CN109994986A - A kind of system load is from cut-off circuit - Google Patents
A kind of system load is from cut-off circuit Download PDFInfo
- Publication number
- CN109994986A CN109994986A CN201711468333.7A CN201711468333A CN109994986A CN 109994986 A CN109994986 A CN 109994986A CN 201711468333 A CN201711468333 A CN 201711468333A CN 109994986 A CN109994986 A CN 109994986A
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- circuit
- oxide
- semiconductor
- metal
- power supply
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- 239000004065 semiconductor Substances 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/06—Arrangements for supplying operative power
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Abstract
The present invention relates to a kind of system loads from cut-off circuit, for in breaker of plastic casing controller system, the circuit includes extraneous accessory power supply terminal, triode, metal-oxide-semiconductor and communication chip, the base stage of the triode is connect with extraneous accessory power supply terminal, emitter ground connection, the connection of the grid of collector and metal-oxide-semiconductor, the source electrode of the metal-oxide-semiconductor connect to power supply, and drain electrode is connect with the power pins of communication chip.Compared with prior art, the present invention has many advantages, such as intelligence, low-power consumption, reliable and stable.
Description
Technical field
It lowers consumption field the present invention relates to low-voltage electrical apparatus, more particularly, to a kind of system load from cut-off circuit.
Background technique
Specific function, such as communication, remote control etc. are had there are many equipment in present low-voltage electrical apparatus, often may require that and connect
Enter accessory power supply.But when equipment does not need communication, and system accessory power supply does not access, due to depositing for these additional functions
Also it will increase the power consumption of system, and then influence the normal work of other equipment.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of system loads to autotomy
Except circuit.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of system load is from cut-off circuit, in breaker of plastic casing controller system, which to include extraneous auxiliary
Power supply terminal, triode, metal-oxide-semiconductor and communication chip, the base stage of the triode connect with extraneous accessory power supply terminal, emit
The grid of pole ground connection, collector and metal-oxide-semiconductor connects, and the source electrode of the metal-oxide-semiconductor connects to power supply, the electricity of drain electrode and communication chip
Source pin connection.
Preferably, which further includes the first current-limiting resistance and the second current-limiting resistance, the extraneous accessory power supply terminal
It is connected by the base stage of the first current-limiting resistance and triode, the base stage of the triode is grounded by the second current-limiting resistance.
Preferably, first resistor is equipped between the grid and source electrode of the metal-oxide-semiconductor.
Preferably, the power pins of the communication chip are also grounded by filter capacitor.
Preferably, the communication chip is RS485 communication chip.
Preferably, the metal-oxide-semiconductor is P-channel metal-oxide-semiconductor.
Compared with prior art, the invention has the following advantages that
Load of the invention is more intelligent from cut-off circuit, and the automatic excision model of load of equipment is to adapt to different works
Operation mode can also be adjusted, Bu Huiying even if equipment is not on the miscellaneous functions such as communication, long-range by the circuit of itself
Ring the power consumption and work for arriving whole equipment.
Detailed description of the invention
Fig. 1 is this electricity road schematic diagram.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
The present invention provides a kind of load for breaker of plastic casing controller system from cut-off circuit, which includes the external world
Accessory power supply terminal J1, triode Q4, P-channel metal-oxide-semiconductor Q5 and communication chip U2, the base stage of triode Q4 and extraneous accessory power supply
Terminal J1 connection, emitter ground connection, collector are connect with the grid of metal-oxide-semiconductor Q5, and the source electrode of metal-oxide-semiconductor Q5 is connect with power supply VCC, leakage
Pole is connect with the power pins of communication chip U2, and first resistor R84 is equipped between the grid and source electrode of metal-oxide-semiconductor Q5.
The circuit further includes the first current-limiting resistance R82 and the second current-limiting resistance R83, and extraneous accessory power supply terminal J1 passes through the
One current-limiting resistance R82 is connect with the base stage of triode Q4, and the base stage of triode Q4 is grounded by the second current-limiting resistance R83.
Communication chip U2 uses RS485 communication chip, and power pins also pass through filter capacitor C1 and are grounded.
Working principle of the present invention is as follows:
When breaker of plastic casing controller system and the external world are not communicated, extraneous accessory power supply terminal J1 is without outside
Power input, then triode Q4 is not turned on, and the grid and source voltage of P-channel metal-oxide-semiconductor Q5 is VCC, then metal-oxide-semiconductor Q5 is not led
It is logical, at this time 8 feet of 485 communication chip U2 not it is electric, therefore do not work, do not interfere with the power consumption of entire controller, thus
Equipment work is not influenced.
When breaker of plastic casing controller system, which is in, to be communicated with the external world, 1 foot and 2 feet of extraneous accessory power supply terminal J1 it
Between have 12V accessory power supply input, 12V by the first current-limiting resistance R82 and the second current-limiting resistance R83 partial pressure after generate a level
It is output to the base stage of triode Q4, so that Q4 is connected, the grid of metal-oxide-semiconductor Q5 is connected to the ground as 0V at this time, then metal-oxide-semiconductor Q5 is connected,
The 8 foot voltages of communication chip U2 obtain electric at this time for VCC, then communication chip U2 can be worked normally, and equipment can be carried out normally with the external world
Communication.
