CN206135721U - Steady voltage switching power supply based on 555 time -recorder - Google Patents
Steady voltage switching power supply based on 555 time -recorder Download PDFInfo
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- CN206135721U CN206135721U CN201621080010.1U CN201621080010U CN206135721U CN 206135721 U CN206135721 U CN 206135721U CN 201621080010 U CN201621080010 U CN 201621080010U CN 206135721 U CN206135721 U CN 206135721U
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Abstract
The utility model discloses a steady voltage switching power supply based on 555 time -recorder, including multi resonant oscillation circuit, monostable circuit and error magnification circuit, multi resonant oscillation circuit comprises chip IC1, resistance R1 and electric capacity C1, and monostable circuit comprises chip IC2, resistance R4 and electric capacity C2, and the error magnification circuit comprises resistance R6, resistance R7, potentiometre RP1 and triode V2. The utility model discloses steady voltage switching power supply based on 555 time -recorder adopts two 555 timer chip to constitute multivibrator and monostable circuit respectively to this off state that opens to the triode controls, still is equipped with the error magnification circuit at the voltage output end, is used for carrying out feedback regulation to the voltage -controlled terminal voltage of monostable circuit, thereby has realized the purpose of uninterrupted power supply and intelligent steady voltage, effectively protects the load not receive the harm of the excessive pressure and the under -voltage condition.
Description
Technical field
This utility model is related to a kind of regulated power supply, specifically a kind of voltage-stabilizing switch power source for being based on 555 timers.
Background technology
As society burns the wind, electrical equipment grows with each passing day.But the aging and lagging in development of electrical power distribution facility, and
The reasons such as the bad and electricity shortage of design cause the too low of terminal temperature difference voltage, and the end of a thread user then the normal voltages of Jing are higher.To with
Particularly strict to the voltage request high and new technology of electric equipment and precision equipment, just as not insuring.Unstable voltage meeting
Mortal injury or misoperation are caused to equipment, production is affected, many-sided losses such as date of delivery is delayed, quality is unstable are caused.Together
When acceleration equipment it is aging, affect service life even to burn accessory, make owner face the puzzlement that needs repairing or in a short time
Will more new equipment, waste of resource；Even there is security incident in severe patient, cause immeasurable loss.Therefore some are to electricity consumption
The higher electrical equipment of prescription can all be equipped with regulated power supply.
Existing regulated power supply is mostly very different, wherein substantial portion of low-end product voltage regulation result is not ideal enough,
For example, application number：A kind of 201520565497.1 voltage-stabilized power supply circuit indicated with LED, it is when power supply occurs abnormal
The form for disconnecting switch element is taken to carry out voltage stabilizing, this mode is likely to result in the dead electricity in the short time of load, serious shadow
Ring it to use.
Utility model content
The purpose of this utility model is to provide a kind of simple structure, easy to use opened based on the voltage stabilizing of 555 timers
Powered-down source, to solve the problems, such as above-mentioned background technology in propose.
For achieving the above object, this utility model provides following technical scheme：
A kind of voltage-stabilizing switch power source for being based on 555 timers, including the amplification of multi-resonant oscillating circuit, monostable circuit and error
Circuit, the multi-resonant oscillating circuit is made up of chip IC 1, resistance R1 and electric capacity C1, and monostable circuit is by chip IC 2, resistance R4
Constitute with electric capacity C2, error amplifying circuit is made up of resistance R6, resistance R7, potentiometer RP1 and audion V2；
Resistance R1 one end connection resistance R3, resistance R4, resistance R5, the colelctor electrode of audion V1, the pin 4 of chip IC 1,
The pin 8 of chip IC 1, the pin 4 of chip IC 2, the other end connection resistance of the pin 8 of chip IC 2 and power supply VCC, resistance R1
The pin 7 of R2 and chip IC 1, the pin 6 of the other end connection electric capacity C1, the pin 2 of chip IC 1 and chip IC 1 of resistance R2, electricity
Hold other end connection electric capacity C2, the anode of diode D2, transient voltage suppressor diode D3, resistance R7, load P, the chip of C1
The pin 1 of IC1 and the pin 1 of chip IC 2, the other end and the pin 2 of chip IC 2 of the connection resistance R3 of pin 3 of chip IC 1,
The anode of the connection diode D1 of pin 3 of chip IC 2, the base stage of the negative electrode connecting triode V1 of diode D1, resistance R5's is another
The emitter stage of one end connecting triode V2 and the other end of transient voltage suppressor diode D3, the other end connection electric capacity of resistance R4
The pin 7 of the other end of C2, the pin 6 of chip IC 2 and chip IC 2, the base stage of audion V2 connects the slip of potentiometer RP1
End, the negative electrode of emitter stage connection diode D2 of audion V1 and the other end connection resistance R6 of inductance L1, inductance L1 and load
The other end of P, resistance R6 connects a fixing end of potentiometer RP1, another fixing end connection resistance R7's of potentiometer RP1
The other end.
As preferred version of the present utility model：The model of the chip IC 1 and chip IC 2 is NE555.
As preferred version of the present utility model：The audion V1 and audion V2 are NPN type triode.
As preferred version of the present utility model：Model 2CK9 of the diode D1, the model of diode D2
2CN1, model 2CW9 of transient voltage suppressor diode D3.
Compared with prior art, the beneficial effects of the utility model are：This utility model is opened based on the voltage stabilizing of 555 timers
Powered-down source separately constitutes multivibrator and monostable circuit using two 555 timer chips, with this switch to audion
State is controlled, and in voltage output end error amplifying circuit is additionally provided with, for carrying out instead to the voltage-controlled terminal voltage of monostable circuit
Feedback is adjusted, it is achieved thereby that the purpose of uninterrupted power supply and Intellight voltage-stabilizing, effective protection load is not by over-pressed and undervoltage condition
Infringement.
Description of the drawings
Fig. 1 is the circuit diagram of the voltage-stabilizing switch power source based on 555 timers；
Fig. 2 is signal waveforms of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
Refer to Fig. 1,2, a kind of voltage-stabilizing switch power source for being based on 555 timers, including multi-resonant oscillating circuit, monostable electricity
Road and error amplifying circuit, the multi-resonant oscillating circuit is made up of chip IC 1, resistance R1 and electric capacity C1, and monostable circuit is by core
Piece IC2, resistance R4 and electric capacity C2 are constituted, and error amplifying circuit is made up of resistance R6, resistance R7, potentiometer RP1 and audion V2；
Resistance R1 one end connection resistance R3, resistance R4, resistance R5, the colelctor electrode of audion V1, the pin 4 of chip IC 1,
The pin 8 of chip IC 1, the pin 4 of chip IC 2, the other end connection resistance of the pin 8 of chip IC 2 and power supply VCC, resistance R1
The pin 7 of R2 and chip IC 1, the pin 6 of the other end connection electric capacity C1, the pin 2 of chip IC 1 and chip IC 1 of resistance R2, electricity
Hold other end connection electric capacity C2, the anode of diode D2, transient voltage suppressor diode D3, resistance R7, load P, the chip of C1
The pin 1 of IC1 and the pin 1 of chip IC 2, the other end and the pin 2 of chip IC 2 of the connection resistance R3 of pin 3 of chip IC 1,
The anode of the connection diode D1 of pin 3 of chip IC 2, the base stage of the negative electrode connecting triode V1 of diode D1, resistance R5's is another
The emitter stage of one end connecting triode V2 and the other end of transient voltage suppressor diode D3, the other end connection electric capacity of resistance R4
The pin 7 of the other end of C2, the pin 6 of chip IC 2 and chip IC 2, the base stage of audion V2 connects the slip of potentiometer RP1
End, the negative electrode of emitter stage connection diode D2 of audion V1 and the other end connection resistance R6 of inductance L1, inductance L1 and load
The other end of P, resistance R6 connects a fixing end of potentiometer RP1, another fixing end connection resistance R7's of potentiometer RP1
The other end.
The model of chip IC 1 and chip IC 2 is NE555.Audion V1 and audion V2 are NPN type triode.Two
Model 2CK9 of pole pipe D1, model 2CN1 of diode D2, model 2CW9 of transient voltage suppressor diode D3.
Operation principle of the present utility model is：R1, R2, C1 and the composition astable multivibrator of chip IC 1.Frequency of oscillation
Determined by R1, R2, C1 value, according to the parameter in figure, its frequency of oscillation is 15kHz.R3 is the load resistance of IC1, IC1 outputs
Pulse triggering signal T waveforms are as shown in Figure 2.R4, C2 and IC2 constitute monostable flipflop, and the pulse triggering signal of IC1 outputs is straight
Pick the foot of low level triggering end the 2nd of people IC2.When triggering level is high level, monostable flipflop is in stable state, exports low
Level, audion V1 is in cut-off state.Diode D1 in Fig. 1 is level shift pipe, to ensure that V1 exports low in trigger
Reliable cut-off during level.Monostable flipflop upset when triggering end low level arrives, exports high level（Temporary stable state）, V1 saturations
Conducting, while power supply is charged by R4 to electric capacity C2.When current potential of the current potential on C2 higher than the feet of IC2 the 5th, monostable trigger is again
Stable state is returned to, low level is output as, V1 cut-offs, electric capacity C2 is discharged quickly by the discharge tube inside IC2.So moving in circles makes
V1 is operated on off state.L1 in Fig. 1 is energy storage inductor, and D2 is Zener diode.The output waveform of monostable trigger with touch
The current potential Vco2 relations of the trigger of originator and the voltage-controlled feet of end IC2 the 5th are as shown in Figure 2.The automatic stable pressure course of whole circuit
It is：The sampled electric circuit inspection of output voltage Vo and reference voltage are compared, and the error signal of detection is put by error amplifying circuit
Greatly, the height of the voltage-controlled foot current potential Vco2 of end the 5th of adjust automatically IC2, makes trigger output signal pulses width tpo respective changes.
