CN209388130U - A kind of power supply mixing control circuit - Google Patents
A kind of power supply mixing control circuit Download PDFInfo
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- CN209388130U CN209388130U CN201920168190.6U CN201920168190U CN209388130U CN 209388130 U CN209388130 U CN 209388130U CN 201920168190 U CN201920168190 U CN 201920168190U CN 209388130 U CN209388130 U CN 209388130U
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- optocoupler
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- negative
- switch
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Abstract
The utility model discloses a kind of power supply mixing control circuit, it includes auxiliary source, key switch, TTL signal source, first switch, the first optocoupler, the second optocoupler, power-supply system, the anode of auxiliary source is connected with the input terminal a of key switch, negative terminal is connect with the negative input end of the second optocoupler, and the output end d of key switch is connect by concatenated first switch, the second current-limiting resistance with the positive input terminal of the second optocoupler；The input terminal b of key switch is connect by the first current-limiting resistance with the positive input terminal of the first optocoupler, and output end c is connect with the anode in TTL signal source, and the negative terminal in TTL signal source is connect with the negative input end of the first optocoupler；First optocoupler, the second optocoupler positive output end connect with the enable end of power-supply system, negative output terminal is connect with the negative input end of power-supply system.The utility model is easily designed, convenient for operation, the control mode of switch or Transistor-Transistor Logic level can be adjusted by controlling the working condition of key switch and plays the role of controlling power-supply system.
Description
Technical field
The utility model relates to power technique fields, mix control circuit more particularly, to a kind of power supply.
Background technique
The output of common power has generally required enabled control port, and the enabled control function of power supply is usually to be opened by one
Device complete independently is closed either by Transistor-Transistor Logic level control circuit complete independently, above two enabled control mode can meet more
Demand of the number power supply to enabled control design case.But the work requirements to be easily adapted under particular surroundings, need a kind of switch
Control circuit is enabled with the power supply that Transistor-Transistor Logic level is used in mixed way.
Summary of the invention
To solve the above problems, the purpose of the utility model is to provide a kind of simple structure and reasonable design, using effect are good
Power supply mix control circuit, can reach using two different control modes and control the unlatching of the same power-supply system
And shutdown.
For achieving the above object, the utility model adopts the following technical solution:
A kind of power supply mixing control circuit comprising auxiliary source, key switch KS, TTL signal source, the first current-limiting resistance
R1, the second current-limiting resistance R2, first switch S1, the first optocoupler V1, the second optocoupler V2, power-supply system, the anode and qin of auxiliary source
The input terminal a of key switch KS is connected, and negative terminal is connect with the negative input end of the second optocoupler V2, and the output end d of key switch KS passes through
Concatenated first switch S1, the second current-limiting resistance R2 are connect with the positive input terminal of the second optocoupler V2；The input terminal b of key switch KS
It is connect by the first current-limiting resistance R1 with the positive input terminal of the first optocoupler V1, output end c is connect with the anode in TTL signal source, TTL
The negative terminal of signal source is connect with the negative input end of the first optocoupler V1；First optocoupler V1, the second optocoupler V2 positive output end with electricity
The enable end of source system connects, and negative output terminal is connect with the negative input end of power-supply system.
Due to the adoption of the technical scheme as described above, the utility model has the following advantages:
The power supply mixes control circuit, and principle is simple, securely and reliably, easily designed, convenient for operation, can pass through control
The working condition of key switch KS plays the role of controlling power-supply system to adjust the control mode of switch or Transistor-Transistor Logic level, and
And between the two be it is independent, be independent of each other, efficiently solve because needing to make can control using different under special environment condition
Mode is come the problem of controlling the same power-supply system.
Detailed description of the invention
Fig. 1 is the schematic diagram of one of the utility model power supply mixing control circuit working condition；
Fig. 2 is two schematic diagram of the utility model power supply mixing control circuit working condition.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawings and examples.
As shown in Figure 1, 2, which mixes control circuit comprising auxiliary source, key switch KS, TTL signal source, first
Current-limiting resistance R1, the second current-limiting resistance R2, first switch S1, the first optocoupler V1, the second optocoupler V2, power-supply system, auxiliary source
Anode is connected with the input terminal a of key switch KS, and negative terminal is connect with the negative input end of the second optocoupler V2, the output of key switch KS
End d is connect by concatenated first switch S1, the second current-limiting resistance R2 with the positive input terminal of the second optocoupler V2；Key switch KS's
Input terminal b is connect by the first current-limiting resistance R1 with the positive input terminal of the first optocoupler V1, the anode of output end c and TTL signal source
Connection, the negative terminal in TTL signal source are connect with the negative input end of the first optocoupler V1；The positive output of first optocoupler V1, the second optocoupler V2
End is connect with the enable end of power-supply system, and negative output terminal is connect with the negative input end of power-supply system.
As shown in Figure 1, disconnecting using the circuit that TTL signal source controls the first optocoupler V1, first switch S1 control the is connected
The control loop of two optocoupler V2, the enable end of power-supply system is controlled by adjusting the state of first switch S1.
Contact b, c of key switch KS is connected, contact a, e connection, is that first switch S1 is playing control action, TTL signal
Source is unable to control power-supply system；When first switch S1 is off-state, auxiliary source and the second current-limiting resistance R2 are disconnected, the second optocoupler
The positive and negative input terminal of V2 can not be connected, and positive and negative output end is off-state, at this point, the positive and negative output end of the first optocoupler V1
For off-state, then the enable end of power-supply system is high level state；When first switch S1 is closed state, auxiliary source and second
Current-limiting resistance R2 is connected, and the positive and negative input terminal conducting of the second optocoupler V2, positive and negative output end is on state, at this point, the first light
The positive and negative output end of coupling V1 is also off-state, then the enable end of power-supply system is low level state；It follows that first opens
The output state of power-supply system can be controlled by closing S1.
As shown in Fig. 2, disconnecting using the control loop that first switch S1 controls the second optocoupler V2, the first TTL signal is connected
Source controls the circuit of the first optocoupler V1, and the enable end of power-supply system is controlled by adjusting the level in TTL signal source.
Contact a, f of key switch KS is connected, contact b, d connection, is that control action, first switch are being played in TTL signal source
S1 is unable to control power-supply system.When TTL signal source is high level, when TTL signal source is high level, the anode in TTL signal source
(TTL+) by the first current-limiting resistance R1 the positive and negative input terminal of the first optocoupler V1 is connected, positive and negative output end is conducting shape
State, at this point, the positive and negative output end of the second optocoupler V2 is off-state, then the enable end of power-supply system is low level state； TTL
When signal source is low level, the anode (TTL+) in TTL signal source can not make the first optocoupler V1's by the first current-limiting resistance R1
Positive and negative input terminal conducting, positive and negative output end is then off-state, at this point, the positive and negative output end of the second optocoupler V2 is to disconnect shape
State, then the enable end of power-supply system is high level state.It follows that TTL signal source can also control the output of power-supply system
State.
The utility model power supply mixes control circuit, and control mode is by adjusting the first optocoupler V1 and the second optocoupler V2
Logical relation so that change TTL signal source and the power-supply system enable end under first switch S1 different conditions low and high level shape
State.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (1)
1. a kind of power supply mixes control circuit, it is characterized in that: it includes auxiliary source, key switch KS, TTL signal source, the first limit
Leakage resistance R1, the second current-limiting resistance R2, first switch S1, the first optocoupler V1, the second optocoupler V2, power-supply system, auxiliary source is just
End is connected with the input terminal a of key switch KS, and negative terminal is connect with the negative input end of the second optocoupler V2, the output end of key switch KS
D is connect by concatenated first switch S1, the second current-limiting resistance R2 with the positive input terminal of the second optocoupler V2；Key switch KS's is defeated
Enter to hold b to connect by the first current-limiting resistance R1 with the positive input terminal of the first optocoupler V1, the anode in output end c and TTL signal source connects
It connects, the negative terminal in TTL signal source is connect with the negative input end of the first optocoupler V1；The positive output end of first optocoupler V1, the second optocoupler V2
It is connect with the enable end of power-supply system, negative output terminal is connect with the negative input end of power-supply system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920168190.6U CN209388130U (en) | 2019-01-31 | 2019-01-31 | A kind of power supply mixing control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920168190.6U CN209388130U (en) | 2019-01-31 | 2019-01-31 | A kind of power supply mixing control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209388130U true CN209388130U (en) | 2019-09-13 |
Family
ID=67854289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920168190.6U Expired - Fee Related CN209388130U (en) | 2019-01-31 | 2019-01-31 | A kind of power supply mixing control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209388130U (en) |
-
2019
- 2019-01-31 CN CN201920168190.6U patent/CN209388130U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190913 |
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| CF01 | Termination of patent right due to non-payment of annual fee |