CN205911960U - Switching power supply - Google Patents
Switching power supply Download PDFInfo
- Publication number
- CN205911960U CN205911960U CN201620850246.2U CN201620850246U CN205911960U CN 205911960 U CN205911960 U CN 205911960U CN 201620850246 U CN201620850246 U CN 201620850246U CN 205911960 U CN205911960 U CN 205911960U
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- circuit
- diode
- comparator
- power supply
- electrochemical capacitor
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Abstract
The utility model provides a switching power supply, it includes rectification filter circuit, connect in rectification filter circuit's vary voltage circuit, rectification filter circuit and be provided with supply circuit, a comparison circuit, the 2nd comparison circuit and control circuit's fan control circuit, rectification filter circuit connects in the vary voltage circuit, supply circuit connects in the vary voltage circuit for just give a comparison circuit and the power supply of the 2nd comparison circuit with the voltage conversion of vary voltage circuit output, a comparison circuit connects in rectification filter circuit and the 2nd comparison circuit for take a sample to operate to rectification filter circuit's negative terminal voltage and just export first voltage, the 2nd comparison circuit connects in control circuit for carry out the comparison with first voltage, control circuit connects in the fan, the utility model discloses a fan control circuit's setting reaches energy -conserving purpose.
Description
Technical field
This utility model is related to field of switch power, more particularly to a kind of Switching Power Supply with fan control circuitry.
Background technology
With the development of switch power technology, Switching Power Supply has become people in life and the upper requisite electricity of work
One of gas adnexa, the demand of wherein high-power charge power supply even more grows with each passing day.
But, general high-power charge power supply on market, as long as there is problems in that it is simply that connecting with the mains, radiate
Fan begins to work, to not do not charge or charging current little in the case of and heater members (such as mosfet, secondary
Level commutation diode and transformator) fan still works in the case that temperature is very low, so results in unnecessary electric energy loss.
Therefore, it is desirable to provide a kind of Switching Power Supply with fan control circuitry, to solve above-mentioned technical problem.
Utility model content
This utility model embodiment provides a kind of Switching Power Supply with fan control circuitry；To solve existing switch electricity
The technical problem of source power consumption.
This utility model embodiment provide a kind of Switching Power Supply, include current rectifying and wave filtering circuit be connected to described rectifying and wave-filtering
The transforming circuit of circuit, also includes fan control circuitry, comprising: power supply circuits, the first comparison circuit, the second comparison circuit and
Control circuit；
Described power supply circuits, are connected to described transforming circuit, for described first comparison circuit and the second comparison circuit
Power supply；
Described first comparison circuit, is connected to described current rectifying and wave filtering circuit and the second comparison circuit, for described rectification
The negative terminal voltage of the constant current sample resistance of filter circuit is sampled computing and exports first voltage；
Described second comparison circuit, is connected to described control circuit；
Described control circuit, is connected to fan；
Wherein, described first comparison circuit includes the first comparator in a lm324 chip,
The positive input of described first comparator is connected to the outfan of tl431 source of stable pressure and described by first resistor
The positive input of first comparator is grounded by second resistance, between the positive input of described first comparator and outfan
Series connection 3rd resistor, the negative input of described first comparator is connected to the negative of described constant current sample resistance by the 4th resistance
End, the outfan of described first comparator is connected to described second comparison circuit；
Described current rectifying and wave filtering circuit include the first diode, the second diode, the 3rd diode, the first electrochemical capacitor,
Two electrochemical capacitors, electric capacity, described constant current sample resistance and varistor,
Described first diode and the second diodes in parallel, the positive pole common port of described first diode and the second diode
It is connected to the first terminals of described transforming circuit；Described first electrochemical capacitor and the second electrochemical capacitor are in parallel, described first electricity
The positive pole common port of solution electric capacity and the second electrochemical capacitor is connected to the negative pole common port of described first diode and the second diode
With described varistor, the negative pole common port of described first electrochemical capacitor and the second electrochemical capacitor is connected to described transforming circuit
Second terminals and described constant current sample resistance；One end of described electric capacity by the 6th resistance be connected to described first diode and
The positive pole common port of the second diode, the other end is connected to the negative pole common port of described first diode and the second diode；Institute
State the 3rd diode and be connected to described varistor；
Described second comparison circuit includes the second comparator and described tl431 source of stable pressure in described lm324 chip,
Described tl431 source of stable pressure is connected to described power supply circuits, the outfan of described tl431 source of stable pressure by the 7th resistance
It is connected to the positive input of described second comparator, the negative input of described second comparator is connected to by the 8th resistance
The positive input of described first comparator, the power end of described second comparator is connected to described power supply circuits, and described second
The earth terminal ground connection of comparator, the outfan of described second comparator is connected to described control circuit by the 9th resistance；
Described control circuit includes Npn triode and has cn1 interface and the interface module of con2 interface,
The control end of described Npn triode is connected to described second comparison circuit, the output termination of described Npn triode
Ground, the input of described Npn triode is connected to described interface module；Described con2 interface is connected to described fan, described cn1
Interface is connected to described power supply circuits by the tenth resistance；
Described power supply circuits include the 4th diode and the 3rd electrochemical capacitor；
The positive pole of described 4th diode is connected to the 3rd terminals of described transforming circuit, described 4th diode negative
Pole is connected to the positive pole of described 3rd electrochemical capacitor, and the negative pole of described 3rd electrochemical capacitor is connected to the 4th of described transforming circuit
Terminals are simultaneously grounded.
