of line inspection instrument, the cathode of the 11st diode D11 and the anode of the tenth diode D10 connect
It connects, the anode of the 11st diode D11 is connect with the cathode of the tenth diode D10.When line inspection instrument just connects, the tenth diode
D10 shines, and the 8th diode D8 extinguishes；During line inspection instrument reversal connection, the 8th diode D8 shines, and the tenth diode D10 extinguishes；So as to
Can easily and intuitively understand line inspection instrument whether reversal connection.
The current-limiting circuit includes first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the one or three pole
Pipe Q1 and silicon-controlled Q2, the 4th resistance R4 are adjustable resistance, and the emitter of the first triode Q1 is through first resistor R1
It is connect with the positive output end of bridge rectifier, the emitter of the first triode Q1 passes through second resistance R2 and third successively
Base stage after resistance R3 with the first triode Q is connect, and the collector of the first triode Q1 is grounded through the 4th resistance R4, described
The anode of silicon-controlled Q2 is connect with the common point of second resistance R2 and 3rd resistor R3, the minus earth of the silicon-controlled Q2, institute
The grid for stating silicon-controlled Q2 is connect with the adjustable side of the 4th resistance R4.Preferably, the first triode Q1 is three pole of positive-negative-positive
Pipe.
The first state indicating circuit includes the 7th diode D7 and the 11st resistance R11, the 7th diode D7
For light emitting diode, the anode of the 7th diode D7 is connect with the common point of second resistance R2 and 3rd resistor R3, described
The cathode of 7th diode D7 is connect through the 11st resistance R11 with the anode of silicon-controlled Q2.
First regulator circuit include the second triode T1, the 5th resistance R5, the 6th resistance R6, the 5th diode D5,
6th diode D6 and the first capacitance C1, the 6th diode D6 be zener diode, the base stage of the second triode T1
It is grounded through the first capacitance C1, the emitter of the second triode T1 meets the power end of the second load, the second triode T1
Collector connect through the 5th resistance R5 with the base stage of the second triode T1, the 6th resistance R6 is in parallel with the 5th resistance R5,
The collector of the second triode T1 is connect with the common point of second resistance R2 and 3rd resistor R3, the sun of the 5th diode D5
Pole is connect with the base stage of the second triode T1, and the cathode of the 5th diode D5 is connect with the anode of silicon-controlled Q2.Preferably, it is described
The model BD237 of second triode T1.
Second regulator circuit includes voltage stabilizing chip U1, the second capacitance C2, third capacitance C3, the 4th capacitance C4, the 5th
Capacitance C5, the 6th capacitance C6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10 and inductance L, described
The anode of two capacitance C2 connects the power end of the second load, the cathode ground connection of the second capacitance C2, the third capacitance C3 and the
Two capacitance C2 are in parallel, and the Enable Pin of the voltage stabilizing chip U1 connects the power end of the second load, the voltage stabilizing core through the 7th resistance R7
The compensating end of piece U1 is grounded after the 8th resistance R8 and the 4th capacitance C4 successively, the simulation ground terminal of the voltage stabilizing chip U1 and guarantor
Shield ground terminal is grounded, and the output terminal of the voltage stabilizing chip U1 connects the power end of third load through inductance L, the 5th capacitance C5's
Anode connects the power end of third load, and the cathode ground connection of the 5th capacitance C5, the 6th capacitance C6 and the 5th capacitance C5 is simultaneously
Connection, the power end of a termination third load of the 9th resistance R9, the other end of the 9th resistance R9 is through the tenth resistance R10
Ground connection, the feedback end of the voltage stabilizing chip U1 are connect with the common point of the 9th resistance R9 and the tenth resistance R10.Preferably, it is described
The model AOZ1016 of voltage stabilizing chip U1.
The operation principle of the present embodiment is：When initial, the first triode Q1 and silicon-controlled Q2 are turned off, at first resistor R1
When voltage increases, the first triode Q1 conductings, then so that silicon-controlled Q2 is connected, so as to play the role of current-limiting protection.
The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein
Disclosed form is not to be taken as the exclusion to other embodiment, and available for other combinations, modifications, and environments, and
Can be in contemplated scope described herein, modifications can be made through the above teachings or related fields of technology or knowledge.And this field
The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all should be in right appended by the utility model
It is required that protection domain in.
Claims (8)
1. the anti-reverse power circuit of line inspection instrument, which is characterized in that including bridge rectifier, current-limiting circuit and regulator circuit,
The first input end of the bridge rectifier and the power supply positive input terminal of line inspection instrument connect, and the second of the bridge rectifier
The power supply negative input end of input terminal and line inspection instrument connects, the negative output terminal ground connection of the bridge rectifier, the bridge rectifier
The positive output end of circuit is connect respectively with current-limiting circuit and the first power end loaded, the output terminal of the current-limiting circuit and voltage stabilizing
The input terminal connection of circuit, power end of the regulator circuit also respectively with the second load and third load are electrically connected.
2. the anti-reverse power circuit of line inspection instrument according to claim 1, which is characterized in that the bridge rectifier packet
Include the first diode, the second diode, third diode and the 4th diode, the cathode of first diode and the two or two pole
The cathode docking of pipe forms the anode docking structure of the positive output end of bridge rectifier, the third diode and the 4th diode
Into the negative output terminal of bridge rectifier, it is whole that the cathode of the third diode and the anode of the first diode connect and compose bridge-type
The first input end of current circuit, the cathode of the 4th diode and the anode of the second diode connect and compose bridge rectifier
The second input terminal.