C11 is the filter capacitor of communication chip power supply, and grid of the R84 when triode Q4 is not turned on for metal-oxide-semiconductor Q5 provides
One determining high level, prevents metal-oxide-semiconductor from misleading.
The present invention to whether external accessory power supply accesses by identifying, electricity of the driving metal-oxide-semiconductor circuit to communication chip
Source is automatically accessed and rupturing operation, in the case where being not necessarily to software and manual operation, reaches and reduces equipment overall power
Purpose keeps equipment stable and reliable in work.
The above is only a kind of embodiment of the invention, is not intended to limit the present invention in any form, all
It is any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention, still falls within
In the range of technical solution of the present invention.
Claims (6)
1. a kind of system load is from cut-off circuit, in breaker of plastic casing controller system, which is characterized in that the circuit includes
Extraneous accessory power supply terminal (J1), triode (Q4), metal-oxide-semiconductor (Q5) and communication chip (U2), the base of the triode (Q4)
Pole is connect with extraneous accessory power supply terminal (J1), and emitter ground connection, collector is connect with the grid of metal-oxide-semiconductor (Q5), the MOS
The source electrode of pipe (Q5) is connect with power supply (VCC), and drain electrode is connect with the power pins of communication chip (U2).
2. a kind of system load according to claim 1 is from cut-off circuit, which is characterized in that the circuit further includes the first limit
Leakage resistance (R82) and the second current-limiting resistance (R83), the extraneous accessory power supply terminal (J1) pass through the first current-limiting resistance
(R82) it is connect with the base stage of triode (Q4), the base stage of the triode (Q4) is grounded by the second current-limiting resistance (R83).
3. a kind of system load according to claim 1 is from cut-off circuit, which is characterized in that the metal-oxide-semiconductor (Q5)
First resistor (R84) is equipped between grid and source electrode.
4. a kind of system load according to claim 1 is from cut-off circuit, which is characterized in that the communication chip (U2)
Power pins also pass through filter capacitor (C1) ground connection.
5. a kind of system load according to claim 1 is from cut-off circuit, which is characterized in that the communication chip (U2)
For RS485 communication chip.
6. a kind of system load according to claim 1 is from cut-off circuit, which is characterized in that the metal-oxide-semiconductor (Q5) is P
Channel MOS tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711468333.7A CN109994986A (en) | 2017-12-29 | 2017-12-29 | A kind of system load is from cut-off circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711468333.7A CN109994986A (en) | 2017-12-29 | 2017-12-29 | A kind of system load is from cut-off circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109994986A true CN109994986A (en) | 2019-07-09 |
Family
ID=67109381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711468333.7A Pending CN109994986A (en) | 2017-12-29 | 2017-12-29 | A kind of system load is from cut-off circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109994986A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474402A (en) * | 2020-05-27 | 2020-07-31 | 华普电力有限公司 | High-voltage live detection device based on wireless communication |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202276144U (en) * | 2011-10-28 | 2012-06-13 | 中国移动通信集团广东有限公司 | Protective device of base station communication power supply and base station communication power supply |
| CN202798044U (en) * | 2012-07-19 | 2013-03-13 | 康佳集团股份有限公司 | Power control device |
| CN204179029U (en) * | 2014-10-31 | 2015-02-25 | 河北宝凯电气有限公司 | A kind of breaker of plastic casing with several functions |
| CN204290270U (en) * | 2014-11-15 | 2015-04-22 | 广东伊莱斯电机有限公司 | The quick down circuit of a kind of driver accessory power supply |
| CN204464946U (en) * | 2015-04-13 | 2015-07-08 | 安徽康佳绿色照明技术有限公司 | A kind of auxiliary power supply under-voltage protecting circuit |
| CN207765937U (en) * | 2017-12-29 | 2018-08-24 | 上海亿盟电气自动化技术有限公司 | A kind of system load is from cut-off circuit |
-
2017
- 2017-12-29 CN CN201711468333.7A patent/CN109994986A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202276144U (en) * | 2011-10-28 | 2012-06-13 | 中国移动通信集团广东有限公司 | Protective device of base station communication power supply and base station communication power supply |
| CN202798044U (en) * | 2012-07-19 | 2013-03-13 | 康佳集团股份有限公司 | Power control device |
| CN204179029U (en) * | 2014-10-31 | 2015-02-25 | 河北宝凯电气有限公司 | A kind of breaker of plastic casing with several functions |
| CN204290270U (en) * | 2014-11-15 | 2015-04-22 | 广东伊莱斯电机有限公司 | The quick down circuit of a kind of driver accessory power supply |
| CN204464946U (en) * | 2015-04-13 | 2015-07-08 | 安徽康佳绿色照明技术有限公司 | A kind of auxiliary power supply under-voltage protecting circuit |
| CN207765937U (en) * | 2017-12-29 | 2018-08-24 | 上海亿盟电气自动化技术有限公司 | A kind of system load is from cut-off circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474402A (en) * | 2020-05-27 | 2020-07-31 | 华普电力有限公司 | High-voltage live detection device based on wireless communication |
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