This utility model further relates to a kind of Switching Power Supply, and it includes current rectifying and wave filtering circuit and is connected to described rectifying and wave-filtering electricity
The transforming circuit on road is it is characterised in that also include:
Fan control circuitry, it includes power supply circuits, the first comparison circuit, the second comparison circuit and control circuit；
Described power supply circuits, are connected to described transforming circuit；
Described first comparison circuit, is connected to described current rectifying and wave filtering circuit and described second comparison circuit, for described
The negative terminal voltage of the constant current sample resistance of current rectifying and wave filtering circuit is sampled computing and exports first voltage；
Described second comparison circuit, is connected to described control circuit；
Described control circuit is connected to fan.
In Switching Power Supply of the present utility model, what described first comparison circuit was included in a lm324 chip first compares
Device；
Wherein, the positive input of described first comparator is connected to the outfan of source of stable pressure and described by first resistor
The positive input of first comparator is grounded by second resistance, between the positive input of described first comparator and outfan
Series connection 3rd resistor, the negative input of described first comparator is connected to the negative of described constant current sample resistance by the 4th resistance
End, the outfan of described first comparator is connected to described second comparison circuit.
In Switching Power Supply of the present utility model, described current rectifying and wave filtering circuit include the first diode, the second diode,
3rd diode, the first electrochemical capacitor, the second electrochemical capacitor, electric capacity, described constant current sample resistance and varistor；
Wherein, described first diode and the second diodes in parallel, the positive pole of described first diode and the second diode
Common port is connected to the first terminals of described transforming circuit；Described first electrochemical capacitor and the second electrochemical capacitor are in parallel, described
The positive pole common port of the first electrochemical capacitor and the second electrochemical capacitor is connected to the negative pole of described first diode and the second diode
Common port and described varistor, the negative pole common port of described first electrochemical capacitor and the second electrochemical capacitor is connected to described transformation
Second terminals of circuit and described constant current sample resistance；One end of described electric capacity is connected to the described 1st by the 6th resistance
The positive pole common port of pole pipe and the second diode, the other end is connected to described first diode and the negative pole of the second diode is public
End；Described 3rd diode is connected to described varistor.
In Switching Power Supply of the present utility model, described second comparison circuit includes in lm324 chip described in second
Comparator and described source of stable pressure；
Wherein, described source of stable pressure is connected to described power supply circuits by the 7th resistance, and the outfan of described source of stable pressure connects
In the positive input of described second comparator, the negative input of described second comparator is connected to described by the 8th resistance
The positive input of first comparator, the power end of described second comparator is connected to described power supply circuits, and described second compares
The earth terminal ground connection of device, the outfan of described second comparator is connected to described control circuit by the 9th resistance.
In Switching Power Supply of the present utility model, model tl431 of described source of stable pressure.
In Switching Power Supply of the present utility model, described control circuit includes switching tube and has cn1 interface and con2
The interface module of interface；
The control end of described switching tube is connected to described second comparison circuit, and the output head grounding of described switching tube is described
The input of switching tube is connected to described interface module；Described con2 interface is connected to described fan, and described cn1 interface passes through the
Ten resistance are connected to described power supply circuits.
In Switching Power Supply of the present utility model, described switching tube is Npn triode.
