CN203984384U - A kind of pair of photovoltaic optocoupler drives DC solid-state relay - Google Patents
A kind of pair of photovoltaic optocoupler drives DC solid-state relay Download PDFInfo
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- CN203984384U CN203984384U CN201420336233.4U CN201420336233U CN203984384U CN 203984384 U CN203984384 U CN 203984384U CN 201420336233 U CN201420336233 U CN 201420336233U CN 203984384 U CN203984384 U CN 203984384U
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- diode
- optocoupler
- field effect
- power field
- effect pipe
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Abstract
The utility model relates to a kind of pair of photovoltaic optocoupler and drives DC solid-state relay, it is characterized in that described element comprises the first diode and the second diode, former limit resistance and secondary resistance, the first optocoupler and the second optocoupler, the first power field effect pipe and the second power field effect pipe, described the first optocoupler and the second optocoupler are former limit and have a light-emitting diode, secondary has a photodiode, and the first described power field effect pipe and the second power field effect pipe are N channel-type enhancement mode MOSFET.
Description
Technical field
The present invention relates to a kind of DC solid-state relay, relate more specifically to a kind of not input, output polarity requirement, use DC solid-state relay flexibly.
Background technology
Conventional DC solid-state relay, its input and output all have the requirement of Polarity Control, and input can not reversed polarity be used, and output can not reversed polarity be used.
Chinese patent literature CN2228692Y discloses a kind of photovoltaic solid-state relay, having proposed DC solid-state relay output loop is formed in parallel by two power field effect pipes, can be used as AC-DC switch, realize the nonpolarity of solid-state relay output, but its input still there is the requirement of Polarity Control.
Optocoupler, it is photoelectrical coupler, photoelectrical coupler be take light as the media transmission signal of telecommunication, input, output electrical signals are had to good buffer action, photoelectrical coupler adds the signal of telecommunication at input makes light emitting source luminous, light intensity depends on the size of exciting current, after this illumination is mapped on the light-receiving device being packaged together, because photoelectric effect has produced photoelectric current, by light-receiving device output, drawn, thereby realized the conversion of electrical-optical-electricity, because photoelectric effect claims again photovoltaic effect, so optocoupler is called again photovoltaic optocoupler.
Summary of the invention
The invention discloses a kind of DC solid-state relay that does not have input, output polarity control to require, aim to provide a kind of use flexible, simple in structure, control convenient, the various DC solid-state relay of load.
The technical solution used in the present invention is as follows
The invention provides a kind of pair of photovoltaic optocoupler and drive DC solid-state relay, it is characterized in that described element comprises the first diode V1 and the second diode V2, former limit resistance R 1 and secondary resistance R 2, the first optocoupler N1 and the second optocoupler N2, the first power field effect pipe V3 and the second power field effect pipe V4, described the first optocoupler N1 and the second optocoupler N2 are former limit and have a light-emitting diode, secondary has a photodiode, and the first described power field effect pipe and the second power field effect pipe are N channel-type enhancement mode MOSFET;
The connected mode of described element is
The one group of identical homopolar end of the first diode and the second diode of take is input, and take the drain electrode of the first power field effect pipe and the drain electrode of the second power field effect pipe is output.
The first diode anode is connected with the light-emitting diodes tube cathode on the first former limit of optocoupler, the first diode cathode is connected with the light-emitting diodes tube anode on the first former limit of optocoupler, the negative electrode of the second diode is connected to the light-emitting diodes tube anode on the second former limit of optocoupler simultaneously, the anode of the second diode is connected with the light-emitting diodes tube cathode on the second former limit of optocoupler, and the first diode is not connected with former limit resistance as one group of identical polar end of output with the second diode.
The photodiode anode of the first optical coupling secondary edges is connected with one end of secondary resistance with the photodiode anode of the second optical coupling secondary edges, the grid of the grid of the first power field effect pipe, the second power field effect pipe, the other end of secondary resistance is connected with the photodiode cathode of the second optical coupling secondary edges, the photodiode cathode of the first optical coupling secondary edges is connected with the source electrode of the first power field effect pipe with the photodiode cathode of the second optical coupling secondary edges, and the source electrode of the first power field effect pipe is connected with the source electrode of the second power field effect pipe.
