CN2194565Y - Electronic transformer - Google Patents
Electronic transformer Download PDFInfo
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- CN2194565Y CN2194565Y CN 94227230 CN94227230U CN2194565Y CN 2194565 Y CN2194565 Y CN 2194565Y CN 94227230 CN94227230 CN 94227230 CN 94227230 U CN94227230 U CN 94227230U CN 2194565 Y CN2194565 Y CN 2194565Y
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Abstract
The utility model relates to a high frequency electronic transformer which adopts electronic components. The utility model comprises a commercial power rectifying and filtering circuit, a triggering signal generating circuit, a push and pull oscillating power amplification circuit, an output circuit, a feedback circuit, etc. The utility model has the advantages that the circuit is simple, the cost is low, the volume is 1/4 to 1/3 of the volume of an industrial frequency transformer which has the same power, the weight is 1/10 of the weight of the industrial frequency transformer which has the same power, the efficiency is larger than or equal to 92%, the self temperature rise is low and the electric parameters are stable. The utility model can supply power for resistive loads, the utility model can supply power for electronic equipment when the utility model is additionally provided with a rectifying and filtering circuit and the utility model can be sold as an independent power supply product.
Description
The utility model relates to a kind of voltage transformation product, and it is particularly related to a kind of high-frequency electronic power transformer product that adopts electronic devices and components to make.
Before the utility model proposes, use two kinds of transformers.A kind of is Industrial Frequency Transformer, it simple in structure, cost is low, but its weight and volume is all big, and efficient is low, particularly to low pressure, big electric current, powerful load, self-heating is big, shortcoming is more outstanding, so what adopt in fields such as computers all is electronic switch power, with weight reduction with reduce volume.But these Switching Power Supplies have adopted complicated control circuit, and cost height, power are limited, the general electronic transformer of realizing with self-maintained circuit, and the output voltage instability, load is overweight, will cause circuit failure of oscillation or output voltage to reduce; As load reduction, output voltage increases, and easily makes efferent duct cause over-voltage breakdown.As adopting controlling circuit of voltage regulation, cost will increase many, be difficult to use in general electric equipment products.
The purpose of this utility model is to propose a kind of electronic transformer that overcomes above drawback, and it is few to make it reach device, and output voltage is comparatively stable, and the self-heating amount is little, and the energy conversion efficiency height makes electronic transformer can be used for the purpose of general electronic products.
The purpose of this utility model can realize by following technical measures.This electronic transformer, it comprises that producing several parts such as circuit, push-pull oscillator power amplification circuit, output circuit and feedback circuit by commercial power rectification filter circuit, triggering signal forms, it is continuous with the power amplifier tube base stage on one side in the push-pull oscillator power amplification circuit that its triggering signal produces circuit, through the output transformer output voltage, the feedback signal that output transformer produces feeds back to the input on the both sides of the push-pull oscillator power amplification circuit that is attached thereto respectively through feedback circuit.
It is to adopt resistance, electric capacity and bidirectional trigger diode to constitute that triggering signal in this electronic transformer produces circuit, same direct-flow positive voltage+the E of one end of resistance R 6 links to each other, link to each other with galvanic negative pole (A end) behind its other end series capacitance C6, one end of resistance R 7 links to each other with the negative pole of power supply, link to each other with the tie point of resistance R 6 behind the other end series capacitance C5 with capacitor C 6, one end of bidirectional trigger diode links to each other with the tie point of resistance R 6 with capacitor C 6, and the other end links to each other with the base stage of the amplifier tube Q2 of push-pull amplifier circuit.The push-pull oscillator power amplification circuit is that the end of the same direct current+E of an end of the filter capacitor C1 in the electric capacity current rectifying and wave filtering circuit links to each other, negative pole (A end) with power supply behind the other end series capacitance C2 links to each other, the emitter of power amplifier tube Q2 links to each other with the negative pole of power supply, its collector electrode links to each other with the emitter of power amplifier tube Q1, and the collector electrode of Q1 links to each other with the positive pole+E of DC power supply.Output circuit is that the end of one group of coil N1 of output transformer B1 links to each other with the tie point of triode Q1, Q2, and the other end links to each other with the tie point of capacitor C 1 with capacitor C 2, and transformer B1 organizes coil N4 output voltage by another.Feedback circuit is that the end of one group of feedback coil N2 of transformer B1 links to each other with the emitter of triode Q1, other end series capacitance C3, resistance R 2 backs link to each other with the base stage of Q1, resistance R 3 also is connected between the base stage and emitter of triode Q1, another feedback circuit is that the end of one group of feedback coil N3 among the transformer B1 is continuous with the negative pole of power supply, other end series capacitance C4 links to each other with the base stage of resistance R 4 backs with triode Q2, and resistance R 5 also is connected between the base stage and emitter of Q2.For output transformer is worked under high frequency, the transformer B1 in the output circuit is that employing is the high frequency transformer of iron core with the Ferrite Material.