3. the anti-reverse power circuit of line inspection instrument according to claim 1, which is characterized in that the current-limiting circuit includes the
One resistance, second resistance, 3rd resistor, the 4th resistance, the first triode and silicon-controlled, the 4th resistance are adjustable resistance,
The emitter of first triode is connected through the positive output end of first resistor and bridge rectifier, first triode
Base stage of the emitter successively with the first triode after second resistance and 3rd resistor is connect, the current collection of first triode
The 4th resistance eutral grounding of pole, the silicon-controlled anode is connect with the common point of second resistance and 3rd resistor, described silicon-controlled
Minus earth, the silicon-controlled grid connect with the adjustable side of the 4th resistance.
4. the anti-reverse power circuit of line inspection instrument according to claim 3, which is characterized in that the regulator circuit includes the
Level-one regulator circuit and second level regulator circuit, the input terminal of the second level regulator circuit is through first order regulator circuit and current limliting
The output terminal connection of circuit, the first order regulator circuit are electrically connected with the power end of the second load, the second level voltage stabilizing electricity
Road is electrically connected with the power end that third loads.
5. the anti-reverse power circuit of line inspection instrument according to claim 4, which is characterized in that the first order regulator circuit
Including the second triode, the 5th resistance, the 6th resistance, the 5th diode, the 6th diode and the first capacitance, the six or two pole
It manages as zener diode, for the base stage of second triode through the first capacity earth, the emitter of second triode connects
The power ends of two loads, the collector of second triode connect through the 5th resistance with the base stage of third diode, and described the
Six resistance and the 5th resistor coupled in parallel, the collector of the third diode are connect with the common point of second resistance and 3rd resistor,
The anode of 5th diode is connect with the base stage of the second triode, and the cathode of the 5th diode is connect with silicon-controlled anode.
6. the anti-reverse power circuit of line inspection instrument according to claim 4, which is characterized in that the second level regulator circuit
Including voltage stabilizing chip, the second capacitance, third capacitance, the 4th capacitance, the 5th capacitance, the 6th capacitance, the 7th resistance, the 8th resistance,
9th resistance, the tenth resistance and inductance, the anode of second capacitance connect the power end of the second load, and second capacitance is born
Pole is grounded, and the third capacitance is in parallel with the second capacitance, and the Enable Pin of the voltage stabilizing chip connects the second load through the 7th resistance
Power end, the compensating end of the voltage stabilizing chip are grounded after the 8th resistance and the 4th capacitance successively, the mould of the voltage stabilizing chip
To intend ground terminal and protection ground terminal is grounded, the output terminal of the voltage stabilizing chip connects the power end of third load through inductance, and the described 5th
The anode of capacitance connects the power end of third load, and the cathode ground connection of the 5th capacitance, the 6th capacitance and the 5th capacitance are simultaneously
Connection, the power end of a termination third load of the 9th resistance, the other end of the 9th resistance is through the tenth resistance eutral grounding, institute
The feedback end for stating voltage stabilizing chip is connect with the common point of the 9th resistance and the tenth resistance.
7. the anti-reverse power circuit of line inspection instrument according to claim 3, which is characterized in that the line inspection instrument is with anti-reverse
Power circuit further includes first state indicating circuit, and the first state indicating circuit includes the 7th diode and the 11st electricity
Resistance, the 7th diode are light emitting diode, the anode of the 7th diode and second resistance and 3rd resistor it is public
Point connection, the cathode of the 7th diode are connect through the 11st resistance with silicon-controlled anode.
8. the anti-reverse power circuit of line inspection instrument according to claim 1, which is characterized in that the line inspection instrument is with anti-reverse
Power circuit further includes the second condition indication circuit, second condition indication circuit include the 8th diode, the 9th diode,
Tenth diode, the 11st diode, the 12nd resistance and the 13rd resistance, the 8th diode and the tenth diode are
Light emitting diode, the cathode of the 8th diode are connected through the power supply positive input terminal of the 12nd resistance and line inspection instrument, and described the
The anode of eight diodes and the power supply negative input end of line inspection instrument connect, the anode of the 9th diode and the moon of the 8th diode
Pole connects, and the cathode of the 9th diode is connect with the anode of the 8th diode, the anode and line walking of the tenth diode
The power supply positive input terminal connection of instrument, the cathode of the tenth diode connect through the power supply negative input end of the 13rd resistance and line inspection instrument
It connects, the cathode of the 11st diode is connect with the anode of the tenth diode, the anode and the tenth of the 11st diode
The cathode connection of diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721850163.4U CN207559854U (en) | 2017-12-26 | 2017-12-26 | The anti-reverse power circuit of line inspection instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721850163.4U CN207559854U (en) | 2017-12-26 | 2017-12-26 | The anti-reverse power circuit of line inspection instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207559854U true CN207559854U (en) | 2018-06-29 |
Family
ID=62661143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721850163.4U Expired - Fee Related CN207559854U (en) | 2017-12-26 | 2017-12-26 | The anti-reverse power circuit of line inspection instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207559854U (en) |
-
2017
- 2017-12-26 CN CN201721850163.4U patent/CN207559854U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200305 Address after: 526000 Decheng industrial intensive base, Deqing County, Zhaoqing City, Guangdong Province Patentee after: Guangdong Deqing Electric Meter Manufacturing Co.,Ltd. Address before: 610000 Sichuan Chengdu Pixian Chengdu modern industrial port north area Hong Kong Tong North 3 Road No. 523 Patentee before: SICHUAN YONGSHENG AVIATION POWER SUPPLY CO.,LTD. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 Termination date: 20211226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |