CN104410296A - Logic control circuit based power source for power system fault detection device - Google Patents
Logic control circuit based power source for power system fault detection device Download PDFInfo
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- CN104410296A CN104410296A CN201410675257.7A CN201410675257A CN104410296A CN 104410296 A CN104410296 A CN 104410296A CN 201410675257 A CN201410675257 A CN 201410675257A CN 104410296 A CN104410296 A CN 104410296A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Abstract
The invention discloses a logic control circuit based power source for a power system fault detection device. The power source mainly comprises a transformer diode trigger circuit, a power logic control circuit, a primary crystal oscillating circuit and a secondary crystal oscillating circuit, wherein the primary crystal oscillating circuit and the secondary crystal oscillating circuit are connected with the transformer diode trigger circuit. The power source is characterized by further comprises a power logic control circuit connected with the transformer diode trigger circuit, the transformer diode trigger circuit comprises a diode rectifier U, a transformer T and a trigger circuit, and the primary crystal oscillating circuit and the secondary crystal oscillating circuit are both connected with the trigger circuit . The logic control circuit based power source has the advantages that circuit structures can be greatly simplified to reduce intrinsic and external radio-frequency interference for the circuits, and accordingly manufacturing cost and maintenance cost are greatly reduced; in addition, delay effects of traditional power circuits can be overcome effectively, and quality of the power source can be effectively improved.
Description
Technical field
The present invention relates to a kind of switching power supply, specifically refer to a kind of electric power system fault detection device power supply of logic-based control circuit.
Background technology
At present, along with the develop rapidly of power industry, the equipment that people are used for Power System Faults Detection also has great development.Because the maintenance of electric power system often relates to hundreds of kilovolt, the even voltage circuit of up to a million kilovolts, therefore its maintenance circuit is very long, so also very high to the power reguirements of fault test set.But, but larger ripple coefficient is there is in current people to the portable power source that fault test set provides, not only can produce radio-frequency electromagnetic interference, and its circuit structure more complicated, maintenance and cost of manufacture are higher, therefore greatly limit the scope of application of fault test set, be unfavorable for that people check on a large scale to circuit.
Summary of the invention
The object of the invention is to the defect that ripple coefficient is comparatively large, radio frequency interference is serious, circuit is complicated and efficiency is not high overcoming the existence of current fault test set power supply, a kind of electric power system fault detection device power supply of brand-new logic-based control circuit is provided.
Object of the present invention is achieved through the following technical solutions: a kind of electric power system fault detection device power supply of logic-based control circuit, primarily of transformer diode triggered circuit, and the crystal oscillating circuit to be connected with this transformer diode triggered circuit and secondary crystal oscillating circuit form, meanwhile, the logical power control circuit be connected with transformer diode triggered circuit is also provided with.
Described transformer diode triggered circuit is made up of diode rectifier U, transformer T and circuits for triggering, and this crystal oscillating circuit is then all connected with circuits for triggering with secondary crystal oscillating circuit, described logical power control circuit is by power amplifier P1, NAND gate IC1, NAND gate IC2, NAND gate IC3, NAND gate IC4, N pole is connected with the output of power amplifier P1, the diode D5 of P pole ground connection after resistance R11, one end is connected with the first input end of NAND gate IC1, the resistance R5 that the other end is connected with the output of NAND gate IC2 after electric capacity C7, one end is connected with the output of NAND gate IC1, the resistance R6 that the other end is connected with the tie point of electric capacity C7 with resistance R5, one end is connected with the output of NAND gate IC3, the resistance R7 that the other end is connected with the output of NAND gate IC4 after resistance R8, and one end is connected with the end of oppisite phase of power amplifier P1, the resistance R12 of other end ground connection forms, second input end grounding of described NAND gate IC1, its output is also connected with the first input end of NAND gate IC2, second input of NAND gate IC2 is connected with the in-phase end of power amplifier P1, its output is then connected with second input of NAND gate IC4 with the first input end of NAND gate IC3 respectively, and second input of NAND gate IC3 is connected with the first input end of NAND gate IC4, the in-phase end of described power amplifier P1 is connected with transformer T-phase, and its output is connected with circuits for triggering, and resistance R7 is also all connected with these circuits for triggering with the tie point of resistance R8.
Further, described transformer T is made up of primary coil L1, secondary coil L2 and secondary coil L3, and this primary coil L1 is connected with cathode output end with the cathode output end of diode rectifier U, described circuits for triggering are then connected with secondary coil L3 with secondary coil L2 simultaneously, and the in-phase end of power amplifier P1 is then connected with the non-same polarity of secondary coil L3.
