CN201018420Y - Power supply apparatus based on optoelectronic coupling isolation delayed control circuit - Google Patents
Power supply apparatus based on optoelectronic coupling isolation delayed control circuit Download PDFInfo
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- CN201018420Y CN201018420Y CNU2007201182089U CN200720118208U CN201018420Y CN 201018420 Y CN201018420 Y CN 201018420Y CN U2007201182089 U CNU2007201182089 U CN U2007201182089U CN 200720118208 U CN200720118208 U CN 200720118208U CN 201018420 Y CN201018420 Y CN 201018420Y
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- control circuit
- diode
- triode
- photoelectrical coupler
- delay control
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Abstract
The utility model provides a power supply device based on a photocoupling isolated delay control circuit, which comprises an isolated control circuit as the first end, a delay control circuit as the second end and a photocoupler with a light-emitting diode and a light-emitting triode; wherein the isolated control circuit is connected with the delay control circuit through the photocoupler. The utility model realizes the delay isolation control of the whole power supply circuit through the photocoupler in order to make the high-voltage load have the enough preheating time, which improves the performance of the whole circuit, prolongs the service life of the high-voltage elements; therefore, the utility model can reduce the cost and the power consumption through the photocoupler.
Description
[technical field]
The utility model relates to the control circuit field of AC and DC converting power source device, particularly a kind of supply unit based on photoelectricity coupling isolation delay control circuit.
[background technology]
Be to adopt different supply units and voltage in several modes to form in the power-supply system, the output of the supply unit that has needs control chronologically, particularly in the conversion equipment of AC-to DC, also needs isolation safe control.
Please refer to Fig. 1, is a kind of ac/dc conversion power source device electrical block diagram of prior art.This AC/DC converting circuit 300 comprises transformer T1, high-voltage rectifying filter 34, switching power converter 32, rectification/filter 31, pulse width modulator (PWM) 33 and delay control circuit 35, the input input 220V alternating voltage of this rectifier filter 31, these rectifier filter 31 outputs connect the 3rd input of this transformer T1, this pulse width modulator 33 connects the 1st input of this transformer T1 by this switching power converter 32, this pulse width modulator 33 connects the 2nd input of this transformer T1, and this pulse width modulator 33 connects the 4th input of this transformer T1 by this delay control circuit 35 simultaneously.The 5th, 6,7 of this transformer T1 is connected this high-voltage rectifying filter 34 with 8 outputs, these high-voltage rectifying filter 34 output dc high voltages.This delay control circuit 35 adopts the open and close of relay J 1 control circuit, but these relay J 1 frequent open and close can make reduce its useful life, power consumption is big and cost is high, and are easy to cause high-voltage load warm-up time not enough and cause the high-voltage load device failure.
[utility model content]
In order to adopt relay control lag circuit to cause the not enough and defective that causes load to damage high-voltage load warm-up time easily in the supply unit that solves prior art, the utility model provide a kind of warm-up time long enough and the supply unit of delay control circuit is isolated in the coupling based on photoelectricity that can not cause load to damage.
The utility model solves the prior art problem, the technical scheme that is adopted provides a kind of supply unit based on photoelectricity coupling isolation delay control circuit, it comprises isolation control circuit as end once, as the delay control circuit of secondary terminals with have light-emitting diode and the photoelectrical coupler of triode, this isolation control circuit and this delay control circuit are of coupled connections by this photoelectrical coupler.
The utility model based on the further improvement of the supply unit of photoelectricity coupling isolation delay control circuit is: when the control end signal of this delay control circuit arrives, light-emitting diode in this photoelectrical coupler is not luminous, make the triode in this photoelectrical coupler be in cut-off state, luminous after the light-emitting diode conducting in this photoelectrical coupler after a while, triode in this photoelectrical coupler changes saturation conduction over to by ending, and this isolation control circuit is started working.