In Switching Power Supply of the present utility model, described power supply circuits include the 4th diode and the 3rd electrochemical capacitor；
Wherein, the positive pole of the 4th diode is connected to the 3rd terminals of described transforming circuit, the negative pole of the 4th diode
It is connected to the positive pole of the 3rd electrochemical capacitor, the negative pole of the 3rd electrochemical capacitor is connected to the 4th terminals of described transforming circuit and connects
Ground.
Compared to the Switching Power Supply of prior art, the setting by fan control circuitry for the Switching Power Supply of the present utility model,
Avoid fan not do not charge or charging current little in the case of and heater members temperature very low in the case of fan still
So situation of work, thus reach the purpose of saves energy；Solve the technical problem of existing Switching Power Supply power consumption.
Brief description
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below in embodiment
The accompanying drawing of required use is briefly described.Drawings in the following description are only section Example of the present utility model, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the circuit diagram of the embodiment of Switching Power Supply of the present utility model；
Fig. 2 is the preferred embodiment structural representation of Switching Power Supply of the present utility model.
Specific embodiment
Refer to the schema in accompanying drawing, wherein identical element numbers represent identical assembly.The following description is to be based on
Illustrated this utility model specific embodiment, it is not construed as limiting this utility model other not detailed herein specifically in fact
Apply example.
Refer to Fig. 1, Fig. 1 is the circuit diagram of the embodiment of Switching Power Supply of the present utility model.Of the present utility model
Switching Power Supply 10 includes transforming circuit 11, current rectifying and wave filtering circuit 12 and fan control circuitry 13, and fan control circuitry 13 includes supplying
Circuit 131, the first comparison circuit 132, the second comparison circuit 133 and control circuit 134.
Current rectifying and wave filtering circuit 12 is connected to transforming circuit 11, for the photovoltaic conversion that exports transforming circuit 11 and to using
Electric equipment is powered；Power supply circuits 131 are connected to transforming circuit 11, for the first comparison circuit 132 and the second comparison circuit 133
Power supply；First comparison circuit 132 is connected to current rectifying and wave filtering circuit 12 and the second comparison circuit 133, for current rectifying and wave filtering circuit
The negative terminal voltage of 12 constant current sample resistance r5 is sampled computing and exports first voltage；Second comparison circuit 133 is connected to
Fan；Control circuit 134 is connected to fan, for controlling the on off state of fan.
It should be noted that draw the transforming circuit being connected with current rectifying and wave filtering circuit 12 and power supply circuits 131 in Fig. 1 being only
A part for transforming circuit 11.
Wherein, the first comparison circuit 132 includes first comparator u1d in a lm324 chip；First comparison circuit 132
In the positive input (12 foot) of first comparator u1d be connected to the outfan of tl431 source of stable pressure u2 by first resistor r1,
The positive input (12 foot) of first comparator u1d be grounded by second resistance r2 and first comparator u1d positive input
Connect between (12 foot) and outfan (14 foot) 3rd resistor r3, the negative input (13 foot) of first comparator u1d passes through the
Four resistance r4 are connected to the negative terminal of the constant current sample resistance r5 in current rectifying and wave filtering circuit 12, the outfan (14 of first comparator u1d
Foot) it is connected to the second comparison circuit 133；
Current rectifying and wave filtering circuit 12 includes the first diode d1, the second diode d2, the 3rd diode d3 the first electrochemical capacitor
Ce1, the second electrochemical capacitor ce2, electric capacity c1, constant current sample resistance r5 and varistor mov；
First diode d1 and the second diode d2 is in parallel, the positive pole common port of the first diode d1 and the second diode d2
It is connected to the first terminals 10 of transforming circuit 11；First electrochemical capacitor ce1 and the second electrochemical capacitor ce2 is in parallel, the first electrolysis
The negative pole that the positive pole common port of electric capacity ce1 and the second electrochemical capacitor ce2 is connected to the first diode d1 and the second diode d2 is public
End and varistor mov altogether, the negative pole common port of the first electrochemical capacitor ce1 and the second electrochemical capacitor ce2 is connected to transforming circuit
11 the second terminals 9 and constant current sample resistance r5；One end of electric capacity c1 is connected to the first diode d1 by the 6th resistance r6
With the positive pole common port of the second diode d2, the negative pole that the other end is connected to the first diode d1 and the second diode d2 is public
End；3rd diode d3 is connected to varistor mov；
Second comparison circuit 133 includes the second comparator u1a and tl431 source of stable pressure u2 in lm324 chip；