Operation principle of the present utility model is, civil power provides a direct current voltage to this product after by rectifying and wave-filtering, by resistance R 6, R7, capacitor C 5, C6 and bidirectional trigger diode form a signal generating circuit, constantly provide driving signal under enabling signal and the heavy duty to the push-pull oscillator amplifying circuit, triode Q1 and Q2 are operated under the self-oscillation situation, and feedback coil provides certain feedback voltage, are formed with the automatic control oscillating circuit that necessarily discharges and recharges time parameter through electric capacity and resistance.When starting, because the existence of resistance R 7 and capacitor C 5 is arranged, produce the effect of soft start, overweightly when power tube can not started because of output loading cause damage.Reduce or output loading when overweight at input voltage, feedback circuit broadens the output pulse, and it is stable that output voltage keeps; When too high or output loading was overweight when input voltage, feedback circuit made the output pulse narrowing, and it is stable that output voltage keeps.The output loading short circuit, the automatic failure of oscillation of circuit has been protected the power output pipe.
Compared with the prior art, the utlity model has following advantage:
1. circuit is simple, and cost is low.It is compared with similar transformer, does not establish voltage stabilizing circuit in addition, keeps output voltage relatively stable by the circuit self characteristics.
2. compare with traditional Industrial Frequency Transformer, volume has only the state 1/3 to 1/4 with the constant power Industrial Frequency Transformer, and weight has only with 1/10 of constant power Industrial Frequency Transformer.
3. its efficient can reach more than or equal to 92%, and self temperature rise is low, and circuit parameter is stable.
The explanation of the utility model Figure of description.
Fig. 1. circuit block diagram of the present utility model.
Fig. 2. circuit theory diagrams of the present utility model.
Describe with reference to Figure of description 1 and 2 couples of embodiment of the present utility model.
This electronic transformer, it comprises that producing several parts such as circuit, push-pull oscillator power amplification circuit, output circuit and feedback circuit by commercial power rectification filter circuit, triggering signal forms, it is continuous with the power amplifier tube base stage on one side in the push-pull oscillator power amplification circuit that triggering signal produces circuit, through the output transformer output voltage, the feedback signal that output transformer produces feeds back to the input on the both sides of the push-pull oscillator power amplification circuit that is attached thereto respectively through feedback circuit.
It is to adopt resistance, electric capacity and bidirectional trigger diode to constitute that the triggering signal of this electronic transformer produces circuit, and the same direct-flow positive voltage+E of an end of resistance R 6 links to each other.Link to each other with galvanic negative pole (A end) behind its other end series capacitance C6, one end of resistance R 7 links to each other with the negative pole of power supply, link to each other with the tie point of resistance R 6 behind the other end series capacitance C5 with capacitor C 6, one end of bidirectional diode links to each other with the tie point of resistance R 6 with capacitor C 6, and the other end links to each other with the base stage of the amplifier tube Q2 of push-pull amplifier circuit.The push-pull oscillator power amplification circuit is that the end of the same direct current+E of an end of the filter capacitor C1 in the electric capacity current rectifying and wave filtering circuit links to each other, negative pole with power supply behind the other end series capacitance C2 links to each other, the emitter of power amplifier tube Q2 links to each other with the negative pole of power supply, its collector electrode links to each other with the emitter of power amplifier tube Q1, and the collector electrode of Q1 links to each other with the positive pole+E of DC power supply.Output circuit is that the end of one group of coil N1 of output transformer B1 links to each other with the tie point of triode Q1, Q2, and the other end links to each other with the tie point of capacitor C 1 with capacitor C 2, and transformer B1 organizes coil N4 output voltage by another.Feedback circuit is that the end of one group of feedback coil N2 of transformer B1 links to each other with the emitter of triode Q1, other end series capacitance C3, resistance R 2 backs link to each other with the base stage of Q1, resistance R 3 also is connected between the base stage and emitter of triode Q1, another feedback circuit is that the end of one group of feedback coil N3 among the transformer B1 is continuous with the negative pole of power supply, other end series capacitance C4 links to each other with the base stage of resistance R 4 backs with triode Q2, and resistance R 5 also is connected between the base stage and emitter of Q2.For reducing the wastage, improve operating frequency, the transformer B1 in the output circuit is to be the high frequency transformer of iron core with the Ferrite Material.
In the utility model circuit, the selected parameter of electronic device following (parameter according to power output and operating frequency electronic device changes).