The utility model based on the further improvement of the supply unit of photoelectricity coupling isolation delay control circuit is: this isolation control circuit comprises the 3rd diode, the 4th diode and first resistance, the emitter of the triode in this photoelectrical coupler connects the anode of the 3rd diode and the 4th diode, the negative electrode of the collector electrode of the triode in this photoelectrical coupler and the 4th diode is connected extraneous transformer, and the negative electrode of the 3rd diode connects extraneous pulse width modulator by this first resistance.
The utility model based on the further improvement of the supply unit of photoelectricity coupling isolation delay control circuit is: this delay control circuit comprises first triode, second resistance, the 3rd resistance, the 4th resistance, the 3rd electric capacity and the 5th diode, the anode of the 3rd electric capacity connects control end, and connect the anode of light-emitting diode in the collector electrode of this first triode and this photoelectrical coupler by this second resistance, the negative electrode of the 3rd electric capacity connects the negative electrode of the 5th diode, and connects the base stage of this first triode by the 4th resistance; The negative electrode of light-emitting diode in this photoelectrical coupler, the emitter of the anode of the five or two utmost point and this first triode is ground connection respectively, connect the 3rd resistance between the base stage of this first triode and the emitter, when the control end signal arrives, the charging of the 3rd electric capacity, this first triode is in the saturation conduction state, this photoelectrical coupler is in clamping state, triode in this photoelectrical coupler ends, after the charging of the 3rd electric capacity is finished, this first triode is changed over to by saturation conduction and ends, then luminous after the light-emitting diode conducting in this photoelectrical coupler, the triode in this photoelectrical coupler changes saturation conduction over to by ending.
The utility model based on the further improvement of the supply unit of photoelectricity coupling isolation delay control circuit is: comprise auxiliary power circuit, and this auxiliary power circuit incoming transport power supply, and offer extraneous pulse width modulator and high-voltage rectifying filter circuit.
The utility model based on the further improvement of the supply unit of photoelectricity coupling isolation delay control circuit is: this auxiliary power circuit comprises first diode, second diode, first electric capacity and second electric capacity, the anode of this second electric capacity connects the negative electrode of this first resistance and this second diode, and the negative electrode of this second electric capacity connects anode and this AC power zero line input of first diode; The negative electrode of this first diode connects the anode of this second diode and connects AC power live wire input by this first electric capacity.
Compared to prior art, adopt photoelectrical coupler to realize the delay isolated controlling of whole power circuit in the supply unit of the utility model based on photoelectricity coupling isolation delay control circuit, thereby reach high-voltage load and have enough warm-up time, improve the performance of entire circuit, prolong circuit useful life, and adopt photoelectrical coupler to reduce cost, reduce power consumption and use.
[description of drawings]
Fig. 1 is a kind of ac/dc conversion power source device electrical block diagram of prior art;
Fig. 2 is the utility model is applied to AC/DC converting circuit based on the supply unit of photoelectricity coupling isolation delay control circuit a structural representation.
[embodiment]
Below in conjunction with drawings and Examples the utility model is further specified.
Please refer to Fig. 2, is the utility model is applied to AC/DC converting circuit based on the supply unit of photoelectricity coupling isolation delay control circuit structural representation.The utility model based on the basic principle of the supply unit of photoelectricity coupling isolation delay control circuit is: utilize photoelectric coupler isolation, be implemented in secondary terminals and postpone control, and reach once the isolated controlling of end and secondary terminals.This power supply internal communication/DC converting circuit 400 comprises transformer T11, rectification/filter 41, switching power converter 42, pulse width modulator 43, high-voltage rectifying filter 44, auxiliary power circuit 45, as the isolation control circuit 46 of end once, as the delay control circuit 47 and the photoelectrical coupler U1 of secondary terminals.The input input 220V alternating voltage of this rectifier filter 41, these rectifier filter 41 outputs connect the 3rd input of this transformer T11, this pulse width modulator 43 connects the 1st input of this transformer T11 by this switching power converter 42, this pulse width modulator 43 connects the 2nd input of this transformer T11, this pulse width modulator 43 connects the 4th input of this transformer T11 by this isolation control circuit 46 simultaneously, this delay control circuit 47 is of coupled connections with this isolation control circuit 46, by the purpose of these delay control circuit 47 these power supply internal communication/DC converting circuit 400 delay starts of control.The 5th, 6,7 of this transformer T11 is connected this high-voltage rectifying filter 44 with 8 outputs, these high-voltage rectifying filter 44 output dc high voltages.
This auxiliary power circuit 45 comprises the first diode D11, the second diode D12, first capacitor C 11 and second capacitor C 12, the anode that the negative electrode of this second capacitor C 12 connects this first diode D11 is connected with AC power zero line input N and with the 2nd input (self-supporting power auxiliary winding earth terminal) of this transformer T11, and earth terminal voltage is self-defined zero-point voltage.The anode of this second diode D12 connects the negative electrode of this first diode D11, and connects live wire ac power input end L by this first capacitor C 11.
This isolation control circuit 46 comprises the 3rd diode D13, the 4th diode D14 and first resistance R 11, the emitter of the triode among this photoelectrical coupler U1 connects the anode of the 3rd diode D13 and the 4th diode D14, and the collector electrode of the triode among this photoelectrical coupler U1 is connected the 4th input (hot junction of self-supporting power auxiliary winding) of this transformer T11 with the negative electrode of the 4th diode D14.The negative electrode of the 3rd diode D13 connects the anode of this second capacitor C 12 and the feeder ear+Vcc of this pulse width modulator 43 by this first resistance R 11.
This delay control circuit 47 comprises the first triode Q11, second resistance R 12, the 3rd resistance R 13, the 4th resistance R 14, the 3rd capacitor C 13 and the 5th diode D15, the anode of the 3rd capacitor C 13 connects control end PG (Power Good, represent that promptly power supply is ready), and connect the anode of light-emitting diode among the collector electrode of this triode Q1 and this photoelectrical coupler U1 by this second resistance R 12, the negative electrode of the 3rd capacitor C 13 connects the negative electrode of the 5th diode D15, and connects the base stage of this first triode Q11 by the 4th resistance R 14; The emitter of the anode of the negative electrode of light-emitting diode, the 5th diode D15 and this first triode Q11 difference ground connection connects the 3rd resistance R 13 among this photoelectrical coupler U1 between the base stage of this first triode Q11 and the emitter.
The course of work of this power supply internal communication/DC converting circuit 400 is: when the magnitude of voltage of the feeder ear+Vcc of this pulse width modulator 43 during less than threshold voltage, this pulse width modulator 43 is in closed condition, when the magnitude of voltage of+Vcc is greater than or equal to threshold voltage, this pulse width modulator 43 is in running order, and these switching power converter 42 output high pressure are given load.The course of work of this delay control circuit 47 is: when control end PG signal arrives, 13 chargings of the 3rd capacitor C, this first triode Q11 is in the saturation conduction state, this photoelectrical coupler U1 is in clamper in the low pressure below 1 volt, light-emitting diode among this photoelectrical coupler U1 is not luminous, make the triode among this photoelectrical coupler U1 be in cut-off state, after 13 chargings of the 3rd capacitor C are finished, this first triode Q11 is changed over to by saturation conduction and ends, then luminous after the light-emitting diode conducting among this photoelectrical coupler U1, triode among this photoelectrical coupler U1 changes saturation conduction over to by ending, start this pulse width modulator 43 work then, reach the delay purpose of opening.
Compared to prior art, adopt photoelectrical coupler U1 to realize the delay isolated controlling of whole power circuit in the supply unit of the utility model based on photoelectricity coupling isolation delay control circuit, thereby reach high-voltage load and have enough warm-up time, improve the performance of entire circuit, prolong high tension apparatus useful life, and adopt photoelectrical coupler U1 to reduce cost, reduce power consumption and use.
Above-mentioned detailed description only is exemplary description, and those skilled in the art can design various execution modes according to different actual needs under the situation that does not break away from the scope and spirit that the utility model protects.
Claims (6)
1. supply unit of isolating delay control circuit based on photoelectricity coupling, it is characterized in that: comprise isolation control circuit as end once, as the delay control circuit of secondary terminals with have light-emitting diode and the photoelectrical coupler of triode, this isolation control circuit and this delay control circuit are of coupled connections by this photoelectrical coupler.
2. the supply unit based on photoelectricity coupling isolation delay control circuit according to claim 1, it is characterized in that: when the control end signal of this delay control circuit arrives, light-emitting diode in this photoelectrical coupler is not luminous, make the triode in this photoelectrical coupler be in cut-off state, luminous after the light-emitting diode conducting in this photoelectrical coupler after a while, triode in this photoelectrical coupler changes saturation conduction over to by ending, and this isolation control circuit is started working.
3. the supply unit based on photoelectricity coupling isolation delay control circuit according to claim 1, it is characterized in that: this isolation control circuit comprises the 3rd diode, the 4th diode and first resistance, the emitter of the triode in this photoelectrical coupler connects the anode of the 3rd diode and the 4th diode, the negative electrode of the collector electrode of the triode in this photoelectrical coupler and the 4th diode is connected extraneous transformer, and the negative electrode of the 3rd diode connects extraneous pulse width modulator by this first resistance.
4. the supply unit based on photoelectricity coupling isolation delay control circuit according to claim 1, it is characterized in that: this delay control circuit comprises first triode, second resistance, the 3rd resistance, the 4th resistance, the 3rd electric capacity and the 5th diode, the anode of the 3rd electric capacity connects control end, and connect the anode of light-emitting diode in the collector electrode of this first triode and this photoelectrical coupler by this second resistance, the negative electrode of the 3rd electric capacity connects the negative electrode of the 5th diode, and connects the base stage of this first triode by the 4th resistance; The negative electrode of light-emitting diode in this photoelectrical coupler, the emitter of the anode of the five or two utmost point and this first triode is ground connection respectively, connect the 3rd resistance between the base stage of this first triode and the emitter, when the control end signal arrives, the charging of the 3rd electric capacity, this first triode is in the saturation conduction state, this photoelectrical coupler is in clamping state, triode in this photoelectrical coupler ends, after the charging of the 3rd electric capacity is finished, this first triode is changed over to by saturation conduction and ends, then luminous after the light-emitting diode conducting in this photoelectrical coupler, the triode in this photoelectrical coupler changes saturation conduction over to by ending.
5. the supply unit based on photoelectricity coupling isolation delay control circuit according to claim 1, it is characterized in that: comprise auxiliary power circuit, this auxiliary power circuit incoming transport power supply, and offer extraneous pulse width modulator and high-voltage rectifying filter circuit.
6. the supply unit based on photoelectricity coupling isolation delay control circuit according to claim 5, it is characterized in that: this auxiliary power circuit comprises first diode, second diode, first electric capacity and second electric capacity, the anode of this second electric capacity connects the negative electrode of this first resistance and this second diode, and the negative electrode of this second electric capacity connects anode and this AC power zero line input of first diode; The negative electrode of this first diode connects the anode of this second diode and connects AC power live wire input by this first electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201182089U CN201018420Y (en) | 2007-01-19 | 2007-01-19 | Power supply apparatus based on optoelectronic coupling isolation delayed control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201182089U CN201018420Y (en) | 2007-01-19 | 2007-01-19 | Power supply apparatus based on optoelectronic coupling isolation delayed control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201018420Y true CN201018420Y (en) | 2008-02-06 |
Family
ID=39058919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201182089U Expired - Fee Related CN201018420Y (en) | 2007-01-19 | 2007-01-19 | Power supply apparatus based on optoelectronic coupling isolation delayed control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201018420Y (en) |
-
2007
- 2007-01-19 CN CNU2007201182089U patent/CN201018420Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080206 Termination date: 20110119 |