CN206533278U - A kind of novel power supply delay start controls circuit - Google Patents
A kind of novel power supply delay start controls circuit Download PDFInfo
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- CN206533278U CN206533278U CN201720268714.XU CN201720268714U CN206533278U CN 206533278 U CN206533278 U CN 206533278U CN 201720268714 U CN201720268714 U CN 201720268714U CN 206533278 U CN206533278 U CN 206533278U
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Abstract
The utility model is related to a kind of novel power supply delay start control circuit, including triode, first electric capacity, second electric capacity, diode and resistance, the base stage of the triode connects one end of first electric capacity respectively, one end of second electric capacity and the negative pole of the diode, the emitter stage of the triode connects the other end of second electric capacity and the positive pole of the diode respectively, the colelctor electrode of the triode connects one end of the resistance, the other end of the resistance connects the other end of first electric capacity and the supply voltage of external chip respectively, the grounded emitter of the triode.Compared with the prior art, the beneficial effects of the utility model：Controlled using triode, time delay length is adjusted by controlling triode gate electrode current, so that power on time is controlled, so as to solve the problem of continuous switching on and shutting down destroys system in the power supply continuous hot plug process short time.
Description
Technical field
The utility model is related to electronic circuit technology field, more particularly to a kind of novel power supply delay start control circuit.
Background technology
Power supply is when used in parallel, and some occasions need to extend the startup time, prevents that repeat switch machine is damaged in the short time
System, usual every power supply can make a RC delay circuit, but so do, the limited time system of delay, when wanting to extend very long
Between be difficult control, continuous hot plug delay effect is obvious, causes continuous switching on and shutting down in the continuous swapping process of hot plug power supply to be broken
Bad system.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of novel power supply delay start control circuit, existing to solve
There is the deficiency in technology.
In order to achieve the above object, the purpose of this utility model is achieved through the following technical solutions：
A kind of novel power supply delay start control circuit, including triode, the first electric capacity, the second electric capacity, diode are provided
And resistance, the base stage of the triode connects one end of first electric capacity, one end of second electric capacity and described two respectively
The negative pole of pole pipe, the emitter stage of the triode connects the other end of second electric capacity and the positive pole of the diode respectively,
The colelctor electrode of the triode connects one end of the resistance, and the other end of the resistance connects the another of first electric capacity respectively
One end and the supply voltage of external chip, the grounded emitter of the triode.
Above-mentioned novel power supply delay start controls circuit, wherein, the triode is NPN type triode.
Compared with the prior art, the beneficial effects of the utility model are：
Controlled using triode, time delay length is adjusted by controlling triode gate electrode current, so as to control power supply
The startup time, so as to solve the problem of continuous switching on and shutting down destroys system in the power supply continuous hot plug process short time.
Brief description of the drawings
Constitute a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new
The schematic description and description of type is used to explain the utility model, does not constitute to improper restriction of the present utility model.
In accompanying drawing：
Fig. 1 shows that the utility model power supply delay start controls the circuit theory diagrams of circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
With reference to shown in Fig. 1, the utility model power supply delay start control circuit includes triode Q1, the first electric capacity C1, the
Two electric capacity C2, diode D1 and resistance R1, triode Q1 base stage connect the first electric capacity C1 one end, the second electric capacity C2 respectively
One end and diode D1 negative pole, triode Q1 emitter stage are connecting the second electric capacity C2 other end and diode D1 just respectively
Pole, triode Q1 colelctor electrode connection resistance R1 one end, the resistance R1 other end connects the first electric capacity C1 other end respectively
With the supply voltage Vcc of external chip, triode Q1 grounded emitter GND.In the technical program, triode Q1 is NPN type
Triode.Specifically, C2 main functions are that filtering prevents triode Q1 misoperations, and D1 main functions are clamper functions, protection
Triode is against damages.When Vcc is just started power up, Vcc is given by the base stage B of C1 and triode, emitter E formation loop
C1 charges, transistor collector C, emitter E conducting, drops Vcc by current-limiting resistance R1 and drags down, so as to delay the startup time.
When electric capacity C1 is full of, Vcc is disconnected by the base stage B of C1 and triode, emitter E formation loop, colelctor electrode C, the hair of triode
Emitter-base bandgap grading E disconnects, and Vcc can give chip normal work.
From above-described embodiment as can be seen that advantage of the present utility model is：
Controlled using triode, time delay length is adjusted by controlling triode gate electrode current, so as to control power supply
The startup time, so as to solve the problem of continuous switching on and shutting down destroys system in the power supply continuous hot plug process short time.
Specific embodiment of the utility model is described in detail above, but the utility model is not restricted to the above
The specific embodiment of description, it is intended only as example.To those skilled in the art, any equivalent modifications and substitute also all
Among category of the present utility model.Therefore, the impartial conversion made in the case where not departing from spirit and scope of the present utility model
And modification, it should all cover in the range of the utility model.
Claims (2)
1. a kind of novel power supply delay start controls circuit, it is characterised in that including triode, the first electric capacity, the second electric capacity, two
Pole pipe and resistance, the base stage of the triode connect one end of first electric capacity, one end of second electric capacity and institute respectively
The negative pole of diode is stated, the emitter stage of the triode is connecting the other end and the diode of second electric capacity just respectively
Pole, the colelctor electrode of the triode connects one end of the resistance, and the other end of the resistance connects first electric capacity respectively
The other end and external chip supply voltage, the grounded emitter of the triode.
2. novel power supply delay start as claimed in claim 1 controls circuit, it is characterised in that the triode is NPN type three
Pole pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720268714.XU CN206533278U (en) | 2017-03-20 | 2017-03-20 | A kind of novel power supply delay start controls circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720268714.XU CN206533278U (en) | 2017-03-20 | 2017-03-20 | A kind of novel power supply delay start controls circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206533278U true CN206533278U (en) | 2017-09-29 |
Family
ID=59917797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720268714.XU Active CN206533278U (en) | 2017-03-20 | 2017-03-20 | A kind of novel power supply delay start controls circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206533278U (en) |
-
2017
- 2017-03-20 CN CN201720268714.XU patent/CN206533278U/en active Active
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