Described circuits for triggering are by transistor Q1, transistor Q2, one end is connected with the base stage of transistor Q1, the resistance R3 that the other end is connected with the base stage of transistor Q2 after resistance R4, one end is connected with the collector electrode of transistor Q1, the resistance R1 that the other end is connected with the base stage of transistor Q2, the electric capacity C5 be in parallel with resistance R1, one end is connected with the collector electrode of transistor Q2, the resistance R2 that the other end is connected with the base stage of transistor Q1, the electric capacity C6 be in parallel with resistance R2, N pole is connected with the base stage of transistor Q1, the diode D2 that P pole is connected with the non-same polarity of secondary coil L2, P pole is connected with the non-same polarity of secondary coil L2, the diode D1 that N pole is connected with the emitter of transistor Q1, N pole is connected with the base stage of transistor Q2, the diode D3 that P pole is connected with the Same Name of Ends of secondary coil L3, and P pole is connected with the Same Name of Ends of secondary coil L3, the diode D4 that N pole is connected with the emitter of transistor Q2 forms, the emitter of described transistor Q1 is also connected rear ground connection, the grounded emitter of described transistor Q2 with the Same Name of Ends of secondary coil L2, the output of described power amplifier P1 is then connected with the tie point of resistance R4 with resistance R3, and resistance R7 is then connected with the emitter of transistor Q2 with the tie point of resistance R8.
A described crystal oscillating circuit is by inverting amplifier U1, be serially connected in the resistance R9 between the input of inverting amplifier U1 and output and quartz oscillator X1, the electric capacity C1 that positive pole is connected with the input of inverting amplifier U1, negative pole is connected with the collector electrode of transistor Q1, and the tunable capacitor C2 that positive pole is connected with the output of inverting amplifier U1, negative pole is connected with the base stage of transistor Q2 forms; Described secondary crystal oscillating circuit is by inverting amplifier U2, be serially connected in the resistance R10 between the input of inverting amplifier U2 and output and quartz oscillator X2, the tunable capacitor C4 that positive pole is connected with the input of inverting amplifier U2, negative pole is connected with the collector electrode of transistor Q2, and the electric capacity C3 that positive pole is connected with the output of inverting amplifier U2, negative pole is connected with the base stage of transistor Q1 forms.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) the present invention can simplify circuit structure greatly, reduces circuit self and external radio frequency interference, cost of manufacture and maintenance cost are had reduction by a relatively large margin.
(2) the present invention effectively can overcome the late effect of conventional power source circuit, effectively can improve the quality of power supply.
(3) scope of application of the present invention is comparatively wide, can be applicable to the fault detect environment of different occasion.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the present invention is primarily of transformer diode triggered circuit, the crystal oscillating circuit be connected with this transformer diode triggered circuit and secondary crystal oscillating circuit, and the logical power control circuit be connected with transformer diode triggered circuit forms.Wherein, described transformer diode triggered circuit is made up of diode rectifier U, transformer T and circuits for triggering, and one time crystal oscillating circuit is then all connected with circuits for triggering with secondary crystal oscillating circuit.
Described logical power control circuit is by power amplifier P1, NAND gate IC1, NAND gate IC2, NAND gate IC3, NAND gate IC4, and diode D5, electric capacity C7, resistance R5, resistance R6, resistance R7, resistance R8, resistance R11 and resistance R12 form.During connection, the N pole of diode D5 is connected with the output of power amplifier P1, its P pole ground connection after resistance R11; One end of resistance R5 is connected with the first input end of NAND gate IC1, and its other end is connected with the output of NAND gate IC2 after electric capacity C7; One end of resistance R6 is connected with the output of NAND gate IC1, and its other end is connected with the tie point of electric capacity C7 with resistance R5.
One end of resistance R7 is connected with the output of NAND gate IC3, and its other end is connected with the output of NAND gate IC4 after resistance R8; And one end of resistance R12 is connected with the end of oppisite phase of power amplifier P1, its other end then ground connection.
Second input end grounding of described NAND gate IC1, its output is also connected with the first input end of NAND gate IC2; Second input of NAND gate IC2 is connected with the in-phase end of power amplifier P1, and its output is then connected with second input of NAND gate IC4 with the first input end of NAND gate IC3 respectively.Second input of described NAND gate IC3 is connected with the first input end of NAND gate IC4.
Described transformer T is made up of primary coil L1, secondary coil L2 and secondary coil L3, and this primary coil L1 is connected with cathode output end with the cathode output end of diode rectifier U, the in-phase end of power amplifier P1 is then connected with the non-same polarity of secondary coil L3.