Described two photovoltaic optocouplers drive DC solid-state relays, it is characterized in that usining that the anode of the first diode and the second diode is as input, and described former limit resistance is connected the first diode with the negative electrode of the second diode.
Described two photovoltaic optocouplers drive DC solid-state relays, it is characterized in that usining that the negative electrode of the first diode and the second diode is as input, and described former limit resistance is connected the first diode with the anode of the second diode.
During work, regardless of two input input polarity, all can make a job in the first optocoupler and the second optocoupler, to drive the conducting simultaneously of the first power field effect pipe and the second power field effect pipe, connect output.
Good effect of the present invention:
Compare with disclosed photovoltaic DC solid-state relay in list of references, direct current relay provided by the invention, two photovoltaic optocoupler Driving technique have been adopted, use the optocoupler of bypass diode reversed polarity input, thereby realized the control mode without input polar requirement, thereby also solved the problem that traditional DC solid-state relay input polarity can not reversal connection; Use two power field effect pipes to connect load, thereby realized output, there is no polar requirement.The present invention uses components and parts few, and circuit structure is simple, with low cost, can obtain DC solid-state relay applying flexible simultaneously, control technique effect easily.The present invention can be used for replacing existing DC solid-state relay, for distribution control etc.
Accompanying drawing explanation
Fig. 1 is that two photovoltaic optocouplers that embodiment 1 provides drive DC solid-state relay circuit diagram;
Fig. 2 is that two photovoltaic optocouplers that embodiment 2 provides drive DC solid-state relay circuit diagram.
Description of reference numerals: the first diode V1, the second diode V2, former limit resistance R 1, secondary resistance R 2, the first optocoupler N1, the second optocoupler N2, the first power field effect pipe V3, the second power field effect pipe V4.
Embodiment
Below, by reference to the accompanying drawings and specific embodiment, invention is further described.
Embodiment 1
As shown in Figure 1
The anode of the first diode V1 and the second diode V2 of take is input, and the drain electrode of the drain electrode of the first power field effect pipe V3 and the second power field effect pipe V4 is output.
The first diode V1 anode is connected with the light-emitting diodes tube cathode on the first former limit of optocoupler N1, the first diode V1 negative electrode is connected with the light-emitting diodes tube anode on the first former limit of optocoupler N1, the negative electrode of the second diode V2 is connected to the light-emitting diodes tube anode on the second former limit of optocoupler N2 simultaneously, the anode of the second diode V2 is connected with the light-emitting diodes tube cathode on the second former limit of optocoupler N2, and the first diode V1 is connected by former limit resistance R 1 with the cathode terminal of the second diode 2.
The photodiode anode of the first optocoupler N1 secondary is connected with one end of secondary resistance R 2 with second photodiode anode of optocoupler N2 secondary, the grid of the grid of the first power field effect pipe V3, the second power field effect pipe V4, the other end of secondary resistance R 2 is connected with the photodiode cathode of the second optocoupler N2 secondary, the photodiode cathode of the first optocoupler N1 secondary is connected with the source electrode of the first power field effect pipe V3 with the photodiode cathode of the second optocoupler N2 secondary, and the source electrode of the first power field effect pipe V3 is connected with the source electrode of the second power field effect pipe V4.
During work, if the first diode V1 anode is just to input, the second diode V2 anode is negative for input, and the second optocoupler N2 works, and driving the first power field effect pipe V3 and the second power field effect pipe V4 conducting simultaneously, connects output; If otherwise the first diode V1 anode is negative for input, the second diode V2 anode is for just inputting, the first optocoupler N1 work, drives the conducting simultaneously of the first power field effect pipe V3 and the second power field effect pipe, connects and exports.
Embodiment 2
As shown in Figure 2, difference from Example 1 is, the negative electrode of the first diode V1 and the second diode V2 of take is input, and the first diode V1 is connected by former limit resistance R 1 with the anode tap of the second diode 2.
During work, if the first diode V1 negative electrode is just to input, the second diode V2 negative electrode is negative for input, and the second optocoupler N2 works, and driving the first power field effect pipe V3 and the second power field effect pipe V4 conducting simultaneously, connects output; If the first diode V1 negative electrode is negative for input, the second diode V2 negative electrode is for just inputting, and the first optocoupler N1 work, also can drive the first power field effect pipe V3 and the second power field effect pipe V4 conducting simultaneously, connects output.
