CN112186848A - Electric quantity release circuit of indicator lamp, power supply indicating circuit and electronic equipment - Google Patents
Electric quantity release circuit of indicator lamp, power supply indicating circuit and electronic equipment Download PDFInfo
- Publication number
- CN112186848A CN112186848A CN202011038275.6A CN202011038275A CN112186848A CN 112186848 A CN112186848 A CN 112186848A CN 202011038275 A CN202011038275 A CN 202011038275A CN 112186848 A CN112186848 A CN 112186848A
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- circuit
- energy storage
- indicator lamp
- voltage
- resistor
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- 238000004146 energy storage Methods 0.000 claims abstract description 100
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 38
- 230000002265 prevention Effects 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/322—Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock
Abstract
The invention discloses an indicating lamp electric quantity release circuit, a power supply indicating circuit and an electronic device, wherein the indicating lamp electric quantity release circuit is used for being connected with an indicating lamp, the indicating lamp is connected with a power supply, and the indicating lamp electric quantity release circuit comprises: the energy storage circuit, the voltage comparison circuit and the discharge circuit are connected in sequence; wherein the storage circuit receives a supply voltage for storage; the voltage comparison circuit receives the voltage of the energy storage circuit and the voltage of the indicator lamp for comparison, and when the voltage of the energy storage circuit is higher than the voltage of the indicator lamp, a driving signal is output to the discharge circuit; and the discharge circuit receives the driving signal to conduct, and the residual electric quantity of the indicator lamp is discharged. The invention stores the electric quantity in advance through the energy storage circuit, and when the power supply is powered off, the voltage comparison circuit outputs a driving signal according to the voltage of the energy storage circuit and the voltage of the indicating lamp to drive the discharging circuit to discharge the residual electric quantity of the indicating lamp.
Description
Technical Field
The invention relates to the field of standby power supply residual power release, in particular to an indicating lamp electric quantity release circuit, a power supply indicating circuit and electronic equipment.
Background
In the existing products such as televisions, displays, monitors, digital products or household appliances, the standby indicator lamp is turned on for a long time under the condition that the power supply is turned off after the products are in standby, and the standby indicator lamp is turned off after waiting for 5 to 10 seconds or even longer.
Under the condition, a user cannot judge whether the electric appliance is normally powered off or not after power failure, and sometimes the user can misjudge that the electric appliance is not powered off, so that the user experience is influenced or potential safety hazards are caused.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide an indicator lamp power release circuit, a power indicator circuit and an electronic device, wherein the power of the indicator lamp is stored in advance in an energy storage circuit, and when the device is powered off, a voltage comparison circuit outputs a driving signal according to the voltage of the energy storage circuit and the voltage of the indicator lamp to drive a discharge circuit to discharge the residual power of the indicator lamp.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an indicating lamp electric quantity release circuit, which is used for being connected with an indicating lamp, wherein the indicating lamp is connected with a power supply, and the indicating lamp electric quantity release circuit comprises: the energy storage circuit, the voltage comparison circuit and the discharge circuit are connected in sequence;
wherein the storage circuit receives a supply voltage for storage; the voltage comparison circuit receives the voltage of the energy storage circuit and the voltage of the indicator lamp for comparison, and when the voltage of the energy storage circuit is higher than the voltage of the indicator lamp, a driving signal is output to the discharge circuit; and the discharge circuit receives the driving signal to conduct, and the residual electric quantity of the indicator lamp is discharged.
The energy storage circuit comprises an energy storage capacitor used for receiving power supply voltage to store, one end of the energy storage capacitor is connected with the indicator lamp and the voltage comparison circuit, and the other end of the energy storage capacitor is grounded.
The energy storage circuit further comprises an anti-reverse circuit which is used for being connected between the energy storage capacitor and the power supply and between the energy storage capacitor and the indicator lamp to prevent current backflushing, the input end of the anti-reverse circuit is connected with the indicator lamp and the power supply, and the output end of the anti-reverse circuit is connected with one end of the energy storage capacitor and the voltage comparison circuit.
The energy storage circuit further comprises a current limiting circuit which is arranged between the anti-reverse circuit and the energy storage capacitor and used for current limiting protection, one end of the current limiting circuit is connected with the discharging circuit, and the other end of the current limiting circuit is connected with the energy storage capacitor.
