CN211959188U - High-speed signal isolation module with wide voltage input - Google Patents
High-speed signal isolation module with wide voltage input Download PDFInfo
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- CN211959188U CN211959188U CN202020458848.XU CN202020458848U CN211959188U CN 211959188 U CN211959188 U CN 211959188U CN 202020458848 U CN202020458848 U CN 202020458848U CN 211959188 U CN211959188 U CN 211959188U
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Abstract
The utility model discloses a high-speed signal isolation module of wide voltage input, including a plurality of input/output isolation circuits, the input/output isolation circuit includes signal input terminal, high-speed opto-coupler relay, bidirectional diode and signal output terminal; the input end of the high-speed optocoupler relay is connected with a signal input terminal, and the output end of the high-speed optocoupler relay is connected with a signal output terminal; and the bidirectional diode is connected in parallel at the output end of the high-speed optocoupler relay. The advantage of the method is that when the load connected with the signal output terminal is large, the input voltage of the signal input terminal is stable, and the input voltage of the signal input terminal cannot be influenced by the overlarge load connected with the signal output terminal. The circuit component at the front end of the signal input terminal is protected.
Description
Technical Field
The utility model belongs to the technical field of the electronic technology and specifically relates to a high-speed signal isolation module of wide voltage input.
Background
The voltage of the signal input end can change along with the change of the voltage of the signal output end, when the signal output end is connected with a load to be larger, the voltage of the signal input end can be increased, and when the signal output end is connected with the load to be smaller, the voltage of the signal input end can be reduced; in this case, the voltage output from the signal input terminal is unstable, and when the front end of the signal input terminal is connected with expensive components, the components are easily burned out.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the not enough of prior art, provide a high-speed signal isolation module of wide voltage input.
The utility model discloses a technical scheme:
a high-speed signal isolation module with wide voltage input comprises a plurality of input and output isolation circuits, wherein each input and output isolation circuit comprises a signal input terminal, a high-speed optical coupling relay, a bidirectional diode and a signal output terminal; the input end of the high-speed optocoupler relay is connected with a signal input terminal, and the output end of the high-speed optocoupler relay is connected with a signal output terminal; and the bidirectional diode is connected in parallel at the output end of the high-speed optocoupler relay.
A preferred scheme is that a signal indicator lamp is connected between the signal input terminal and the high-speed optocoupler relay.
One preferable scheme is that a current limiting resistor is connected between the signal input terminal and the high-speed optocoupler relay.
One preferred scheme is that the input end of the high-speed optocoupler relay is connected in parallel with a voltage reduction resistor.
One preferred scheme is that the number of the input/output isolation circuits is 2-32.
The wide-voltage-input high-speed signal isolation module further comprises a public input wiring terminal, and the positive terminals of the signal input terminals are connected with the public input wiring terminal respectively. The wide-voltage-input high-speed signal isolation module further comprises a public output wiring terminal, and the positive terminals of the plurality of signal output terminals are respectively connected with the public output wiring terminal.
One preferred scheme is that the number of the input/output isolation circuits is 4, 8 or 16.
Synthesize above-mentioned technical scheme, the beneficial effects of the utility model: when the load connected with the signal output terminal is large, the input voltage of the signal input terminal is relatively stable, and the input voltage of the signal input terminal cannot be influenced by the overlarge load connected with the signal output terminal. The circuit component at the front end of the signal input terminal is protected.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of a first embodiment of the present invention;
fig. 2 is a schematic diagram of a second embodiment of the present invention;
fig. 3 is a first schematic diagram of a third embodiment of the present invention;
fig. 4 is a schematic diagram of a third embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be further described with reference to the accompanying drawings.
A first embodiment, as shown in fig. 1, is a high-speed signal isolation module with wide voltage input, including a plurality of input/output isolation circuits 10, where the input/output isolation circuits 10 include a signal input terminal 11, a high-speed optocoupler relay 12, a bidirectional diode 13, and a signal output terminal 14; the input end of the high-speed optical coupling relay 12 is connected with the signal input terminal 11, and the output end of the high-speed optical coupling relay 12 is connected with the signal output terminal 14; the bidirectional diode 13 is connected in parallel with the output end of the high-speed optocoupler relay 12.
As shown in fig. 1, the high-speed optocoupler relay 12 plays a role in signal isolation or photoelectric isolation, the bidirectional diode 13 plays a role in overvoltage protection, when a signal is input into the signal input terminal 11, the high-speed optocoupler relay 12 receives the signal, the switch of the high-speed optocoupler relay 12 is turned off, and the signal output terminal 14 and the high-speed optocoupler relay 12 form a closed loop; when another signal is input into the signal input terminal 11, the high-speed optocoupler relay 12 receives the signal, the switch of the high-speed optocoupler relay 12 is turned off, and the signal output terminal 14 and the high-speed optocoupler relay 12 are turned off.
As shown in FIG. 1, the input power of the signal input terminal 11 is 8-30V, and after passing through the high-speed optocoupler relay 12 and the bidirectional diode 13, the output voltage of the signal output terminal 14 is 0-60V. When the load connected to the signal output terminal 14 is large, the input voltage of the signal input terminal 11 is relatively stable, and the input voltage of the signal input terminal 11 is not affected by the excessive load connected to the signal output terminal 14. The circuit components at the front end of the signal input terminal 11 are protected.
As shown in fig. 1, a signal indicator lamp 15 is connected between the signal input terminal 11 and the high-speed optocoupler relay 12. The signal indicator lamp 15 plays a role of indication.
As shown in fig. 1, a current limiting resistor 16 is connected between the signal input terminal 11 and the high-speed optocoupler relay 12. The current limiting resistor 16 functions to limit current.
As shown in fig. 1, the input end of the high-speed optocoupler relay 12 is connected in parallel with a voltage dropping resistor 17. The step-down resistor 17 functions as a step-down.
As shown in fig. 2, the second embodiment is different from the first embodiment in that:
as shown in FIG. 2, the number of the input/output isolation circuits 10 is 2 to 32. The number of the input/output isolation circuits 10 is 4, 8 or 16.
Third embodiment, as shown in fig. 1 to 4, the difference between this embodiment and the first or second embodiment is that the wide voltage input high speed signal isolation module further includes a common input connection terminal 18, and the positive terminals of a plurality of the signal input terminals 11 are respectively connected to the common input connection terminal 18.
As shown in fig. 1 to 4, since the common input connection terminal 18 is connected to the positive terminals of at least two signal input terminals 11, respectively, there is no need to provide an output line for each signal input terminal 11, and each signal input terminal 11 shares one common input connection terminal 18, so that the number of input lines can be reduced; the purposes of saving cost and being convenient to use are achieved; the wiring is simple, and stability is good.
As shown in fig. 1 to 4, the wide voltage input high speed signal isolation module further includes a common output connection terminal 19, and the positive terminals of the plurality of signal output terminals 14 are respectively connected to the common output connection terminal 19.
As shown in fig. 1 to 4, since the common output connection terminal 19 is connected to the positive terminals of at least two signal output terminals 14, respectively, there is no need to provide an output line for each signal output terminal 14, and each signal output terminal 14 shares one common output connection terminal 19, so that the number of input lines can be reduced; the purposes of saving cost and being convenient to use are achieved; the wiring is simple, and stability is good.
The above is a detailed implementation manner of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (8)
1. A high-speed signal isolation module with wide voltage input is characterized by comprising a plurality of input and output isolation circuits, wherein each input and output isolation circuit comprises a signal input terminal, a high-speed optocoupler relay, a bidirectional diode and a signal output terminal; the input end of the high-speed optocoupler relay is connected with a signal input terminal, and the output end of the high-speed optocoupler relay is connected with a signal output terminal; and the bidirectional diode is connected in parallel at the output end of the high-speed optocoupler relay.
2. The wide voltage input high speed signal isolation module according to claim 1, wherein a signal indicator lamp is connected between the signal input terminal and the high speed optocoupler relay.
3. The wide voltage input high speed signal isolation module according to claim 1, wherein a current limiting resistor is connected between the signal input terminal and the high speed optocoupler relay.
4. The wide-voltage-input high-speed signal isolation module according to any one of claims 1 to 3, wherein a voltage reduction resistor is connected in parallel to an input end of the high-speed optocoupler relay.
5. The wide voltage input high speed signal isolation module according to claim 1, wherein the number of the input/output isolation circuits is 2-32.
6. The wide voltage input high speed signal isolation module according to claim 5, further comprising a common input connection terminal, wherein positive terminals of the plurality of signal input terminals are connected to the common input connection terminal, respectively.
7. The wide voltage input high speed signal isolation module according to claim 5 or 6, further comprising a common output connection terminal, wherein the positive terminals of the plurality of signal output terminals are respectively connected to the common output connection terminal.
8. The wide voltage input high speed signal isolation module according to claim 1 or 5, wherein the number of the input output isolation circuits is 4, 8 or 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020458848.XU CN211959188U (en) | 2020-04-02 | 2020-04-02 | High-speed signal isolation module with wide voltage input |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020458848.XU CN211959188U (en) | 2020-04-02 | 2020-04-02 | High-speed signal isolation module with wide voltage input |
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| Publication Number | Publication Date |
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| CN211959188U true CN211959188U (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020458848.XU Active CN211959188U (en) | 2020-04-02 | 2020-04-02 | High-speed signal isolation module with wide voltage input |
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2020
- 2020-04-02 CN CN202020458848.XU patent/CN211959188U/en active Active
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