Tl431 source of stable pressure u2 is connected to power supply circuits 131 by the 7th resistance r7, and the outfan of tl431 source of stable pressure u2 is even
It is connected to the positive input (3 foot) of the second comparator u1a, the negative input (2 foot) of the second comparator u1a passes through the 8th resistance
R8 is connected to the outfan (14 foot) of first comparator u1d, and the power end (4 foot) of the second comparator u1a is connected to power supply circuits
Earth terminal (11 foot) ground connection of 131, the second comparator u1a, the outfan (1 foot) of the second comparator u1a passes through the 9th resistance r9
It is connected to control circuit 134；
Control circuit 134 includes Npn triode q1 and has the interface module 1341 of cn1 interface and con2 interface；
The control end of Npn triode q1 is connected to the second comparison circuit 133, the output head grounding of Npn triode q1, npn
The input of audion q1 is connected to interface module 1341；Con2 interface is connected to fan, and cn1 interface passes through the tenth resistance r10
It is connected to power supply circuits 131；
Power supply circuits 131 include the 4th diode d4 and the 3rd electrochemical capacitor ce3；
The positive pole of the 4th diode d4 is connected to the 3rd terminals 7 of transforming circuit 11, and the negative pole of the 4th diode d4 is even
It is connected to the positive pole of the 3rd electrochemical capacitor ce3, the negative pole of the 3rd electrochemical capacitor ce3 is connected to the 4th terminals 6 of transforming circuit 11
And be grounded.
It should be noted that first comparator u1d and the second comparator u1a are arranged among lm324 chip, and the two that
This is independent, and the present embodiment is 42v2a to the Constant Electric Current source value that electrical equipment is powered, i.e. the voltage of current rectifying and wave filtering circuit 12 output
For 42v, and the voltage of power supply circuits 131 output is 12v.
In addition, the 12v voltage of power supply circuits 131 output produces the benchmark electricity of 2.5v by the effect of tl431 source of stable pressure u2
Pressure, wherein, the reference voltage of 2.5v is connected to the positive input of first comparator (12 foot) and the forward direction of the second comparator is defeated
Enter end (3 foot).
The fan control principle of the present embodiment is:
First-selection, accesses external power source, sets to electricity consumption in the presence of external power source transforming circuit 11 and current rectifying and wave filtering circuit 12
Available electricity；
Simultaneously, power supply circuits 131 by the photovoltaic conversion in transforming circuit 11 and give the first comparison circuit 132 and second
Comparison circuit 133 is powered so that fan control circuitry overall work；
Then, the first comparison circuit 132 sample in resistance r5 negative terminal voltage access first comparator u1d negative sense defeated
Enter end (13 foot), access the positive input of first comparator simultaneously through the reference voltage that tl431 source of stable pressure u2 acts on and exports
(12 foot), after entering row operation in first comparator u1d, exports first voltage from outfan (14 foot)；
Then, first voltage accesses the negative input (2 foot) of the second comparator u1a, and same reference voltage accesses the
The positive input (3 foot) of two comparator u1a, and after the second comparator u1a comparison operation, export high from outfan (1 foot)
Level or low level；
Finally, when outfan (1 foot) output high level, Npn triode q1 turns on, and fan is started working, and works as outfan
During (1 foot) output low level, Npn triode q1 is ended, and fan quits work.
Complete the work process of fan.
The beneficial effect of the present embodiment is: the setting by fan control circuitry for the Switching Power Supply of the present embodiment, it is to avoid
Fan not do not charge or charging current little in the case of and heater members temperature very low in the case of fan still work
Situation, thus reaching the purpose of saves energy.
Refer to Fig. 2, Fig. 2 is the preferred embodiment structural representation of Switching Power Supply of the present utility model.This Switching Power Supply
20 it include transforming circuit 21, current rectifying and wave filtering circuit 22 and fan control circuitry 23, fan control circuitry 23 includes power supply circuits
231st, the first comparison circuit 232, the second comparison circuit 233 and control circuit 234.
Transforming circuit 21 is connected to current rectifying and wave filtering circuit 22；Current rectifying and wave filtering circuit 22 is connected to transforming circuit 21, for inciting somebody to action
Transforming circuit 21 output photovoltaic conversion and power to electrical equipment；Power supply circuits 231 are connected to transforming circuit 21, for becoming
The photovoltaic conversion of volt circuit 21 output and powering to the first comparison circuit 232 and the second comparison circuit 233；First comparison circuit
232 are connected to current rectifying and wave filtering circuit 22 and the second comparison circuit 233, for taking to the negative terminal voltage of current rectifying and wave filtering circuit 22
Sample computing and output first voltage；Second comparison circuit 223 is connected to control circuit 234, for being compared first voltage；
Control circuit 234 controls the on off state of fan.