The energy storage circuit comprises a first diode of an energy storage capacitor and a first resistor, the input end of the first diode is connected with the indicator lamp, the output end of the first diode is connected with one end of the first resistor, one end of the first resistor is connected with the energy storage capacitor and the voltage comparison circuit, and the other end of the energy storage capacitor is grounded.
The voltage comparison circuit comprises a second resistor and a first switch tube, one end of the second resistor is connected with the indicator lamp, the other end of the second resistor is connected with the control end of the first switch tube, the input end of the first switch tube is connected with the energy storage circuit, and the output end of the first switch tube is connected with the discharge circuit.
The discharge circuit includes offset resistor, second switch and discharge resistance, offset resistor's one end with voltage comparison circuit connects, offset resistor's the other end is connected with the control end of second switch, the input of second switch is connected with discharge resistance's one end, discharge resistance's the other end with the pilot lamp is connected, the output ground connection of second switch.
The discharge circuit further comprises a third resistor, one end of the third resistor is connected with one end of the bias resistor and the voltage comparison circuit, and the other end of the third resistor is grounded.
A power indicator circuit comprising a power source, an indicator light and an indicator light power release circuit as hereinbefore described;
the energy storage circuit, the voltage comparison circuit and the discharge circuit are sequentially connected, and the energy storage circuit, the voltage comparison circuit and the discharge circuit are also respectively connected with an indicator lamp and a power supply;
the power supply supplies power to the indicator lamp and the energy storage circuit, the indicator lamp electric quantity release circuit is connected with the indicator lamp and controls the voltage comparison circuit to output a driving signal to the discharge circuit when the voltage of the energy storage circuit is higher than that of the indicator lamp, and the discharge circuit discharges for the indicator lamp.
An electronic device comprises a device body, wherein a circuit board is arranged in the device body, and the circuit board is provided with a power supply indicating circuit.
Compared with the prior art, the indicating lamp electric quantity release circuit, the power supply indicating circuit and the electronic equipment provided by the invention have the advantages that the indicating lamp electric quantity release circuit is used for being connected with the indicating lamp, the indicating lamp is connected with the power supply, and the indicating lamp electric quantity release circuit comprises: the energy storage circuit, the voltage comparison circuit and the discharge circuit are connected in sequence; wherein the storage circuit receives a supply voltage for storage; the voltage comparison circuit receives the voltage of the energy storage circuit and the voltage of the indicator lamp for comparison, and when the voltage of the energy storage circuit is higher than the voltage of the indicator lamp, a driving signal is output to the discharge circuit; and the discharge circuit receives the driving signal to conduct, and the residual electric quantity of the indicator lamp is discharged. The invention stores the electric quantity in advance through the energy storage circuit, and when the power supply is powered off, the voltage comparison circuit outputs a driving signal according to the voltage of the energy storage circuit and the voltage of the indicating lamp to drive the discharging circuit to discharge the residual electric quantity of the indicating lamp.
Drawings
FIG. 1 is a block diagram of the power discharge circuit of the indicator light according to the present invention;
fig. 2 is a circuit diagram of the indicating lamp power discharge circuit provided by the present invention.
Detailed Description
The invention provides an indicating lamp electric quantity release circuit, a power supply indicating circuit and electronic equipment.
The embodiments of the present invention are intended to explain technical concepts of the present invention, technical problems to be solved, technical features constituting technical solutions, and technical effects to be brought about in more detail. The embodiments are explained below, but the scope of the present invention is not limited thereto. Further, the technical features of the embodiments described below may be combined with each other as long as they do not conflict with each other.
When power supply scheme pulls out the electricity under standby state at present, power indicator need several seconds or tens of seconds just can extinguish for the user can't judge after the outage whether the electrical apparatus normally shuts down, influences user experience, and some equipment has danger even, when the user misjudges the pilot lamp state, can cause the safety problem.
