CN205141990U - Soft start power controller - Google Patents
Soft start power controller Download PDFInfo
- Publication number
- CN205141990U CN205141990U CN201520840181.9U CN201520840181U CN205141990U CN 205141990 U CN205141990 U CN 205141990U CN 201520840181 U CN201520840181 U CN 201520840181U CN 205141990 U CN205141990 U CN 205141990U
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- resistance
- effect transistor
- field effect
- diode
- triode
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Abstract
The utility model discloses a soft start power controller, including resistance R1, field effect transistor Q1, diode D1, triode Q3, three terminal regulator U1 and electric capacity C1, the electric capacity C1 one end VCC that connects respectively, list R2, resistance R4, field effect transistor Q1's the S utmost point and triode Q4 projecting pole, field effect transistor Q1's D extremely distinguishes the connecting resistance R4 other end and three terminal regulator U1 input, anodal and the ground connection of diode D1 is connected to the three terminal regulator U1 earthing terminal, diode D1 negative pole is connecting resistance R3 and resistance R8 respectively, triode Q3 base is connected to the resistance R8 other end, grounded capacitance C1 is connected respectively to triode Q3 projecting pole, the three terminal regulator U1 output, the resistance R3 other end, resistance R6 and field effect transistor Q2's the S utmost point. The utility model discloses soft start power controller can effectively prevent switching power supply add that the electricity draws in the twinkling of an eye that a great electric current leads to like the background art in various problems, electric current simple structure, with low costs, small, especially adapted using widely.
Description
Technical field
The utility model relates to a kind of power-supply controller of electric, specifically a kind of soft start power-supply controller of electric.
Background technology
In various past and now conventional power supply, Switching Power Supply is very universal, generally can meet and anyly relate to requirement, this power supply very economical, but also there are some problems in the design, all there is an intrinsic shortcoming in a lot of Switching Power Supply: will draw a larger electric current instantaneously powering up, this electric current may reach 10 ~ 100 times of power supply static working current, possibility is had at least to produce the problem of two aspects thus, first, if current and power supply can not supply enough starting currents, Switching Power Supply may enter a kind of lock-out state and cannot start, second, this electric current may cause the reduction of input supply voltage, be enough to cause other power-equipment instant power-downs using same input power.
Utility model content
The purpose of this utility model is to provide a kind of soft start power-supply controller of electric, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of soft start power-supply controller of electric, comprises resistance R1, field effect transistor Q1, diode D1, triode Q3, three terminal regulator U1 and electric capacity C1, described electric capacity C1 one end connects power supply VCC respectively, list R2, resistance R4, the S pole of field effect transistor Q1 and triode Q4 emitter, the D pole contact resistance R4 other end and the three terminal regulator U1 input respectively of field effect transistor Q1, three terminal regulator U1 earth terminal connects diode D1 positive pole and ground connection, diode D1 negative pole is contact resistance R3 and resistance R8 respectively, resistance R8 other end connecting triode Q3 base stage, triode Q3 emitter connects ground capacity C1 respectively, three terminal regulator U1 output, the resistance R3 other end, the S pole of resistance R6 and field effect transistor Q2, the D pole of field effect transistor Q2 connects output end vo, the G pole contact resistance R6 other end and the resistance R5 respectively of field effect transistor Q2, resistance R5 other end connecting triode Q4 collector electrode, triode Q4 base stage contact resistance R7, the resistance R7 other end connects diode D2 positive pole, and diode D2 negative pole is contact resistance R1 respectively, the resistance R2 other end, the G pole of the electric capacity C1 other end and field effect transistor Q1, resistance R1 other end connecting triode Q3 collector electrode.
As further program of the utility model: described three terminal regulator U1 model is 7805.
As further program of the utility model: described power supply VCC voltage is 20V.
As the utility model further scheme: described diode D1 and diode D2 is voltage stabilizing didoe.
