CN203204486U - Current reducing protection type power stabilizer for communication equipment - Google Patents
Current reducing protection type power stabilizer for communication equipment Download PDFInfo
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- CN203204486U CN203204486U CN 201320177985 CN201320177985U CN203204486U CN 203204486 U CN203204486 U CN 203204486U CN 201320177985 CN201320177985 CN 201320177985 CN 201320177985 U CN201320177985 U CN 201320177985U CN 203204486 U CN203204486 U CN 203204486U
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- resistance
- potentiometer
- electric capacity
- triode
- diode
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Abstract
The utility model discloses a current reducing protection type power stabilizer for communication equipment. The power stabilizer comprises an integrated voltage stabilizing chip, first to fifth capacitors, first to eighth resistors, first to third potentiometers, a first triode, a second triode, a first diode and a second diode. When output voltage is reduced to be lower than a voltage stabilizing value of the first diode, the first diode injects current to the base of the second triode through the second diode, the first potentiometer and the second potentiometer to promote the further reduction of the output voltage, and serves as a main factor for keeping the integrated voltage stabilizing chip in a protection state. The current reducing protection type power stabilizer special for the communication equipment has a protection function, is low in power consumption and applicable to a power supply system of an electronic communication product, and particularly is simple in structure, low in cost, small in size and favorable for popularization, a few components are adopted, and the size and the weight of the product can be reduced.
Description
Technical field
The utility model relates to a kind of communication apparatus power regulator, relates in particular to a kind of stream protection communication apparatus power regulator that subtracts.
Background technology
Voltage stabilizer is at various communication apparatus and the electronic equipment electronic component that all is absolutely necessary surely, but voltage stabilizer of the prior art all is coil form mostly, and volume is big, cost is high, power consumption is high, does not especially possess defencive function, thereby influences properties of product.
The utility model content
The purpose of this utility model provides a kind of subtracting to flow protection communication apparatus power regulator with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises integrated voltage stabilizing chip, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, first potentiometer, second potentiometer, the 3rd potentiometer, first triode, second triode, first diode and second diode, first pin of described integrated voltage stabilizing chip is connected with first end of described first electric capacity and first end of described the 8th resistance simultaneously, and first pin of described integrated voltage stabilizing chip is the cathode power supply input end, the power cathode input end simultaneously with second end of described first electric capacity, the positive pole of described first diode, first end of described second electric capacity, first end of described the 3rd electric capacity, first end of described the 5th electric capacity, first end of described the 3rd resistance, the sliding end of described first potentiometer, first end of described the 4th electric capacity, first end of described the 7th resistance is connected with the 3rd pin of described integrated voltage stabilizing chip, the negative pole while of described first diode and second end of described second electric capacity, second end of described the 8th resistance is connected with the positive pole of described second diode, second end of described the 3rd electric capacity is connected with the collector of described first triode, the base stage while of described the 3rd triode and first end of described first resistance, first end of described second resistance is connected with second pin of described integrated voltage stabilizing chip, second end of described second resistance is connected with second end of described the 4th electric capacity, the emitter while of described first triode and second end of described first resistance, first end of described first potentiometer is connected with first end of described the 4th resistance, second end of described first potentiometer is connected with first end of described second potentiometer, the sliding end of described second potentiometer is connected with the base stage of described second triode, second end of described second potentiometer is connected with first end of described the 5th resistance, second end while of described the 5th resistance and the emitter of described second triode, second end of described the 4th resistance, second end of described the 5th electric capacity is connected with first end of described the 3rd potentiometer, and second end of described the 4th resistance is the cathode power supply output terminal, second end of described the 3rd potentiometer is connected with the sliding end of described the 3rd potentiometer and first end of described the 6th resistance simultaneously, second end of described the 6th resistance is connected with the 4th pin of described integrated voltage stabilizing chip and second end of described the 7th resistance simultaneously, and the 5th pin of described integrated voltage stabilizing chip is connected with the collector of described second triode.
The beneficial effects of the utility model are:
The utility model is exclusively used in subtracting of communication apparatus and flows the protection voltage stabilizer; voltage stabilizer with defencive function and low-power consumption; be applicable to the electric power system of communication electronic product; especially simple in structure, adopt that element is few, cost is low, volume is little; can dwindle small product size; alleviate product weight, be conducive to promote.
Description of drawings
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1: the utility model comprises integrated voltage stabilizing chip IC, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the first potentiometer RP1, the second potentiometer RP2, the 3rd potentiometer RP3, the first triode VT1, the second triode VT2, the first diode VD1 and the second diode VD2, first pin of integrated voltage stabilizing chip IC is connected with first end of first capacitor C 1 and first end of the 8th resistance R 8 simultaneously, and first pin of integrated voltage stabilizing chip IC is the cathode power supply input end, the power cathode input end simultaneously with second end of first capacitor C 1, the positive pole of the first diode VD1, first end of second capacitor C 2, first end of the 3rd capacitor C 3, first end of the 5th capacitor C 5, first end of the 3rd resistance R 3, the sliding end of the first potentiometer RP1, first end of the 4th capacitor C 4, first end of the 7th resistance R 7 is connected with the 3rd pin of integrated voltage stabilizing chip IC, the negative pole while of the first diode VD1 and second end of second capacitor C 2, second end of the 8th resistance R 8 is connected with the positive pole of the second diode VD2, second end of the 3rd capacitor C 3 is connected with the collector of the first triode VT1, the base stage while of the 3rd triode VT3 and first end of first resistance R 1, first end of second resistance R 2 is connected with second pin of integrated voltage stabilizing chip IC, second end of second resistance R 2 is connected with second end of the 4th capacitor C 4, the emitter while of the first triode VT1 and second end of first resistance R 1, first end of the first potentiometer RP1 is connected with first end of the 4th resistance R 4, second end of the first potentiometer RP1 is connected with first end of the second potentiometer RP2, the sliding end of the second potentiometer RP2 is connected with the base stage of the second triode VT2, second end of the second potentiometer RP2 is connected with first end of the 5th resistance R 5, second end while of the 5th resistance R 5 and the emitter of the second triode VT2, second end of the 4th resistance R 4, second end of the 5th capacitor C 5 is connected with first end of the 3rd potentiometer RP3, and second end of the 4th resistance R 4 is the cathode power supply output terminal, second end of the 3rd potentiometer RP3 is connected with the sliding end of the 3rd potentiometer RP3 and first end of the 6th resistance R 6 simultaneously, second end of the 6th resistance R 6 is connected with the 4th pin of integrated voltage stabilizing chip IC and second end of the 7th resistance R 7 simultaneously, and the 5th pin of integrated voltage stabilizing chip IC is connected with the collector of the second triode VT2.
As shown in Figure 1: when the output current of overrate flows through the 4th resistance R 4, the second triode VT2 conducting, second resistance R, 2 voltages will reach over-current protection point 0.45V, and circuit enters the constant current guard mode; When output voltage drops to the voltage stabilizing value of the first diode VD1 when following; the first diode VD1 injects electric current by the second diode VD2, the first potentiometer RP1 and the second potentiometer RP2 to the base stage of the second triode VT2; impel output voltage further to descend; the first diode VD1 will become and keep the principal element that integrated voltage stabilizing chip IC is in guard mode; pressure drop on the 4th resistance R 4 becomes secondary cause, thereby has played the effect of the power tube of protection voltage stabilizer.The first potentiometer RP1 is used for adjusting and subtracts stream Chengdu, and the second potentiometer RP2 is used for finely tuning current-limiting points.
Claims (1)
1. one kind subtracts stream protection communication apparatus power regulator; it is characterized in that: comprise integrated voltage stabilizing chip; first electric capacity; second electric capacity; the 3rd electric capacity; the 4th electric capacity; the 5th electric capacity; first resistance; second resistance; the 3rd resistance; the 4th resistance; the 5th resistance; the 6th resistance; the 7th resistance; the 8th resistance; first potentiometer; second potentiometer; the 3rd potentiometer; first triode; second triode; first diode and second diode; first pin of described integrated voltage stabilizing chip is connected with first end of described first electric capacity and first end of described the 8th resistance simultaneously; and first pin of described integrated voltage stabilizing chip is the cathode power supply input end; the power cathode input end simultaneously with second end of described first electric capacity; the positive pole of described first diode; first end of described second electric capacity; first end of described the 3rd electric capacity; first end of described the 5th electric capacity; first end of described the 3rd resistance; the sliding end of described first potentiometer; first end of described the 4th electric capacity; first end of described the 7th resistance is connected with the 3rd pin of described integrated voltage stabilizing chip; the negative pole while of described first diode and second end of described second electric capacity; second end of described the 8th resistance is connected with the positive pole of described second diode; second end of described the 3rd electric capacity is connected with the collector of described first triode; the base stage while of described the 3rd triode and first end of described first resistance; first end of described second resistance is connected with second pin of described integrated voltage stabilizing chip; second end of described second resistance is connected with second end of described the 4th electric capacity; the emitter while of described first triode and second end of described first resistance; first end of described first potentiometer is connected with first end of described the 4th resistance; second end of described first potentiometer is connected with first end of described second potentiometer; the sliding end of described second potentiometer is connected with the base stage of described second triode; second end of described second potentiometer is connected with first end of described the 5th resistance; second end while of described the 5th resistance and the emitter of described second triode; second end of described the 4th resistance; second end of described the 5th electric capacity is connected with first end of described the 3rd potentiometer; and second end of described the 4th resistance is the cathode power supply output terminal; second end of described the 3rd potentiometer is connected with the sliding end of described the 3rd potentiometer and first end of described the 6th resistance simultaneously; second end of described the 6th resistance is connected with the 4th pin of described integrated voltage stabilizing chip and second end of described the 7th resistance simultaneously, and the 5th pin of described integrated voltage stabilizing chip is connected with the collector of described second triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320177985 CN203204486U (en) | 2013-04-10 | 2013-04-10 | Current reducing protection type power stabilizer for communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320177985 CN203204486U (en) | 2013-04-10 | 2013-04-10 | Current reducing protection type power stabilizer for communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203204486U true CN203204486U (en) | 2013-09-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320177985 Expired - Fee Related CN203204486U (en) | 2013-04-10 | 2013-04-10 | Current reducing protection type power stabilizer for communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203204486U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652940A (en) * | 2016-03-07 | 2016-06-08 | 何小平 | Intelligent voltage-stabilizing power control circuit |
| CN108599306A (en) * | 2018-05-11 | 2018-09-28 | 商洛学院 | A kind of lead acid batteries charger |
| CN112865252A (en) * | 2021-02-26 | 2021-05-28 | 江西应用技术职业学院 | Charging voltage stabilizer for electric automobile |
-
2013
- 2013-04-10 CN CN 201320177985 patent/CN203204486U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652940A (en) * | 2016-03-07 | 2016-06-08 | 何小平 | Intelligent voltage-stabilizing power control circuit |
| CN108599306A (en) * | 2018-05-11 | 2018-09-28 | 商洛学院 | A kind of lead acid batteries charger |
| CN112865252A (en) * | 2021-02-26 | 2021-05-28 | 江西应用技术职业学院 | Charging voltage stabilizer for electric automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20140410 |