In view of the above problems in the prior art, referring to fig. 1 and fig. 2, the present invention provides an indicator lamp power releasing circuit for connecting with an indicator lamp 200, where the indicator lamp 200 is connected with a power supply 100, the indicator lamp power releasing circuit comprising: the energy storage circuit 300, the voltage comparison circuit 400 and the discharge circuit 500 are connected in sequence;
wherein the supply voltage is received by the tank circuit 300 for storage; the voltage comparison circuit 400 receives the voltage of the energy storage circuit 300 and the voltage of the indicator lamp 200 for comparison, and outputs a driving signal to the discharge circuit when the voltage of the energy storage circuit 300 is higher than the voltage of the indicator lamp; the discharge circuit 500 receives the driving signal to conduct, and discharges the residual electric quantity of the indicator lamp 200.
In specific implementation, in this embodiment, the indicator light power release circuit may be applied to any electronic product including the indicator light 200, so as to solve the problem that the indicator light is not turned off after power failure for a long time. Specifically, the power supply 100 supplies power to both the indicator lamp 200 and the indicator lamp power release circuit, VSB _ IN fig. 2 is the supply voltage input of the power supply 100, and VSB _ OUT IN fig. 2 is connected to the input of the indicator lamp 200 to supply power to the indicator lamp 200. When the electronic product is in an operating state, since the energy storage circuit 300 and the indicator lamp 200 are both powered by the power supply 100, the voltage of the indicator lamp 200 is greater than or equal to the voltage of the energy storage circuit 300 (i.e., the voltage at the point V2 shown in fig. 2 is greater than or equal to the voltage at the point V1), at this time, the output voltage of the voltage comparison circuit 400 is at a low level, and the discharge circuit 500 does not operate; when the electronic product is in standby or shutdown, the indicator lamp 200 is powered off, and at this time, since the energy storage circuit 300 is in a charging state for a long time, the voltage of the energy storage circuit 300 is necessarily greater than the voltage of the indicator lamp 200 (i.e., the voltage at the point V1 is greater than the voltage at the point V2 shown in fig. 2), at this time, the voltage comparison circuit 400 outputs a high level (driving signal) to the discharge circuit 500, and the discharge circuit 500 starts to discharge the residual capacity in the indicator lamp 200. In the embodiment, the energy storage circuit 300 stores the power of the indicator lamp in advance, and when the device is powered off, the voltage comparison circuit 400 outputs the driving signal according to the voltage of the energy storage circuit 300 and the voltage of the indicator lamp 200 to drive the discharge circuit 500 to discharge the residual power of the indicator lamp 200.
Optionally, referring to fig. 2, the energy storage circuit 300 includes an energy storage capacitor C1 for receiving the voltage of the power supply 100 for storage, one end of the energy storage capacitor C1 is connected to the indicator light 200 and the voltage comparison circuit 400, and the other end of the energy storage capacitor C1 is grounded. In this embodiment, the energy storage capacitor C1 is used to store the electric energy when the electronic product is in operation, so that the voltage comparison circuit 400 is controlled to drive the discharge circuit 500 to discharge the residual electric energy of the indicator light 200 when the electronic product is standby.
Optionally, with continued reference to fig. 2, the energy storage circuit 300 further includes a reverse prevention circuit 301 for preventing current reverse pulse connected between the energy storage capacitor C1 and the power supply 100 and the indicator light 200, an input end of the reverse prevention circuit 301 is connected to the indicator light 200 and the power supply 100, and an output end of the reverse prevention circuit 301 is connected to one end of the energy storage capacitor C1 and the voltage comparison circuit 400.
In specific implementation, in this embodiment, when the energy storage circuit 300 only includes the energy storage capacitor C1, and the voltage of the energy storage capacitor C1 is higher than that of the indicator light 200, the voltage of the energy storage circuit 300 is reversely output to the indicator light 200 and the power supply 100, and at this time, although the discharge circuit 500 can be turned on for discharging for a period of time, the discharge effect is not good; and may cause the discharge circuit 500 to be triggered by mistake when there is a voltage fluctuation in the power supply 100 or the indicator lamp 200. Therefore, the anti-reverse circuit 301 is arranged between the energy storage capacitor C1 and the power supply 100 and the indicator lamp 200 to prevent the voltage of the energy storage circuit 300 from being reversed, so that a stable discharging effect is achieved when the indicator lamp is powered off.
Specifically, referring to fig. 2, the anti-reverse circuit 301 includes a first diode, an input terminal of the first diode is connected to the power source 100 and the indicator light 200, and an output terminal of the first diode is connected to the energy storage capacitor C1 and the voltage comparison circuit 400.
Optionally, with continued reference to fig. 2, the energy storage circuit 300 further includes a current limiting circuit 302 disposed between the anti-reverse circuit 301 and the energy storage capacitor C1 for current limiting protection, one end of the current limiting circuit 302 is connected to the discharge circuit 500, and the other end of the current limiting circuit 302 is connected to the energy storage capacitor C1. In this embodiment, the current limiting circuit 302 is disposed between the anti-reverse circuit 301 and the energy storage capacitor C1, so as to prevent the device of the anti-reverse circuit 301 from being damaged due to excessive current during the charging process.
Specifically, the current limiting circuit 302 includes a first resistor R1, one end of the first resistor R1 is connected to the output terminal of the first diode, and the other end of the first resistor R1 is connected to the energy storage capacitor C1 and the voltage comparing circuit 400.
Referring to fig. 2, in a preferred embodiment, the energy storage circuit 300 includes an energy storage capacitor C1, a first diode and a first resistor R1, an input terminal of the first diode is connected to the indicator light 200, an output terminal of the first diode is connected to one terminal of the first resistor R1, one terminal of the first resistor R1 is connected to the energy storage capacitor C1 and the voltage comparison circuit 400, and the other terminal of the energy storage capacitor C1 is grounded.
Optionally, referring to fig. 2, the voltage comparison circuit 400 includes a first resistor R2 and a first switch Q1, one end of the first resistor R2 is connected to the indicator light 200, the other end of the first resistor R2 is connected to the control end of the first switch Q1, the input end of the first switch Q1 is connected to the energy storage circuit 300, and the output end of the first switch Q1 is connected to the discharge circuit 500.
In specific implementation, in this embodiment, the first switch Q1 is a PNP triode (or other switching devices capable of implementing the same function), the control terminal of the first switch Q1 is a base electrode of the PNP triode, the input terminal of the first switch Q1 is an emitter electrode of the PNP triode, and the output terminal of the first switch Q1 is a collector electrode of the PNP triode. The first resistor R2 realizes the functions of a bias resistor and a current-limiting resistor, when an electronic product enters a standby state or is shut down, the indicator lamp is powered off, the emitter voltage of the PNP triode is higher than the base voltage and exceeds a conduction threshold value, therefore, the PNP triode is conducted, outputs a high level to the discharge circuit 500, and controls the discharge circuit 500 to start discharging for the indicator lamp 200.
Optionally, with reference to fig. 2, the discharge circuit 500 includes a bias resistor R4, a second switch Q2, and a discharge resistor R5, one end of the bias resistor R4 is connected to the voltage comparison circuit 400, the other end of the bias resistor R4 is connected to a control end of the second switch Q2, an input end of the second switch Q2 is connected to one end of the discharge resistor R5, the other end of the discharge resistor R5 is connected to the indicator light 200, and an output end of the second switch Q2 is grounded.
In this embodiment, in a specific implementation, the second switch Q2 is an NPN transistor, the control terminal of the second switch Q2 is a base of the NPN transistor, the input terminal of the second switch Q2 is a collector of the NPN transistor, and the output terminal of the second switch Q2 is an emitter of the NPN transistor. The bias resistor R4 provides bias voltage for the base electrode of the NPN triode and realizes the current limiting function. The base of the NPN transistor is turned on after receiving the driving signal, and the residual power in the indicator lamp 200 is discharged to the ground through the discharge resistor R5.
It should be noted that, other switching devices may be selected for the first switch Q1 and the second switch Q2, as long as the corresponding functions in the present embodiment can be achieved.
Further, referring to fig. 2, the discharge circuit 500 further includes a third resistor R3, one end of the third resistor R3 is connected to one end of the bias resistor and the voltage comparison circuit 400, and the other end of the third resistor R3 is grounded. In this embodiment, the third resistor R3 is a pull-down ground resistor, and when the first switch Q1 is turned off, the third resistor R3 can ensure that the level at the V3 point is at a low level, thereby preventing uncertainty of the level at the V3 point.