Wherein, the circuit of the operation principle of the circuit structure of this preferred embodiment and fan control circuitry and above-described embodiment
The operation principle of structure and fan control circuitry is similar or identical, specifically refer to above-described embodiment.
In sum although this utility model is disclosed above with preferred embodiment, but above preferred embodiment is not used
To limit this utility model, those of ordinary skill in the art, without departing from spirit and scope of the present utility model, all can make
Various changes and retouching, protection domain therefore of the present utility model is defined by the scope that claim defines.
Claims (9)
1. a kind of Switching Power Supply, including current rectifying and wave filtering circuit and the transforming circuit being connected to described current rectifying and wave filtering circuit, its feature
It is, also include fan control circuitry, comprising: power supply circuits, the first comparison circuit, the second comparison circuit and control circuit；
Described power supply circuits, are connected to described transforming circuit, for powering to described first comparison circuit and the second comparison circuit；
Described first comparison circuit, is connected to described current rectifying and wave filtering circuit and the second comparison circuit, for described rectifying and wave-filtering
The negative terminal voltage of the constant current sample resistance of circuit is sampled computing and exports first voltage；
Described second comparison circuit, is connected to described control circuit；
Described control circuit, is connected to fan；
Wherein, described first comparison circuit includes the first comparator in a lm324 chip,
The positive input of described first comparator is connected to the outfan and described first of tl431 source of stable pressure by first resistor
The positive input of comparator is grounded by second resistance, connects between the positive input of described first comparator and outfan
3rd resistor, the negative input of described first comparator is connected to the negative terminal of described constant current sample resistance by the 4th resistance,
The outfan of described first comparator is connected to described second comparison circuit；
Described current rectifying and wave filtering circuit includes the first diode, the second diode, the 3rd diode, the first electrochemical capacitor, the second electricity
Solution electric capacity, electric capacity, described constant current sample resistance and varistor,
Described first diode and the second diodes in parallel, the positive pole common port of described first diode and the second diode connects
The first terminals in described transforming circuit；Described first electrochemical capacitor and the second electrochemical capacitor are in parallel, described first electrolysis electricity
Hold and the positive pole common port of the second electrochemical capacitor is connected to negative pole common port and the institute of described first diode and the second diode
State varistor, the negative pole common port of described first electrochemical capacitor and the second electrochemical capacitor is connected to the second of described transforming circuit
Terminals and described constant current sample resistance；One end of described electric capacity is connected to described first diode and second by the 6th resistance
The positive pole common port of diode, the other end is connected to the negative pole common port of described first diode and the second diode；Described
Three diodes are connected to described varistor；
Described second comparison circuit includes the second comparator and described tl431 source of stable pressure in described lm324 chip,
Described tl431 source of stable pressure is connected to described power supply circuits by the 7th resistance, and the outfan of described tl431 source of stable pressure connects
In the positive input of described second comparator, the negative input of described second comparator is connected to described by the 8th resistance
The positive input of first comparator, the power end of described second comparator is connected to described power supply circuits, and described second compares
The earth terminal ground connection of device, the outfan of described second comparator is connected to described control circuit by the 9th resistance；
Described control circuit includes Npn triode and has cn1 interface and the interface module of con2 interface,
The control end of described Npn triode is connected to described second comparison circuit, the output head grounding of described Npn triode, institute
The input stating Npn triode is connected to described interface module；Described con2 interface is connected to described fan, described cn1 interface
Described power supply circuits are connected to by the tenth resistance；
Described power supply circuits include the 4th diode and the 3rd electrochemical capacitor；
The positive pole of described 4th diode is connected to the 3rd terminals of described transforming circuit, and the negative pole of described 4th diode is even
It is connected to the positive pole of described 3rd electrochemical capacitor, the negative pole of described 3rd electrochemical capacitor is connected to the 4th wiring of described transforming circuit
Hold and be grounded.