The foregoing is only better possible embodiments of the present invention, not thereby limit to the scope of the claims of the present invention, therefore the equivalent structure that every utilization specification of the present invention and accompanying drawing content are done changes, be all contained in protection scope of the present invention.
Claims (3)
1. two photovoltaic optocouplers drive DC solid-state relay, it is characterized in that described element comprises the first diode V1 and the second diode V2, former limit resistance R 1 and secondary resistance R 2, the first optocoupler N1 and the second optocoupler N2, the first power field effect pipe V3 and the second power field effect pipe V4, described the first optocoupler and N1 and the second optocoupler N2 are former limit and have a light-emitting diode, secondary has a photodiode, and the first described power field effect pipe and the second power field effect pipe are N channel-type enhancement mode MOSFET;
The connected mode of described element is
The one group of identical homopolar end of the first diode and the second diode of take is input, and take the drain electrode of the first power field effect pipe and the drain electrode of the second power field effect pipe is output;
The first diode anode is connected with the light-emitting diodes tube cathode on the first former limit of optocoupler, the first diode cathode is connected with the light-emitting diodes tube anode on the first former limit of optocoupler, the negative electrode of the second diode is connected to the light-emitting diodes tube anode on the second former limit of optocoupler simultaneously, the anode of the second diode is connected with the light-emitting diodes tube cathode on the second former limit of optocoupler, and the first diode is not connected with former limit resistance as one group of identical polar end of output with the second diode;
The photodiode anode of the first optical coupling secondary edges is connected with one end of secondary resistance with the photodiode anode of the second optical coupling secondary edges, the grid of the grid of the first power field effect pipe, the second power field effect pipe, the other end of secondary resistance is connected with the photodiode cathode of the second optical coupling secondary edges, the photodiode cathode of the first optical coupling secondary edges is connected with the source electrode of the first power field effect pipe with the photodiode cathode of the second optical coupling secondary edges, and the source electrode of the first power field effect pipe is connected with the source electrode of the second power field effect pipe.
2. the as claimed in claim 1 pair of photovoltaic optocoupler drives DC solid-state relay, it is characterized in that usining that the anode of the first diode and the second diode is as input, and described former limit resistance is connected the first diode with the negative electrode of the second diode.
3. the as claimed in claim 1 pair of photovoltaic optocoupler drives DC solid-state relay, it is characterized in that usining that the negative electrode of the first diode and the second diode is as input, and described former limit resistance is connected the first diode with the anode of the second diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420336233.4U CN203984384U (en) | 2014-06-23 | 2014-06-23 | A kind of pair of photovoltaic optocoupler drives DC solid-state relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420336233.4U CN203984384U (en) | 2014-06-23 | 2014-06-23 | A kind of pair of photovoltaic optocoupler drives DC solid-state relay |
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| Publication Number | Publication Date |
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| CN203984384U true CN203984384U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420336233.4U Expired - Fee Related CN203984384U (en) | 2014-06-23 | 2014-06-23 | A kind of pair of photovoltaic optocoupler drives DC solid-state relay |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113318A (en) * | 2014-06-23 | 2014-10-22 | 中国航天科工集团第三研究院第八三五七研究所 | Non-polarity direct-current solid-state relay |
| CN109560531A (en) * | 2018-11-09 | 2019-04-02 | 天津航空机电有限公司 | A kind of aviation DC low-power power circuit with reflux, over-voltage protecting function |
| CN111431519A (en) * | 2020-04-17 | 2020-07-17 | 贵州振华群英电器有限公司（国营第八九一厂） | Small-packaged high-power solid relay |
-
2014
- 2014-06-23 CN CN201420336233.4U patent/CN203984384U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113318A (en) * | 2014-06-23 | 2014-10-22 | 中国航天科工集团第三研究院第八三五七研究所 | Non-polarity direct-current solid-state relay |
| CN109560531A (en) * | 2018-11-09 | 2019-04-02 | 天津航空机电有限公司 | A kind of aviation DC low-power power circuit with reflux, over-voltage protecting function |
| CN111431519A (en) * | 2020-04-17 | 2020-07-17 | 贵州振华群英电器有限公司（国营第八九一厂） | Small-packaged high-power solid relay |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20170623 |