Based on the above indicating lamp power releasing circuit, the present invention further provides an indicating circuit of a power supply 100, which includes the power supply 100, the indicating lamp 200 and the above indicating lamp power releasing circuit;
the energy storage circuit 300, the voltage comparison circuit 400 and the discharge circuit 500 in the indicator light electric quantity release circuit are sequentially connected, and the energy storage circuit 300, the voltage comparison circuit 400 and the discharge circuit 500 are further respectively connected with an indicator light 200 and a power supply 100;
the power supply 100 supplies power to the indicator lamp 200 and the energy storage circuit 300, the indicator lamp power release circuit is connected with the indicator lamp 200 and controls the voltage comparison circuit 400 to output a driving signal to the discharge circuit 500 when the voltage of the energy storage circuit is higher than that of the indicator lamp 200, and the indicator lamp is discharged through the discharge circuit 500. Since the indicator lamp power release circuit has been described in detail above, it is not described in detail here.
Based on the power supply indicating circuit, the invention further provides electronic equipment which comprises an equipment body, wherein the equipment body is internally provided with a circuit board, and the circuit board is provided with the power supply indicating circuit. Since the power indication circuit has been described in detail above, it is not described herein again.
In summary, the present invention provides an indicator light electric quantity release circuit, a power supply indicator circuit and an electronic device, where the indicator light electric quantity release circuit is used to connect an indicator light, the indicator light is connected to a power supply, and the indicator light electric quantity release circuit includes: the energy storage circuit, the voltage comparison circuit and the discharge circuit are connected in sequence; wherein the storage circuit receives a supply voltage for storage; the voltage comparison circuit receives the voltage of the energy storage circuit and the voltage of the indicator lamp for comparison, and when the voltage of the energy storage circuit is higher than the voltage of the indicator lamp, a driving signal is output to the discharge circuit; and the discharge circuit receives the driving signal to conduct, and the residual electric quantity of the indicator lamp is discharged. The invention stores the electric quantity in advance through the energy storage circuit, and when the power supply is powered off, the voltage comparison circuit outputs a driving signal according to the voltage of the energy storage circuit and the voltage of the indicating lamp to drive the discharging circuit to discharge the residual electric quantity of the indicating lamp.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (10)
1. An indicator lamp power release circuit for connection to an indicator lamp, the indicator lamp being connected to a power source, the indicator lamp power release circuit comprising: the energy storage circuit, the voltage comparison circuit and the discharge circuit are connected in sequence;
wherein the storage circuit receives a supply voltage for storage; the voltage comparison circuit receives the voltage of the energy storage circuit and the voltage of the indicator lamp for comparison, and when the voltage of the energy storage circuit is higher than the voltage of the indicator lamp, a driving signal is output to the discharge circuit; and the discharge circuit receives the driving signal to conduct, and the residual electric quantity of the indicator lamp is discharged.
2. The power discharge circuit of claim 1, wherein the energy storage circuit comprises an energy storage capacitor for receiving a power voltage for storage, one end of the energy storage capacitor is connected to the indicator and the voltage comparison circuit, and the other end of the energy storage capacitor is grounded.
3. The power release circuit of the indicator light of claim 2, wherein the energy storage circuit further comprises a reverse prevention circuit for preventing current back-flushing connected between the energy storage capacitor and the power supply and the indicator light, an input end of the reverse prevention circuit is connected with the indicator light and the power supply, and an output end of the reverse prevention circuit is connected with one end of the energy storage capacitor and the voltage comparison circuit.
4. The power release circuit of claim 3, wherein the energy storage circuit further comprises a current limiting circuit for current limiting protection between the anti-reverse circuit and the energy storage capacitor, one end of the current limiting circuit is connected to the discharge circuit, and the other end of the current limiting circuit is connected to the energy storage capacitor.
5. The power release circuit of claim 1, wherein the energy storage circuit comprises an energy storage capacitor, a first diode, and a first resistor, an input terminal of the first diode is connected to the indicator, an output terminal of the first diode is connected to one terminal of the first resistor, one terminal of the first resistor is connected to the energy storage capacitor and the voltage comparison circuit, and the other terminal of the energy storage capacitor is grounded.
6. The indicator lamp power release circuit of claim 1, wherein the voltage comparison circuit comprises a second resistor and a first switch tube, one end of the second resistor is connected to the indicator lamp, the other end of the second resistor is connected to the control end of the first switch tube, the input end of the first switch tube is connected to the energy storage circuit, and the output end of the first switch tube is connected to the discharge circuit.