The ON time of adjustment switching tube V1, so as to reach the purpose of automatic voltage regulation.The size of output voltage is carried out by potentiometer RP
Adjust.The oscillogram of tpo is as shown in Figure 2.
Claims (3)
1. a kind of voltage-stabilizing switch power source for being based on 555 timers, including multi-resonant oscillating circuit, monostable circuit and error amplify electricity
Road, it is characterised in that the multi-resonant oscillating circuit is made up of chip IC 1, resistance R1 and electric capacity C1, and monostable circuit is by chip
IC2, resistance R4 and electric capacity C2 are constituted, and error amplifying circuit is made up of resistance R6, resistance R7, potentiometer RP1 and audion V2；
One end connection resistance R3 of resistance R1, resistance R4, resistance R5, the colelctor electrode of audion V1, the pin 4, chip of chip IC 1
The pin 8 of IC1, the pin 4 of chip IC 2, the other end connection resistance R2 of the pin 8 of chip IC 2 and power supply VCC, resistance R1 and
The pin 7 of chip IC 1, the pin 6 of the other end connection electric capacity C1, the pin 2 of chip IC 1 and chip IC 1 of resistance R2, electric capacity C1
Other end connection electric capacity C2, the anode of diode D2, transient voltage suppressor diode D3, resistance R7, load P, chip IC 1
The pin 1 of pin 1 and chip IC 2, the other end and the pin 2 of chip IC 2 of the connection resistance R3 of pin 3 of chip IC 1, chip
The pin 3 of IC2 connects the anode of diode D1, the base stage of the negative electrode connecting triode V1 of diode D1, the other end of resistance R5
The emitter stage of connecting triode V2 and the other end of transient voltage suppressor diode D3, the other end connection electric capacity C2's of resistance R4
The pin 7 of the other end, the pin 6 of chip IC 2 and chip IC 2, the sliding end of the base stage connection potentiometer RP1 of audion V2, three
The negative electrode of emitter stage connection diode D2 and the other end connection resistance R6 of inductance L1, inductance L1 and load P of pole pipe V1, resistance
The other end of R6 connects a fixing end of potentiometer RP1, and another fixing end connection resistance R7's of potentiometer RP1 is another
End；The model of chip IC 1 and chip IC 2 is NE555.
2. a kind of voltage-stabilizing switch power source for being based on 555 timers according to claim 1, it is characterised in that three pole
Pipe V1 and audion V2 are NPN type triode.
3. a kind of voltage-stabilizing switch power source for being based on 555 timers according to claim 1, it is characterised in that two pole
Model 2CK9 of pipe D1, model 2CN1 of diode D2, model 2CW9 of transient voltage suppressor diode D3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621080010.1U CN206135721U (en) | 2016-09-26 | 2016-09-26 | Steady voltage switching power supply based on 555 time -recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621080010.1U CN206135721U (en) | 2016-09-26 | 2016-09-26 | Steady voltage switching power supply based on 555 time -recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206135721U true CN206135721U (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621080010.1U Expired - Fee Related CN206135721U (en) | 2016-09-26 | 2016-09-26 | Steady voltage switching power supply based on 555 time -recorder |
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| CN (1) | CN206135721U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109760A (en) * | 2018-07-09 | 2019-01-01 | 郑州拓华仪器有限公司 | A kind of vehicle-mounted illumination blowing integral type handset bracket |
-
2016
- 2016-09-26 CN CN201621080010.1U patent/CN206135721U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109760A (en) * | 2018-07-09 | 2019-01-01 | 郑州拓华仪器有限公司 | A kind of vehicle-mounted illumination blowing integral type handset bracket |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20170926 |
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| CF01 | Termination of patent right due to non-payment of annual fee |