Compared with prior art, the beneficial effects of the utility model are: the utility model soft start power-supply controller of electric can effectively prevent Switching Power Supply from powering up the various problems as described in the background art drawn a larger electric current instantaneously and cause, circuit configuration is simple, cost is low, volume is little, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of soft start power-supply controller of electric.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of soft start power-supply controller of electric, comprises resistance R1, field effect transistor Q1, diode D1, triode Q3, three terminal regulator U1 and electric capacity C1, electric capacity C1 one end connects power supply VCC respectively, list R2, resistance R4, the S pole of field effect transistor Q1 and triode Q4 emitter, the D pole contact resistance R4 other end and the three terminal regulator U1 input respectively of field effect transistor Q1, three terminal regulator U1 earth terminal connects diode D1 positive pole and ground connection, diode D1 negative pole is contact resistance R3 and resistance R8 respectively, resistance R8 other end connecting triode Q3 base stage, triode Q3 emitter connects ground capacity C1 respectively, three terminal regulator U1 output, the resistance R3 other end, the S pole of resistance R6 and field effect transistor Q2, the D pole of field effect transistor Q2 connects output end vo, the G pole contact resistance R6 other end and the resistance R5 respectively of field effect transistor Q2, resistance R5 other end connecting triode Q4 collector electrode, triode Q4 base stage contact resistance R7, the resistance R7 other end connects diode D2 positive pole, and diode D2 negative pole is contact resistance R1 respectively, the resistance R2 other end, the G pole of the electric capacity C1 other end and field effect transistor Q1, resistance R1 other end connecting triode Q3 collector electrode.
Three terminal regulator U1 model is 7805.
Power supply VCC voltage is 20V.
Diode D1 and diode D2 is voltage stabilizing didoe.
Operation principle of the present utility model is: refer to Fig. 1, when power supply VCC connects, input current is shunted by current-limiting resistance R4, output end vo voltage starts to raise, when output voltage reaches 4.5V (D1 two ends 3.9V adds the VEB=0.6V of Q3), Q3 conducting is also charged to electric capacity C1, when C1 both end voltage VC reaches the threshold voltage of Q1, Q1 conducting, VC continues to raise, the complete conducting of Q1, a low impedance path is provided to input current, and effective bypass current-limiting resistance R4, when VC reaches 7.4V (D1 two ends 6.8V adds the VEB=0.6V of Q3), Q4 conducting, there is provided bias voltage to Q2 simultaneously, make Q2 conducting, such output end vo is connected with power supply VCC by a Low ESR, so far, power supply is completely booted, soft starting circuit also completes its function.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (4)
1. a soft start power-supply controller of electric, comprises resistance R1, field effect transistor Q1, diode D1, triode Q3, three terminal regulator U1 and electric capacity C1, is characterized in that, described electric capacity C1 one end connects power supply VCC respectively, list R2, resistance R4, the S pole of field effect transistor Q1 and triode Q4 emitter, the D pole contact resistance R4 other end and the three terminal regulator U1 input respectively of field effect transistor Q1, three terminal regulator U1 earth terminal connects diode D1 positive pole and ground connection, diode D1 negative pole is contact resistance R3 and resistance R8 respectively, resistance R8 other end connecting triode Q3 base stage, triode Q3 emitter connects ground capacity C1 respectively, three terminal regulator U1 output, the resistance R3 other end, the S pole of resistance R6 and field effect transistor Q2, the D pole of field effect transistor Q2 connects output end vo, the G pole contact resistance R6 other end and the resistance R5 respectively of field effect transistor Q2, resistance R5 other end connecting triode Q4 collector electrode, triode Q4 base stage contact resistance R7, the resistance R7 other end connects diode D2 positive pole, and diode D2 negative pole is contact resistance R1 respectively, the resistance R2 other end, the G pole of the electric capacity C1 other end and field effect transistor Q1, resistance R1 other end connecting triode Q3 collector electrode.
2. soft start power-supply controller of electric according to claim 1, is characterized in that, described three terminal regulator U1 model is 7805.
3. soft start power-supply controller of electric according to claim 1, is characterized in that, described power supply VCC voltage is 20V.
4. soft start power-supply controller of electric according to claim 1, is characterized in that, described diode D1 and diode D2 is voltage stabilizing didoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840181.9U CN205141990U (en) | 2015-10-27 | 2015-10-27 | Soft start power controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840181.9U CN205141990U (en) | 2015-10-27 | 2015-10-27 | Soft start power controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205141990U true CN205141990U (en) | 2016-04-06 |
Family
ID=55627742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520840181.9U Expired - Fee Related CN205141990U (en) | 2015-10-27 | 2015-10-27 | Soft start power controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205141990U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481435A (en) * | 2017-07-07 | 2017-12-15 | 湖北物连网智能用品有限公司 | A kind of internet is self-service to collect cabinet control system |
| CN107508475A (en) * | 2017-10-21 | 2017-12-22 | 河南寰球航空装备科技有限公司 | A kind of robot electric power system |
-
2015
- 2015-10-27 CN CN201520840181.9U patent/CN205141990U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481435A (en) * | 2017-07-07 | 2017-12-15 | 湖北物连网智能用品有限公司 | A kind of internet is self-service to collect cabinet control system |
| CN107508475A (en) * | 2017-10-21 | 2017-12-22 | 河南寰球航空装备科技有限公司 | A kind of robot electric power system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20161027 |