2. a kind of Switching Power Supply, it includes current rectifying and wave filtering circuit and is connected to the transforming circuit of described current rectifying and wave filtering circuit, and it is special
Levy and be, also include:
Fan control circuitry, comprising: power supply circuits, the first comparison circuit, the second comparison circuit and control circuit；
Described power supply circuits, are connected to described transforming circuit；
Described first comparison circuit, is connected to described current rectifying and wave filtering circuit and described second comparison circuit, for described rectification
The negative terminal voltage of the constant current sample resistance of filter circuit is sampled computing and exports first voltage；
Described second comparison circuit, is connected to described control circuit；
Described control circuit is connected to fan.
3. Switching Power Supply according to claim 2 is it is characterised in that described first comparison circuit includes a lm324 chip
In first comparator；
Wherein, the positive input of described first comparator is connected to the outfan and described first of source of stable pressure by first resistor
The positive input of comparator is grounded by second resistance, connects between the positive input of described first comparator and outfan
3rd resistor, the negative input of described first comparator is connected to the negative terminal of described constant current sample resistance by the 4th resistance,
The outfan of described first comparator is connected to described second comparison circuit.
4. Switching Power Supply according to claim 3 it is characterised in that described current rectifying and wave filtering circuit include the first diode,
Second diode, the 3rd diode, the first electrochemical capacitor, the second electrochemical capacitor, electric capacity, described constant current sample resistance and pressure-sensitive electricity
Resistance；
Wherein, described first diode and the second diodes in parallel, the positive pole of described first diode and the second diode is public
End is connected to the first terminals of described transforming circuit；Described first electrochemical capacitor and the second electrochemical capacitor are in parallel, and described first
The positive pole common port of electrochemical capacitor and the second electrochemical capacitor is connected to described first diode and the negative pole of the second diode is public
End and described varistor, the negative pole common port of described first electrochemical capacitor and the second electrochemical capacitor is connected to described transforming circuit
The second terminals and described constant current sample resistance；One end of described electric capacity is connected to described first diode by the 6th resistance
With the positive pole common port of the second diode, the other end is connected to the negative pole common port of described first diode and the second diode；
Described 3rd diode is connected to described varistor.
5. Switching Power Supply according to claim 3 is it is characterised in that described second comparison circuit includes lm324 described in
The second comparator in chip and described source of stable pressure；
Wherein, described source of stable pressure is connected to described power supply circuits by the 7th resistance, and the outfan of described source of stable pressure is connected to institute
State the positive input of the second comparator, the negative input of described second comparator is connected to described first by the 8th resistance
The positive input of comparator, the power end of described second comparator is connected to described power supply circuits, described second comparator
Earth terminal is grounded, and the outfan of described second comparator is connected to described control circuit by the 9th resistance.
6. Switching Power Supply according to claim 5 is it is characterised in that model tl431 of described source of stable pressure.
7. Switching Power Supply according to claim 5 is it is characterised in that described control circuit includes switching tube and has
Cn1 interface and the interface module of con2 interface；
The control end of described switching tube is connected to described second comparison circuit, the output head grounding of described switching tube, described switch
The input of pipe is connected to described interface module；Described con2 interface is connected to described fan, and described cn1 interface passes through the tenth electricity
Resistance is connected to described power supply circuits.
8. Switching Power Supply according to claim 7 is it is characterised in that described switching tube is Npn triode.
9. Switching Power Supply according to claim 7 is it is characterised in that described power supply circuits include the 4th diode and the 3rd
Electrochemical capacitor；
Wherein, the positive pole of the 4th diode is connected to the 3rd terminals of described transforming circuit, and the negative pole of the 4th diode connects
In the positive pole of the 3rd electrochemical capacitor, the negative pole of the 3rd electrochemical capacitor is connected to the 4th terminals of described transforming circuit and is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620850246.2U CN205911960U (en) | 2016-08-08 | 2016-08-08 | Switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620850246.2U CN205911960U (en) | 2016-08-08 | 2016-08-08 | Switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205911960U true CN205911960U (en) | 2017-01-25 |
Family
ID=57803360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620850246.2U Expired - Fee Related CN205911960U (en) | 2016-08-08 | 2016-08-08 | Switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205911960U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108540111A (en) * | 2018-02-09 | 2018-09-14 | 上海与德科技有限公司 | Pressure detection circuit and electronic equipment |
-
2016
- 2016-08-08 CN CN201620850246.2U patent/CN205911960U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108540111A (en) * | 2018-02-09 | 2018-09-14 | 上海与德科技有限公司 | Pressure detection circuit and electronic equipment |
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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 |
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