CN218728761U - Voltage stabilization output circuit based on photoelectric coupler - Google Patents
Voltage stabilization output circuit based on photoelectric coupler Download PDFInfo
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- CN218728761U CN218728761U CN202223250723.6U CN202223250723U CN218728761U CN 218728761 U CN218728761 U CN 218728761U CN 202223250723 U CN202223250723 U CN 202223250723U CN 218728761 U CN218728761 U CN 218728761U
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Abstract
The utility model is suitable for an output circuit protection technology improves the field, provides a steady voltage output circuit based on optoelectronic coupler, steady voltage output circuit based on optoelectronic coupler includes drive unit, isolation unit, filtering unit and output unit, drive unit's output is connected the input of isolation unit, the output of isolation unit is connected output unit's input, the drive unit is connected the filtering unit. The circuit is simple in structure, convenient to use, sensitive in response, good in voltage stabilizing effect, high in popularization and use value and high in safety coefficient due to the adoption of the optocouplers.
Description
Technical Field
The utility model belongs to the technical change of output circuit protection machine field especially relates to a steady voltage output circuit based on optoelectronic coupler.
Background
With the maturity of electronic circuit technology in China, various electronic devices develop rapidly, and people enjoy the convenience brought by the electronic devices greatly, but any electronic device can normally work only under the support of a power supply, the requirement of the electronic device on the power supply circuit is to provide electric energy which is continuously stable and meets the requirement of a load, a voltage limiting protection circuit is sometimes required to be used in an output circuit to ensure the use stability of the output circuit, stable direct current electric energy is required to be provided under the common condition, and the power supply for providing the stable direct current electric energy is direct current voltage stabilization; however, in the conventional technology, the structure of the voltage-stabilizing output protection circuit is complex, the voltage-stabilizing effect is poor, and meanwhile, more electronic components are used, so that the cost of the circuit is greatly increased, and the applicability is limited.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a steady voltage output circuit based on photoelectric coupler aims at solving foretell technical problem.
The utility model discloses a realize like this, a steady voltage output circuit based on optoelectronic coupler, steady voltage output circuit based on optoelectronic coupler includes drive unit, isolation unit, filtering unit and output unit, drive unit's output is connected the input of isolation unit, the output of isolation unit is connected output unit's input, the drive unit is connected the filtering unit.
The utility model discloses a further technical scheme is: the isolation unit adopts a photoelectric coupler U1.
The utility model discloses a further technical scheme is: the output unit comprises a resistor R7, a voltage stabilizing diode D1, a voltage stabilizing diode D2, a resistor R8, a resistor R10, a triode Q5, a triode Q6, a resistor R11, a sliding rheostat R12, a resistor R13, a resistor R14, a capacitor C2, a resistor R15, a resistor R16, a resistor R17, a triode Q4, a resistor R3, a resistor R4 and a triode Q3, wherein the 4 th pin of the photoelectric coupler U1 is respectively connected with one end of the resistor R8, the anode of the voltage stabilizing diode D1 and the collector of the triode Q5, the 3 rd pin of the wide electric coupler U1 is respectively connected with the other end of the resistor R8, one end of the resistor R14 and the collector of the triode Q6, the emitter of the triode Q5 and the emitter of the triode Q6 are respectively used for grounding the resistor R10, the cathode of the voltage stabilizing diode D1 is connected with one end of the resistor R7, the other end of the resistor R7 is connected with the base of the triode Q5 and the cathode of the zener diode D2, the base of the triode Q6 is connected with the sliding end of the sliding rheostat R12, one end of the sliding rheostat R12 is grounded through a resistor R11, the other end of the sliding rheostat R12 is connected with one end of a resistor R13, the 2 nd pin of the optoelectronic coupler U1 is connected with one end of the resistor R16, one end of the resistor R15 and the emitting electrode of the triode Q3, the other end of the resistor R16 is connected with one end of the capacitor C2 and the base of the triode Q4, the emitting electrode of the triode Q4 is connected with one end of the resistor R17, the other end of the resistor R13 is connected with one end of the resistor R4 and the emitting electrode of the triode Q3, the base of the triode Q3 is connected with one end of the resistor R3, and the other end of the resistor R3 is connected with the other end of the resistor R4.
The utility model discloses a further technical scheme is: the drive unit includes resistance R1, resistance R2, triode Q1 and resistance R5, and triode Q1's base is connected respectively photoelectric coupler U1's the 1 st foot, triode Q3's collecting electrode, resistance R5's one end and triode Q4's collecting electrode, triode Q1's projecting pole is connected triode Q2's base, triode Q2's projecting pole is connected respectively resistance R4's the other end and resistance R3's the other end, triode Q2's collecting electrode is connected resistance R1's one end, resistance R1's the other end is connected resistance R2's one end, resistance R2's the other end is connected respectively resistance R5's the other end and triode Q1's collecting electrode.
The utility model discloses a further technical scheme is: the filtering unit comprises a resistor R6 and a capacitor C1, wherein one end of the resistor R6 is respectively connected with the other end of the resistor R2, the other end of the resistor R5 and the collector of the triode Q1.
The utility model discloses a further technical scheme is: the triode Q1 adopts a high-voltage resistant transistor.
The utility model has the advantages that: the circuit is simple in structure, convenient to use, sensitive in response, good in voltage stabilizing effect, high in popularization and use value and high in safety coefficient of the optical coupler.
Drawings
Fig. 1 is an electrical schematic diagram of a voltage stabilization output circuit based on a photoelectric coupler provided by the embodiment of the present invention.
Detailed Description
As shown in fig. 1, the utility model provides a steady voltage output circuit based on optoelectronic coupler, steady voltage output circuit based on optoelectronic coupler includes drive unit, isolation unit, filtering unit and output unit, drive unit's output is connected the input of isolation unit, input voltage are connected to drive unit's input, the output of isolation unit is connected output unit's input, the drive unit is connected filtering unit utilizes the alternating current filtering in the filtering unit with the direct current.
The isolation unit adopts a photoelectric coupler U1. Separate both ends through the opto-coupler for steady voltage output point effect can not disturbed like this, makes the steady voltage effect of circuit better stable.
The output unit comprises a resistor R7, a voltage stabilizing diode D1, a voltage stabilizing diode D2, a resistor R8, a resistor R10, a triode Q5, a triode Q6, a resistor R11, a sliding rheostat R12, a resistor R13, a resistor R14, a capacitor C2, a resistor R15, a resistor R16, a resistor R17, a triode Q4, a resistor R3, a resistor R4 and a triode Q3, wherein the 4 th pin of the photoelectric coupler U1 is respectively connected with one end of the resistor R8, the anode of the voltage stabilizing diode D1 and the collector of the triode Q5, the 3 rd pin of the wide electric coupler U1 is respectively connected with the other end of the resistor R8, one end of the resistor R14 and the collector of the triode Q6, the emitter of the triode Q5 and the emitter of the triode Q6 are respectively used for grounding the resistor R10, the cathode of the voltage stabilizing diode D1 is connected with one end of the resistor R7, the other end of the resistor R7 is connected with the base of the triode Q5 and the cathode of the zener diode D2, the base of the triode Q6 is connected with the sliding end of the sliding rheostat R12, one end of the sliding rheostat R12 is grounded through a resistor R11, the other end of the sliding rheostat R12 is connected with one end of a resistor R13, the 2 nd pin of the optoelectronic coupler U1 is connected with one end of the resistor R16, one end of the resistor R15 and the emitting electrode of the triode Q3, the other end of the resistor R16 is connected with one end of the capacitor C2 and the base of the triode Q4, the emitting electrode of the triode Q4 is connected with one end of the resistor R17, the other end of the resistor R13 is connected with one end of the resistor R4 and the emitting electrode of the triode Q3, the base of the triode Q3 is connected with one end of the resistor R3, and the other end of the resistor R3 is connected with the other end of the resistor R4.
The drive unit includes resistance R1, resistance R2, triode Q1 and resistance R5, and triode Q1's base is connected respectively photoelectric coupler U1's the 1 st foot, triode Q3's collecting electrode, resistance R5's one end and triode Q4's collecting electrode, triode Q1's projecting pole is connected triode Q2's base, triode Q2's projecting pole is connected respectively resistance R4's the other end and resistance R3's the other end, triode Q2's collecting electrode is connected resistance R1's one end, resistance R1's the other end is connected resistance R2's one end, resistance R2's the other end is connected respectively resistance R5's the other end and triode Q1's collecting electrode.
The utility model discloses a further technical scheme is: the filtering unit comprises a resistor R6 and a capacitor C1, wherein one end of the resistor R6 is connected with the other end of the resistor R2, the other end of the resistor R5 and the collector of the triode Q1 respectively.
The triode Q1 adopts a high-voltage resistant transistor.
During use, the triode Q1 in the driving unit needs to adopt a transistor with higher withstand voltage, and the model of the transistor can be 3dg27. When the output voltage is increased, the bias voltage in the triode Q6 is increased, the forward current of a light emitting diode in the photoelectric coupler U1 is increased, the voltage between the photosensitive tube electrodes is reduced, the junction bias voltage of the triode Q2be is reduced, the internal resistance is increased, the output voltage is reduced, and the stability of the output voltage is kept.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The voltage stabilizing output circuit based on the photoelectric coupler is characterized by comprising a driving unit, an isolation unit, a filtering unit and an output unit, wherein the output end of the driving unit is connected with the input end of the isolation unit, the output end of the isolation unit is connected with the input end of the output unit, and the driving unit is connected with the filtering unit.
2. The stabilized voltage output circuit based on a photoelectric coupler is characterized in that the isolation unit adopts a photoelectric coupler U1.
3. The stabilized voltage output circuit based on the photoelectric coupler of claim 2, the output unit comprises a resistor R7, a voltage stabilizing diode D1, a voltage stabilizing diode D2, a resistor R8, a resistor R10, a triode Q5, a triode Q6, a resistor R11, a slide rheostat R12, a resistor R13, a resistor R14, a capacitor C2, a resistor R15, a resistor R16, a resistor R17, a triode Q4, a resistor R3, a resistor R4 and a triode Q3, the 4 th pin of the photoelectric coupler U1 is respectively connected with one end of the resistor R8, the anode of the voltage stabilizing diode D1 and the collector of the triode Q5, the 3 rd pin of the photoelectric coupler U1 is respectively connected with the other end of the resistor R8, one end of the resistor R14 and the collector of the triode Q6, the emitter of the transistor Q5 and the emitter of the transistor Q6 respectively connect the resistor R10 to ground, the cathode of the voltage stabilizing diode D1 is connected with one end of the resistor R7, the other end of the resistor R7 is respectively connected with the base electrode of the triode Q5 and the cathode of the voltage stabilizing diode D2, the base electrode of the triode Q6 is connected with the sliding end of the sliding rheostat R12, one end of the sliding rheostat R12 is grounded through a resistor R11, the other end of the slide rheostat R12 is connected with one end of a resistor R13, a No. 2 pin of the photoelectric coupler U1 is respectively connected with one end of a resistor R16, one end of a resistor R15 and an emitting electrode of a triode Q3, the other end of the resistor R16 is respectively connected with one end of the capacitor C2 and the base electrode of the triode Q4, the emitter of the triode Q4 is connected with one end of the resistor R17, the other end of the resistor R13 is respectively connected with one end of the resistor R4 and the emitter of the triode Q3, the base electrode of the triode Q3 is connected with one end of the resistor R3, and the other end of the resistor R3 is connected with the other end of the resistor R4.
4. The photocoupler-based voltage-stabilized output circuit according to claim 3, wherein the driving unit includes a resistor R1, a resistor R2, a transistor Q1, and a resistor R5, a base of the transistor Q1 is connected to the pin 1 of the photocoupler U1, a collector of the transistor Q3, one end of the resistor R5, and a collector of the transistor Q4, respectively, an emitter of the transistor Q1 is connected to the base of the transistor Q2, an emitter of the transistor Q2 is connected to the other end of the resistor R4 and the other end of the resistor R3, respectively, a collector of the transistor Q2 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the other end of the resistor R5 and the collector of the transistor Q1, respectively.
5. The stabilized voltage output circuit based on a photoelectric coupler of claim 4, wherein the filtering unit comprises a resistor R6 and a capacitor C1, and one end of the resistor R6 is connected to the other end of the resistor R2, the other end of the resistor R5 and the collector of the transistor Q1, respectively.
6. The stabilized voltage output circuit based on a photoelectric coupler of claim 5, wherein the triode Q1 is a high voltage transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223250723.6U CN218728761U (en) | 2022-12-05 | 2022-12-05 | Voltage stabilization output circuit based on photoelectric coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223250723.6U CN218728761U (en) | 2022-12-05 | 2022-12-05 | Voltage stabilization output circuit based on photoelectric coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218728761U true CN218728761U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223250723.6U Active CN218728761U (en) | 2022-12-05 | 2022-12-05 | Voltage stabilization output circuit based on photoelectric coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218728761U (en) |
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- 2022-12-05 CN CN202223250723.6U patent/CN218728761U/en active Active
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