Described circuits for triggering are by transistor Q1, and transistor Q2, resistance R1, resistance R2, electric capacity C5, electric capacity C6, resistance R3, resistance R4, and diode D1, diode D2, diode D3 and diode D4 form.During connection, one end of resistance R3 is connected with the base stage of transistor Q1, and its other end is connected with the base stage of transistor Q2 after resistance R4; One end of resistance R1 is connected with the collector electrode of transistor Q1, and the other end is connected with the base stage of transistor Q2, and electric capacity C5 and resistance R1 is in parallel; One end of resistance R2 is connected with the collector electrode of transistor Q2, and its other end is connected with the base stage of transistor Q1, and electric capacity C6 is then in parallel with resistance R2.
The N pole of described diode D2 is connected with the base stage of transistor Q1, and its P pole is connected with the non-same polarity of secondary coil L2; The P pole of diode D1 is connected with the non-same polarity of secondary coil L2, and its N pole is connected with the emitter of transistor Q1; The N pole of diode D3 is connected with the base stage of transistor Q2, and its P pole is connected with the Same Name of Ends of secondary coil L3; The P pole of diode D4 is connected with the Same Name of Ends of secondary coil L3, and its N pole is connected with the emitter of transistor Q2.
Meanwhile, the emitter of described transistor Q1 is also connected rear ground connection with the Same Name of Ends of secondary coil L2, the emitter then direct ground connection of described transistor Q2.The output of power amplifier P1 is then connected with the tie point of resistance R4 with resistance R3, and resistance R7 is then connected with the emitter of transistor Q2 with the tie point of resistance R8.
A described crystal oscillating circuit is by inverting amplifier U1, be serially connected in the resistance R9 between the input of inverting amplifier U1 and output and quartz oscillator X1, the electric capacity C1 that positive pole is connected with the input of inverting amplifier U1, negative pole is connected with the collector electrode of transistor Q1, and the tunable capacitor C2 that positive pole is connected with the output of inverting amplifier U1, negative pole is connected with the base stage of transistor Q2 forms.
Described secondary crystal oscillating circuit is by inverting amplifier U2, be serially connected in the resistance R10 between the input of inverting amplifier U2 and output and quartz oscillator X2, the tunable capacitor C4 that positive pole is connected with the input of inverting amplifier U2, negative pole is connected with the collector electrode of transistor Q2, and the electric capacity C3 that positive pole is connected with the output of inverting amplifier U2, negative pole is connected with the base stage of transistor Q1 forms.
For guaranteeing result of use, this electric capacity C1, electric capacity C3, electric capacity C5, electric capacity C6 and electric capacity C7 all preferentially adopt patch capacitor to realize.
As mentioned above, just the present invention can well be realized.
Claims (4)
1. the electric power system fault detection device power supply of a logic-based control circuit, primarily of transformer diode triggered circuit, and the crystal oscillating circuit to be connected with this transformer diode triggered circuit and secondary crystal oscillating circuit form, it is characterized in that, also be provided with the logical power control circuit be connected with transformer diode triggered circuit, described transformer diode triggered circuit is made up of diode rectifier U, transformer T and circuits for triggering, and this crystal oscillating circuit is then all connected with circuits for triggering with secondary crystal oscillating circuit, described logical power control circuit is by power amplifier P1, NAND gate IC1, NAND gate IC2, NAND gate IC3, NAND gate IC4, N pole is connected with the output of power amplifier P1, the diode D5 of P pole ground connection after resistance R11, one end is connected with the first input end of NAND gate IC1, the resistance R5 that the other end is connected with the output of NAND gate IC2 after electric capacity C7, one end is connected with the output of NAND gate IC1, the resistance R6 that the other end is connected with the tie point of electric capacity C7 with resistance R5, one end is connected with the output of NAND gate IC3, the resistance R7 that the other end is connected with the output of NAND gate IC4 after resistance R8, and one end is connected with the end of oppisite phase of power amplifier P1, the resistance R12 of other end ground connection forms, second input end grounding of described NAND gate IC1, its output is also connected with the first input end of NAND gate IC2, second input of NAND gate IC2 is connected with the in-phase end of power amplifier P1, its output is then connected with second input of NAND gate IC4 with the first input end of NAND gate IC3 respectively, and second input of NAND gate IC3 is connected with the first input end of NAND gate IC4, the in-phase end of described power amplifier P1 is connected with transformer T-phase, and its output is connected with circuits for triggering, and resistance R7 is also all connected with these circuits for triggering with the tie point of resistance R8.
2. the electric power system fault detection device power supply of a kind of logic-based control circuit according to claim 1, it is characterized in that, described transformer T is made up of primary coil L1, secondary coil L2 and secondary coil L3, and this primary coil L1 is connected with cathode output end with the cathode output end of diode rectifier U, described circuits for triggering are then connected with secondary coil L3 with secondary coil L2 simultaneously, and the in-phase end of power amplifier P1 is then connected with the non-same polarity of secondary coil L3.
3. the electric power system fault detection device power supply of a kind of logic-based control circuit according to claim 2, it is characterized in that, described circuits for triggering are by transistor Q1, transistor Q2, one end is connected with the base stage of transistor Q1, the resistance R3 that the other end is connected with the base stage of transistor Q2 after resistance R4, one end is connected with the collector electrode of transistor Q1, the resistance R1 that the other end is connected with the base stage of transistor Q2, the electric capacity C5 be in parallel with resistance R1, one end is connected with the collector electrode of transistor Q2, the resistance R2 that the other end is connected with the base stage of transistor Q1, the electric capacity C6 be in parallel with resistance R2, N pole is connected with the base stage of transistor Q1, the diode D2 that P pole is connected with the non-same polarity of secondary coil L2, P pole is connected with the non-same polarity of secondary coil L2, the diode D1 that N pole is connected with the emitter of transistor Q1, N pole is connected with the base stage of transistor Q2, the diode D3 that P pole is connected with the Same Name of Ends of secondary coil L3, and P pole is connected with the Same Name of Ends of secondary coil L3, the diode D4 that N pole is connected with the emitter of transistor Q2 forms, the emitter of described transistor Q1 is also connected rear ground connection, the grounded emitter of described transistor Q2 with the Same Name of Ends of secondary coil L2, the output of described power amplifier P1 is then connected with the tie point of resistance R4 with resistance R3, and resistance R7 is then connected with the emitter of transistor Q2 with the tie point of resistance R8.
4. the electric power system fault detection device power supply of a kind of logic-based control circuit according to claim 3, it is characterized in that, a described crystal oscillating circuit is by inverting amplifier U1, be serially connected in the resistance R9 between the input of inverting amplifier U1 and output and quartz oscillator X1, the electric capacity C1 that positive pole is connected with the input of inverting amplifier U1, negative pole is connected with the collector electrode of transistor Q1, and the tunable capacitor C2 that positive pole is connected with the output of inverting amplifier U1, negative pole is connected with the base stage of transistor Q2 forms; Described secondary crystal oscillating circuit is by inverting amplifier U2, be serially connected in the resistance R10 between the input of inverting amplifier U2 and output and quartz oscillator X2, the tunable capacitor C4 that positive pole is connected with the input of inverting amplifier U2, negative pole is connected with the collector electrode of transistor Q2, and the electric capacity C3 that positive pole is connected with the output of inverting amplifier U2, negative pole is connected with the base stage of transistor Q1 forms.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410675257.7A CN104410296A (en) | 2014-11-23 | 2014-11-23 | Logic control circuit based power source for power system fault detection device |
| CN201510290370.8A CN104868711A (en) | 2014-11-23 | 2015-06-01 | Constant current circuit-based power supply for power system fault detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410675257.7A CN104410296A (en) | 2014-11-23 | 2014-11-23 | Logic control circuit based power source for power system fault detection device |
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| CN104410296A true CN104410296A (en) | 2015-03-11 |
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| CN201410675257.7A Pending CN104410296A (en) | 2014-11-23 | 2014-11-23 | Logic control circuit based power source for power system fault detection device |
| CN201510290370.8A Pending CN104868711A (en) | 2014-11-23 | 2015-06-01 | Constant current circuit-based power supply for power system fault detection device |
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| CN201510290370.8A Pending CN104868711A (en) | 2014-11-23 | 2015-06-01 | Constant current circuit-based power supply for power system fault detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868711A (en) * | 2014-11-23 | 2015-08-26 | 成都冠深科技有限公司 | Constant current circuit-based power supply for power system fault detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2624422B1 (en) * | 2012-01-31 | 2019-08-28 | Canon Kabushiki Kaisha | Power source, power failure detection apparatus, and image forming apparatus |
| CN103490605B (en) * | 2013-10-12 | 2015-12-23 | 成都芯源系统有限公司 | Isolated switch converter and controller and control method thereof |
| CN104410296A (en) * | 2014-11-23 | 2015-03-11 | 成都创图科技有限公司 | Logic control circuit based power source for power system fault detection device |
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2014
- 2014-11-23 CN CN201410675257.7A patent/CN104410296A/en active Pending
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2015
- 2015-06-01 CN CN201510290370.8A patent/CN104868711A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868711A (en) * | 2014-11-23 | 2015-08-26 | 成都冠深科技有限公司 | Constant current circuit-based power supply for power system fault detection device |
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| CN104868711A (en) | 2015-08-26 |
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Application publication date: 20150311 |