7. The indicator lamp power discharge circuit according to claim 1, wherein the discharge circuit includes a bias resistor, a second switch, and a discharge resistor, one end of the bias resistor is connected to the voltage comparison circuit, the other end of the bias resistor is connected to a control end of the second switch, an input end of the second switch is connected to one end of the discharge resistor, the other end of the discharge resistor is connected to the indicator lamp, and an output end of the second switch is grounded.
8. The circuit for discharging the amount of power of an indicator light of claim 7, wherein the discharge circuit further comprises a third resistor, one end of the third resistor is connected to one end of the bias resistor and the voltage comparison circuit, and the other end of the third resistor is grounded.
9. A power indicator circuit comprising a power source, an indicator light, and an indicator light charge discharge circuit as claimed in any one of claims 1 to 8;
the energy storage circuit, the voltage comparison circuit and the discharge circuit are sequentially connected, and the energy storage circuit, the voltage comparison circuit and the discharge circuit are also respectively connected with an indicator lamp and a power supply;
the power supply supplies power to the indicator lamp and the energy storage circuit, the indicator lamp electric quantity release circuit is connected with the indicator lamp and controls the voltage comparison circuit to output a driving signal to the discharge circuit when the voltage of the energy storage circuit is higher than that of the indicator lamp, and the discharge circuit discharges for the indicator lamp.
10. An electronic device, comprising a device body, wherein a circuit board is arranged in the device body, and the circuit board is provided with the power indication circuit according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011038275.6A CN112186848A (en) | 2020-09-27 | 2020-09-27 | Electric quantity release circuit of indicator lamp, power supply indicating circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011038275.6A CN112186848A (en) | 2020-09-27 | 2020-09-27 | Electric quantity release circuit of indicator lamp, power supply indicating circuit and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN112186848A true CN112186848A (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011038275.6A Pending CN112186848A (en) | 2020-09-27 | 2020-09-27 | Electric quantity release circuit of indicator lamp, power supply indicating circuit and electronic equipment |
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| CN (1) | CN112186848A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101930219A (en) * | 2009-06-22 | 2010-12-29 | 研祥智能科技股份有限公司 | Discharge control circuit and computer |
| CN102044981A (en) * | 2009-10-16 | 2011-05-04 | 深圳Tcl新技术有限公司 | Switching power supply with capacitor discharge circuit |
| CN203883692U (en) * | 2014-06-03 | 2014-10-15 | 深圳市创维群欣安防科技有限公司 | Power board and energy release circuit thereof |
| CN104283301A (en) * | 2013-07-10 | 2015-01-14 | 鸿富锦精密工业（深圳）有限公司 | Control circuit and electronic device with same |
| CN107910913A (en) * | 2017-11-24 | 2018-04-13 | 卫星电子（中山）有限公司 | A kind of slow discharge circuit of DC power supply output |
| US20180175633A1 (en) * | 2016-12-20 | 2018-06-21 | Maxwell Technologies, Inc. | Systems and methods for improving cell balancing and cell failure detection |
-
2020
- 2020-09-27 CN CN202011038275.6A patent/CN112186848A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101930219A (en) * | 2009-06-22 | 2010-12-29 | 研祥智能科技股份有限公司 | Discharge control circuit and computer |
| CN102044981A (en) * | 2009-10-16 | 2011-05-04 | 深圳Tcl新技术有限公司 | Switching power supply with capacitor discharge circuit |
| CN104283301A (en) * | 2013-07-10 | 2015-01-14 | 鸿富锦精密工业（深圳）有限公司 | Control circuit and electronic device with same |
| CN203883692U (en) * | 2014-06-03 | 2014-10-15 | 深圳市创维群欣安防科技有限公司 | Power board and energy release circuit thereof |
| US20180175633A1 (en) * | 2016-12-20 | 2018-06-21 | Maxwell Technologies, Inc. | Systems and methods for improving cell balancing and cell failure detection |
| CN107910913A (en) * | 2017-11-24 | 2018-04-13 | 卫星电子（中山）有限公司 | A kind of slow discharge circuit of DC power supply output |
Non-Patent Citations (1)
| Title |
|---|
| 彭震: "《51菜鸟到ARM（STM32）高手进阶之旅》", 30 August 2014 * |
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