Electric capacity: C1=C2=0.1u, C3=C4=0.22u, C5=4.7u, C6=0.01u
Resistance: R1=1 Europe, R2=R3=R4=R5=22 Europe, R6=470 kilo-ohm, R7=15 kilo-ohm
Diode D1-D4=1N4007, D5 are 24 volts bidirectional diodes
Triode Q1=Q2=C2890(or DK56).
The utility model can be the power supply of low pressure resistive load, as bromine, sodium vapor lamp and white trifoliate orange lamp and electric heater and low-voltage electrical apparatus; Output can be power electronic equipment after adding current rectifying and wave filtering circuit.The utility model also can be used as the independent current source production marketing.
Claims (6)
1, a kind of electronic transformer, it comprises that producing several parts such as circuit, push-pull oscillator power amplification circuit, output circuit and feedback circuit by commercial power rectification filter circuit, triggering signal forms, it is continuous with the power amplifier tube base stage on one side in the push-pull oscillator power amplification circuit to it is characterized in that triggering signal produces circuit, through the output transformer output voltage, the feedback signal that output transformer produces feeds back to the input on the both sides of the push-pull oscillator power amplification circuit that is attached thereto respectively through feedback circuit.
2, a kind of electronic transformer according to claim 1, it is characterized in that it is to adopt resistance that wherein said triggering signal produces circuit, electric capacity and bidirectional trigger diode constitute, same direct-flow positive voltage+the E of one end of resistance R 6 links to each other, negative pole (A end) with DC power supply behind its other end series capacitance C6 links to each other, one end of resistance R 7 links to each other with the negative pole of power supply, link to each other with the tie point of resistance R 6 behind the other end series capacitance C5 with capacitor C 6, one end of bidirectional trigger diode links to each other with the tie point of resistance R 6 with capacitor C 6, and the other end links to each other with the base stage of the amplifier tube Q2 of push-pull amplifier circuit.
3, a kind of electronic transformer according to claim 1, it is characterized in that wherein said push-pull oscillator power amplification circuit is that the end of the same direct current+E of an end of the filter capacitor C1 in the electric capacity current rectifying and wave filtering circuit links to each other, negative pole with power supply behind the other end series capacitance C2 links to each other, the emitter of power amplifier tube Q2 links to each other with the negative pole of power supply, its collector electrode links to each other with the emitter of power amplifier tube Q1, and the collector electrode of Q1 links to each other with the positive pole+E of DC power supply.
4, a kind of electronic transformer according to claim 1, it is characterized in that wherein said output circuit is that the end of one group of coil N1 of output transformer B1 links to each other with the tie point of triode Q1, Q2, the other end links to each other with the tie point of capacitor C 1 with capacitor C 2, and transformer B1 is by another group coil N4 output voltage.
5, a kind of electronic transformer according to claim 1, it is characterized in that wherein said feedback circuit is that the end of one group of feedback coil N2 of transformer B1 links to each other with the emitter of triode Q1, other end series capacitance C3, resistance R 2 backs link to each other with the base stage of Q1, resistance R 3 is connected in parallel between the base stage and emitter of triode Q1, another feedback circuit is that the end of one group of feedback coil N3 among the transformer B1 is continuous with the negative pole of power supply, other end series capacitance C4 links to each other with the base stage of resistance R 4 backs with triode Q2, and resistance R 5 is connected in parallel between the base stage and emitter of Q2.
6, a kind of electronic transformer according to claim 4 is characterized in that the transformer B1 in the wherein said output circuit is to be the high frequency transformer of iron core with the Ferrite Material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94227230 CN2194565Y (en) | 1994-02-28 | 1994-02-28 | Electronic transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94227230 CN2194565Y (en) | 1994-02-28 | 1994-02-28 | Electronic transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2194565Y true CN2194565Y (en) | 1995-04-12 |
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ID=33840018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94227230 Expired - Fee Related CN2194565Y (en) | 1994-02-28 | 1994-02-28 | Electronic transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2194565Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482925A (en) * | 2017-08-28 | 2017-12-15 | 广西电网有限责任公司电力科学研究院 | A kind of frequency-conversion constant-current source follower circuit |
| CN112305281A (en) * | 2020-10-23 | 2021-02-02 | 北京盈拓润达电气科技有限公司 | Fault indicator test system and high-voltage power amplifying circuit thereof |
-
1994
- 1994-02-28 CN CN 94227230 patent/CN2194565Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482925A (en) * | 2017-08-28 | 2017-12-15 | 广西电网有限责任公司电力科学研究院 | A kind of frequency-conversion constant-current source follower circuit |
| CN107482925B (en) * | 2017-08-28 | 2019-11-22 | 广西电网有限责任公司电力科学研究院 | A kind of frequency-conversion constant-current source follower circuit |
| CN112305281A (en) * | 2020-10-23 | 2021-02-02 | 北京盈拓润达电气科技有限公司 | Fault indicator test system and high-voltage power amplifying circuit thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |