CN205951864U - Supply circuit postpones - Google Patents
Supply circuit postpones Download PDFInfo
- Publication number
- CN205951864U CN205951864U CN201620699275.3U CN201620699275U CN205951864U CN 205951864 U CN205951864 U CN 205951864U CN 201620699275 U CN201620699275 U CN 201620699275U CN 205951864 U CN205951864 U CN 205951864U
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- Prior art keywords
- relay
- electric capacity
- resistance
- power supply
- coil
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Abstract
The utility model discloses a supply circuit postpones, including electric capacity C1, the general supply is connected to electric capacity C1's one end, electric capacity C1's the other end and triode Q1's the equal ground connection of projecting pole, and the one end of relay JD1 coil and relay JD1's movable contact are still connected to the general supply, and triode Q1's collecting electrode is connected to the other end of relay JD1 coil, and relay JD1's normally open contact is as supplying electrical output. The utility model discloses charged to electric capacity C1 through resistance R1 based on last when electricity, electric capacity C1 both ends voltage can only gradually change and the principle that can not suddenly change to when combining the circular telegram of relay JD1 between movable contact and the normally open contact switch just closed characteristic design form, circuit structure is simple, small, with low costs.
Description
Technical field
This utility model is related to analog circuit, more particularly to a kind of delay power supply circuits.
Background technology
Usually can be equipped with a lot of outut devices in caravan, commercial vehicle, for example various light fixtures, the hatch door that can stretch,
Audio and video player etc..Caravan, the main power of commercial vehicle need to postpone after connecting one section of 100ms about time again to these equipment
Power supply power, so can prevent these equipment flicker power supply, lead to device damage.However, of the prior art postpone to supply
Often complex structure, volume be big for circuit, high cost.
Utility model content
Utility model purpose：The purpose of this utility model is to provide that a kind of circuit structure is simple, small volume, low cost prolong
Power supply circuits late.
Technical scheme：For reaching this purpose, this utility model employs the following technical solutions：
Delay power supply circuits described in the utility model, including electric capacity C1, one end of electric capacity C1 connects main power, electric capacity C1
The other end be all grounded with the emitter stage of audion Q1, main power is also connected with one end of relay JD1 coil and relay JD1
Movable contact, the colelctor electrode of the other end connecting triode Q1 of relay JD1 coil, the normally opened contact of relay JD1 is as power supply
Outfan.
Further, described power supply circuits also include resistance R1, and main power connects one end of resistance R1, the other end of resistance R1
Connect one end of electric capacity C1.
Further, described power supply circuits also include resistance R2, and one end of electric capacity C1 connects resistance R2, the other end of resistance R2
The base stage of connecting triode Q1.
Further, in order to absorb the counter electromotive force in loop when relay JD1 disconnects, described power supply circuits also include diode
The negative pole of D1, diode D1 connects one end of relay JD1 coil, and the positive pole of diode D1 connects the another of relay JD1 coil
One end.
Further, described power supply t time delay and the relation of resistance R1, resistance R2 and electric capacity C1 are：
Beneficial effect：This utility model is based on and by resistance R1, electric capacity C1 is charged during upper electricity, and electric capacity C1 both end voltage is only
Can gradual change and the principle that can not be mutated, and combine during relay JD1 energising what switch between movable contact and normally opened contact just closed
Characteristics design forms, and circuit structure is simple, small volume, low cost.
Brief description
Fig. 1 is the circuit diagram of specific embodiment of the present utility model.
Specific embodiment
With reference to the accompanying drawings and detailed description the technical solution of the utility model is further introduced.
Specific embodiment of the present utility model is as shown in figure 1, the main power VDD_IN coming from automobile inputs to resistance
One end of R1, the other end of resistance R1 connects one end of electric capacity C1, and one end of electric capacity C1 is also connected with one end of resistance R2, resistance R2
Other end connecting triode Q1 base stage, the other end of the emitter stage of audion Q1 and electric capacity C1 is all grounded, and comes from automobile
Main power VDD_IN be also connected with one end of relay JD1 coil and the movable contact of relay JD1, relay JD1 coil another
The colelctor electrode of one end connecting triode Q1, one end of relay JD1 coil is also connected with the negative pole of diode D1, relay JD1 line
The other end of circle is also connected with the positive pole of diode D1, the normally opened contact of relay JD1 as power supply outfan, for setting to automobile
Standby offer power vd D_OUT.Do not consider the base resistance of audion Q1, then power supply t time delay and resistance R1, resistance R2 and electricity
Hold C1 relation beTherefore, it can by adjusting the resistance of resistance R1, R2 and the capacity of electric capacity C1, to change on
The pickup time of relay JD1 coil after electricity, namely change time delay of powering.
Claims (5)
1. a kind of postpone power supply circuits it is characterised in that：Including electric capacity C1, one end of electric capacity C1 connects main power, electric capacity C1's
The other end is all grounded with the emitter stage of audion Q1, and main power is also connected with one end of relay JD1 coil and the dynamic of relay JD1
Contact, the colelctor electrode of the other end connecting triode Q1 of relay JD1 coil, the normally opened contact of relay JD1 is defeated as powering
Go out end.
2. according to claim 1 delay power supply circuits it is characterised in that：Also include resistance R1, main power connects resistance
One end of R1, the other end of resistance R1 connects one end of electric capacity C1.
3. according to claim 1 delay power supply circuits it is characterised in that：Also include resistance R2, one end of electric capacity C1 is even
The base stage of the other end connecting triode Q1 of connecting resistance R2, resistance R2.
4. according to claim 1 delay power supply circuits it is characterised in that：Also include diode D1, diode D1's is negative
Pole connects one end of relay JD1 coil, and the positive pole of diode D1 connects the other end of relay JD1 coil.
5. according to claim 1 delay power supply circuits it is characterised in that：Described power supply t time delay and resistance R1, electricity
Resistance R2 and electric capacity C1 relation be：.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620699275.3U CN205951864U (en) | 2016-07-05 | 2016-07-05 | Supply circuit postpones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620699275.3U CN205951864U (en) | 2016-07-05 | 2016-07-05 | Supply circuit postpones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205951864U true CN205951864U (en) | 2017-02-15 |
Family
ID=57969303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620699275.3U Active CN205951864U (en) | 2016-07-05 | 2016-07-05 | Supply circuit postpones |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205951864U (en) |
-
2016
- 2016-07-05 CN CN201620699275.3U patent/CN205951864U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |