CN204425316U - Two-way responds High-current output type photoelectrical coupler fast - Google Patents
Two-way responds High-current output type photoelectrical coupler fast Download PDFInfo
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- CN204425316U CN204425316U CN201520156626.1U CN201520156626U CN204425316U CN 204425316 U CN204425316 U CN 204425316U CN 201520156626 U CN201520156626 U CN 201520156626U CN 204425316 U CN204425316 U CN 204425316U
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Abstract
A kind of two-way responds High-current output type photoelectrical coupler fast, and comprise two photoelectric conversion units, described photoelectric conversion unit is made up of illuminating part and photosensitive portion, and its improvement is: illuminating part adopts light-emitting diode to realize; Photosensitive portion is made up of photistor, divider resistance I, divider resistance II, voltage stabilizing didoe and N channel enhancement metal-oxide-semiconductor.Advantageous Effects of the present utility model is: can provide larger drive current, ensure that the response speed of photoelectrical coupler, can adapt to the demand of big current power stage environment.
Description
Technical field
The utility model relates to a kind of photoelectrical coupler, particularly relates to a kind of two-way and responds High-current output type photoelectrical coupler fast.
Background technology
In prior art, conventional photoelectrical coupler is generally made up of light-emitting diode, photodiode and triode; Problems existing is: because triode output current is not enough, cannot adapt to the demand of big current power stage environment.
Utility model content
For the problem in background technology, the utility model proposes a kind of two-way and respond High-current output type photoelectrical coupler fast, comprise two photoelectric conversion units, described photoelectric conversion unit is made up of illuminating part and photosensitive portion, and its structure is: described illuminating part adopts light-emitting diode to realize; Described photosensitive portion is made up of photistor, divider resistance I, divider resistance II, voltage stabilizing didoe and N channel enhancement metal-oxide-semiconductor, and the light accepting part of described photistor is relative with the illuminating part position of light-emitting diode; The emitter of photistor is connected with A node, and the collector electrode of photistor is connected with one end of divider resistance II, and the other end of divider resistance II is connected with D node; The negative electrode of voltage stabilizing didoe is connected with A node, and the anode of voltage stabilizing didoe is connected with B node; The two ends of divider resistance I are connected with B node with A node respectively; The grid of N channel enhancement metal-oxide-semiconductor is connected with A node, and the source electrode of N channel enhancement metal-oxide-semiconductor is connected with B node, and the drain electrode of N channel enhancement metal-oxide-semiconductor is connected with C node; B node ground connection, namely C node forms the output (C node is connected with power supply by load) of photoelectric conversion unit, and D node connects driving voltage.
Principle of the present utility model is: when light-emitting diode is not luminous, and N channel enhancement metal-oxide-semiconductor is in off state, photoelectric conversion unit no-output; When the controlled drives of light-emitting diode is luminous, photistor is because producing photogenerated current by illumination, photogenerated current produces stable driving voltage and is applied to grid and the source electrode of N channel enhancement metal-oxide-semiconductor after divider resistance I and voltage stabilizing didoe process, make the conducting of N channel enhancement metal-oxide-semiconductor, thus form electric current output at C Nodes; After adopting scheme of the present utility model, photoelectric conversion unit output adopts the drain electrode of N channel enhancement metal-oxide-semiconductor to export, improve current output capability greatly, make photoelectrical coupler can adapt to the demand of big current power stage environment, and in this programme, photogenerated current is converted to the grid source driving voltage of N channel enhancement metal-oxide-semiconductor by the mode that have employed photistor series voltage stabilizing diode, photistor collector electrode is connected with output loop, larger drive current can be provided, ensure that the response speed of photoelectrical coupler.
Preferably, the electronic component in described two photoelectric conversion units is symmetrical.This symmetrical two photoelectric conversion units can make the heat distribution on device more even, are conducive to improving device stability.
Advantageous Effects of the present utility model is: can provide larger drive current, ensure that the response speed of photoelectrical coupler, can adapt to the demand of big current power stage environment.
Accompanying drawing explanation
Fig. 1, electronic schematic diagram of the present utility model;
The electronic schematic diagram of Fig. 2, single photoelectric conversion unit;
Fig. 3, encapsulating structure schematic diagram of the present utility model;
In figure each mark corresponding to title be respectively: light-emitting diode 1, photistor 2, divider resistance I 3, divider resistance II 4, voltage stabilizing didoe 5, this diode of diode 6(are for connecting RC protective loop; during concrete connection; the negative electrode of diode is connected with D node, and the anode of diode connects RC loop), N channel enhancement metal-oxide-semiconductor 7.
Embodiment
A kind of two-way responds High-current output type photoelectrical coupler fast, and comprise two photoelectric conversion units, described photoelectric conversion unit is made up of illuminating part and photosensitive portion, and its structure is: described illuminating part adopts light-emitting diode 1 to realize; Described photosensitive portion is made up of photistor 2, divider resistance I 3, divider resistance II 4, voltage stabilizing didoe 5 and N channel enhancement metal-oxide-semiconductor 7, and the light accepting part of described photistor 2 is relative with the illuminating part position of light-emitting diode 1; The emitter of photistor 2 is connected with A node, and the collector electrode of photistor 2 is connected with one end of divider resistance II 4, and the other end of divider resistance II 4 is connected with D node; The negative electrode of voltage stabilizing didoe 5 is connected with A node, and the anode of voltage stabilizing didoe 5 is connected with B node; The two ends of divider resistance I 3 are connected with B node with A node respectively; The grid of N channel enhancement metal-oxide-semiconductor 7 is connected with A node, and the source electrode of N channel enhancement metal-oxide-semiconductor 7 is connected with B node, and the drain electrode of N channel enhancement metal-oxide-semiconductor 7 is connected with C node; B node ground connection, namely C node forms the output of photoelectric conversion unit, and D node connects driving voltage.
Further, the electronic component in described two photoelectric conversion units is symmetrical.
After tested, after adopting the utility model scheme, the maximum output current of photoelectrical coupler can rise to 10A, and response speed is less than 20 μ s simultaneously, make the scope of application of photoelectrical coupler obtain expansion, control application at power and can substitute traditional solid state relay to a certain extent.
Claims (2)
1. two-way responds a High-current output type photoelectrical coupler fast, comprises two photoelectric conversion units, and described photoelectric conversion unit is made up of illuminating part and photosensitive portion, it is characterized in that: described illuminating part adopts light-emitting diode (1) to realize; Described photosensitive portion is made up of photistor (2), divider resistance I (3), divider resistance II (4), voltage stabilizing didoe (5) and N channel enhancement metal-oxide-semiconductor (7), and the light accepting part of described photistor (2) is relative with the illuminating part position of light-emitting diode (1); The emitter of photistor (2) is connected with A node, and the collector electrode of photistor (2) is connected with one end of divider resistance II (4), and the other end of divider resistance II (4) is connected with D node; The negative electrode of voltage stabilizing didoe (5) is connected with A node, and the anode of voltage stabilizing didoe (5) is connected with B node; The two ends of divider resistance I (3) are connected with B node with A node respectively; The grid of N channel enhancement metal-oxide-semiconductor (7) is connected with A node, and the source electrode of N channel enhancement metal-oxide-semiconductor (7) is connected with B node, and the drain electrode of N channel enhancement metal-oxide-semiconductor (7) is connected with C node; B node ground connection, namely C node forms the output of photoelectric conversion unit, and D node connects driving voltage.
2. two-way according to claim 1 responds High-current output type photoelectrical coupler fast, it is characterized in that: the electronic component in described two photoelectric conversion units is symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520156626.1U CN204425316U (en) | 2015-03-19 | 2015-03-19 | Two-way responds High-current output type photoelectrical coupler fast |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520156626.1U CN204425316U (en) | 2015-03-19 | 2015-03-19 | Two-way responds High-current output type photoelectrical coupler fast |
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| CN204425316U true CN204425316U (en) | 2015-06-24 |
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| CN201520156626.1U Active CN204425316U (en) | 2015-03-19 | 2015-03-19 | Two-way responds High-current output type photoelectrical coupler fast |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412575A (en) * | 2018-11-30 | 2019-03-01 | 中国电子科技集团公司第四十四研究所 | A kind of optional high-speed figure type photoelectrical coupler of transmission direction |
-
2015
- 2015-03-19 CN CN201520156626.1U patent/CN204425316U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412575A (en) * | 2018-11-30 | 2019-03-01 | 中国电子科技集团公司第四十四研究所 | A kind of optional high-speed figure type photoelectrical coupler of transmission direction |
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