CN204103464U - Instrument Micro Energy Lose protective circuit - Google Patents
Instrument Micro Energy Lose protective circuit Download PDFInfo
- Publication number
- CN204103464U CN204103464U CN201420506076.7U CN201420506076U CN204103464U CN 204103464 U CN204103464 U CN 204103464U CN 201420506076 U CN201420506076 U CN 201420506076U CN 204103464 U CN204103464 U CN 204103464U
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- Prior art keywords
- storage battery
- resistance
- circuit
- power supply
- electrochemical capacitor
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Instrument Micro Energy Lose protective circuit, relates to protective circuit technical field, comprising: DC power supply, amplification detection circuit, protecting control circuit and storage battery power supply circuit; Described DC power supply, amplification detection circuit, protecting control circuit, storage battery power supply circuit are linked in sequence successively; Described power output part is divided into storage battery.Compared with prior art, at the utility model, have that to detect electric current low, strong interference immunity, the feature such as not power consumption after protection, and the utility model carries anti-interference amplifying circuit, antijamming capability is strong, detects precisely.
Description
Technical field
The utility model relates to protective circuit technical field, is specially instrument Micro Energy Lose protective circuit.
Background technology
Along with the development of electronic technology, the function of instrument and meter from strength to strength, a lot of instrument and meter has several operational modules, at present, instrument and meter mostly adopts powered battery, be used for providing power supply to various instrument and meter, the overdischarge of storage battery can cause pole plate acidifying, the useful life affecting storage battery does not say that the instrument and meter be also easy to precision causes damage, have serious consequences, for a lot of instrument, its output current is very little, if adopt the testing circuit cost of micron order too high.
Utility model content
The purpose of this utility model is to provide instrument Micro Energy Lose protective circuit, to solve the problem in background technology.
For achieving the above object, the utility model provides following technical scheme:
Instrument Micro Energy Lose protective circuit, comprising: DC power supply, amplification detection circuit, protecting control circuit and storage battery power supply circuit; Described DC power supply, amplification detection circuit, protecting control circuit, storage battery power supply circuit are linked in sequence successively; Described power output part is divided into storage battery.
Further, described amplification detection circuit is made up of coupling capacitance C1, single stage operational amplifier U, resistance R1 and triode Q1; The positive input butt coupling electric capacity C1 of single stage operational amplifier U, the other end of coupling capacitance C1 is connected with the positive pole of storage battery, the output of single stage operational amplifier U is connected with the base stage of resistance R1 and triode Q1, the other end of resistance R1 is connected with the negative pole of storage battery, and the emitter of triode Q1 is all connected with the negative pole of storage battery with the reverse input end of single stage operational amplifier U.
Further, described protecting control electricity routing resistance R2-R3, electrochemical capacitor C2-C3, controllable silicon SCR, trip switch K1 forms; Resistance R2, R3 connect, one end of resistance R2 is connected with battery positive voltage, the other end of resistance R2 is connected with one end of resistance R3, the other end of R3 is connected with battery terminal negative, and electrochemical capacitor C3 is connected in parallel on R3 two ends, the positive pole of electrochemical capacitor C2 and the control connection of controllable silicon SCR, the anode of controllable silicon SCR is connected with the negative pole of electrochemical capacitor C2, the negative electrode of controllable silicon SCR is connected with battery terminal negative, and the positive pole of electrochemical capacitor C is connected with battery positive voltage, and trip switch K1 is connected in parallel on electrochemical capacitor C2 two ends.
Compared with prior art, at the utility model, have that to detect electric current low, strong interference immunity, the feature such as not power consumption after protection, and the utility model carries anti-interference amplifying circuit, antijamming capability is strong, detects precisely.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
Instrument Micro Energy Lose protective circuit as shown in Figure 1, comprising: DC power supply, amplification detection circuit, protecting control circuit, storage battery power supply circuit; Described DC power supply, amplification detection circuit, protecting control circuit, storage battery power supply circuit are linked in sequence successively; Described power output part is divided into storage battery BT; Described amplification detection circuit is made up of coupling capacitance C1, single stage operational amplifier U, resistance R1 and triode Q1; The positive input butt coupling electric capacity C1 of single stage operational amplifier U, the other end of coupling capacitance C1 is connected with the positive pole of storage battery BT, the output of single stage operational amplifier U is connected with the base stage of resistance R1 and triode Q1, the other end of resistance R1 is connected with the negative pole of storage battery BT, and the emitter of triode Q1 is all connected with the negative pole of storage battery BT with the reverse input end of single stage operational amplifier U; Described protecting control electricity routing resistance R2-R3, electrochemical capacitor C2-C3, controllable silicon SCR, trip switch K1 forms; Resistance R2, R3 connect, one end of resistance R2 is connected with storage battery BT positive pole, the other end of resistance R2 is connected with one end of resistance R3, the other end of R3 is connected with storage battery BT negative pole, electrochemical capacitor C3 is connected in parallel on R3 two ends, the positive pole of electrochemical capacitor C2 and the control connection of controllable silicon SCR, the anode of controllable silicon SCR is connected with the negative pole of electrochemical capacitor C2, the negative electrode of controllable silicon SCR is connected with storage battery BT negative pole, the positive pole of electrochemical capacitor C is connected with storage battery BT positive pole, and trip switch K1 is connected in parallel on electrochemical capacitor C2 two ends.
In the utility model, after storage battery BT is full of electricity, manual closing switch K, because the voltage at C3 electric capacity two ends can not suddenly change, when powered on moment, the voltage at C3 two ends is approximately 0V, and Q1 ends, when the limit value of battery tension higher than coupling capacitance C1, signal is also amplified output by single stage operational amplifier Received signal strength, now triode Q1 saturation conduction, SCR1 gate pole ends because can not get trigger voltage, and K1 is failure to actuate.When storage battery BT voltage lower than coupling capacitance C1 limit value time, triode Q1 ends, and storage battery BT stops power supply.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. instrument Micro Energy Lose protective circuit, is characterized in that, comprising: DC power supply, amplification detection circuit, protecting control circuit and storage battery power supply circuit; Described DC power supply, amplification detection circuit, protecting control circuit, storage battery power supply circuit are linked in sequence successively; Described power output part is divided into storage battery.
2. instrument Micro Energy Lose protective circuit according to claim 1, is characterized in that: described amplification detection circuit is made up of coupling capacitance C1, single stage operational amplifier U, resistance R1 and triode Q1; The positive input butt coupling electric capacity C1 of single stage operational amplifier U, the other end of coupling capacitance C1 is connected with the positive pole of storage battery, the output of single stage operational amplifier U is connected with the base stage of resistance R1 and triode Q1, the other end of resistance R1 is connected with the negative pole of storage battery, and the emitter of triode Q1 is all connected with the negative pole of storage battery with the reverse input end of single stage operational amplifier U.
3. instrument Micro Energy Lose protective circuit according to claim 1, is characterized in that: described protecting control electricity routing resistance R2-R3, electrochemical capacitor C2-C3, controllable silicon SCR, and trip switch K1 forms; Resistance R2, R3 connect, one end of resistance R2 is connected with battery positive voltage, the other end of resistance R2 is connected with one end of resistance R3, the other end of R3 is connected with battery terminal negative, and electrochemical capacitor C3 is connected in parallel on R3 two ends, the positive pole of electrochemical capacitor C2 and the control connection of controllable silicon SCR, the anode of controllable silicon SCR is connected with the negative pole of electrochemical capacitor C2, the negative electrode of controllable silicon SCR is connected with battery terminal negative, and the positive pole of electrochemical capacitor C is connected with battery positive voltage, and trip switch K1 is connected in parallel on electrochemical capacitor C2 two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420506076.7U CN204103464U (en) | 2014-09-04 | 2014-09-04 | Instrument Micro Energy Lose protective circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420506076.7U CN204103464U (en) | 2014-09-04 | 2014-09-04 | Instrument Micro Energy Lose protective circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204103464U true CN204103464U (en) | 2015-01-14 |
Family
ID=52271865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420506076.7U Expired - Fee Related CN204103464U (en) | 2014-09-04 | 2014-09-04 | Instrument Micro Energy Lose protective circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204103464U (en) |
-
2014
- 2014-09-04 CN CN201420506076.7U patent/CN204103464U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20170904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |