CN206353696U - A kind of power supply output control circuit - Google Patents
A kind of power supply output control circuit Download PDFInfo
- Publication number
- CN206353696U CN206353696U CN201720057287.0U CN201720057287U CN206353696U CN 206353696 U CN206353696 U CN 206353696U CN 201720057287 U CN201720057287 U CN 201720057287U CN 206353696 U CN206353696 U CN 206353696U
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- China
- Prior art keywords
- power supply
- relay
- control circuit
- output control
- supply output
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Abstract
Power supply output control circuit of the present utility model, including metering circuit and power supply output control circuit, are characterised by：Power supply output control circuit is made up of relay J1, D.C mutual-inductor CT and triode Q1, and relay J1 coil is connected with triode Q1 to be followed by the two ends of control power supply；Power input L1 is connected to one end of relay J1 opened points, and power output end L2 is followed by the other end of corresponding opened point to D.C mutual-inductor CT input series connection.Power supply output control circuit of the present utility model, metering circuit passes through to the voltage detecting after relay normally open point, it can effectively detect whether power line occurs in that the situation of " can not disconnect ", metering circuit passes through the detection to current transformer output signal, it can effectively detect whether power line occurs in that the situation of " can not turn on ", it is ensured that the safe and stable operation of power supply line.
Description
Technical field
The utility model is related to a kind of power supply output control circuit, in particular, more particularly to one kind can effective detection
Go out whether power circuit the power supply output control circuit that can not be turned on or can not disconnect situation occurs.
Background technology
Current power output circuit is realized using by control relay output mostly.Relay is one kind by machine
The device of control is realized in tool action, at the scene due to action current, operation voltage, relay contact material and ring during use
The influence in border, can cause relay the failure that can not be turned on, can not disconnect occur.For example it is whole for unattended intelligent electricity selling
It for end, can not be turned in the event of relay, it will the phenomenon that user charges occurs and can not charge, compromise consumer's profit
Benefit；It can not be disconnected in the event of relay, then user can be charged without paying, and compromise the profit of electricity-selling terminal operator
Benefit.Existing general circuit can not be realized to be monitored to relay contact state.
The content of the invention
There is provided a kind of power supply output control circuit in order to overcome the shortcoming of above-mentioned technical problem for the utility model.
Power supply output control circuit of the present utility model, including metering circuit and power supply output control circuit, metering circuit
On be provided with control end, voltage detecting end, current detecting end, control end is used to export to be controlled to power supply output control circuit
High level signal or low level signal；It is characterized in that：The power supply output control circuit is by relay J1, D.C mutual-inductor
CT and triode Q1 compositions, relay J1 coil is connected with triode Q1 to be followed by the two ends of control power supply；Power input
L1 is connected to one end of relay J1 opened points, and power output end L2 is followed by corresponding normal to D.C mutual-inductor CT input series connection
The other end prescribed；D.C mutual-inductor CT output is terminated at the current detecting end of metering circuit, the voltage detecting of metering circuit
It is terminated on the power line between D.C mutual-inductor and opened point, the control of metering circuit is terminated in triode Q1 base stage.
Power supply output control circuit of the present utility model, the two ends of the relay J1 coils are parallel with resistance R1 and afterflow
Diode D4.
It is in series with power supply output control circuit of the present utility model, the circuit between the metering circuit and power line many
Individual resistance；The fuse F1 for preventing electric current excessive is in series with the power output end L2.
The beneficial effects of the utility model are：Power supply output control circuit of the present utility model, by by power input,
Output end is connected to the two ends of relay normally open point respectively, and the coil of relay is connected with triode two be followed by control power supply
End, under control of the control signal to triode on off operating mode, can be achieved the control to power supply break-make.Metering circuit passes through
To the voltage detecting after relay normally open point, it can effectively detect whether power line occurs in that the feelings of " can not disconnect "
Shape, metering circuit is by the detection to current transformer output signal, and can effectively detect whether power line occurs in that " can not
The situation of conducting ", it is ensured that the safe and stable operation of power supply line.
Brief description of the drawings
Fig. 1 is the application principle figure of power supply output control circuit of the present utility model；
Fig. 2 is the circuit diagram of power supply output control circuit of the present utility model.
In figure：1 metering circuit, 2 power supply output control circuits, 3 relay J1,4 current transformers, 5 triode Q1,6 protect
Dangerous silk F1.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, the application principle figure of power supply output control circuit of the present utility model is given, shown metering electricity
Control end, voltage detecting end and current detecting end are provided with road 1, control end is used to export to be carried out to power supply output control circuit
The high level signal or low level signal of control.Shown metering circuit 1 not only realizes the control to power line on off operating mode, and
And also realize the detection to voltage signal, current signal on power line.
As shown in Fig. 2 the circuit diagram of power supply output control circuit of the present utility model is given, shown power supply output control
The electric routing relay J1 of system, current transformer 4, triode Q1 compositions, relay J1 coil connected with triode Q1 be followed by
The two ends of power supply are controlled, shown controls power supply to be 12V；The control signal K1 that metering circuit is sent is connected to triode Q1 base stage
On.When the control signal K1 that metering circuit 1 is exported is high level, triode Q1 conductings, relay J1 coil obtains electric, relay
J1 normally closed point closure.When control signal K1 is low level, triode Q1 ends, and no current is passed through in relay J1 coil
Cross.
Shown relay J1（3）Coil two ends be parallel with resistance R1 and sustained diode 4, when triode Q1 is closed suddenly
Have no progeny, the induced-current that relay J1 coils are produced can be consumed by sustained diode 4 and resistance R1.
Shown power input L1 is connected to one end of relay J1 opened point, power output end L2 and current transformer
4 input series connection is followed by the other end of corresponding opened point, after relay J1 coil obtains electric, power input L1 and electricity
Source output terminal L2 is turned on, and power output end L2 can supplying power for outside.The output of D.C mutual-inductor 4 is terminated at the electric current of metering circuit 1
Test side, the voltage detecting of metering circuit 1 is terminated on the power line between current transformer 4 and opened point, to realize to electricity
The detection of source output terminal L2 voltage signals.Multiple resistance after being connected on shown voltage detecting line（Such as resistance R1, R2 and R3）, electricity
Fuse F1 is in series with source output terminal L2, to realize the protection to power circuit.
In use, when the control signal K1 that metering circuit 1 is exported is high level, now relay J1 opened point should
Closure, voltage detecting end should be able to detect voltage signal；If now, it is impossible to detect voltage, then show that supply line goes out
The situation of " can not turn on " is showed, should fix a breakdown in time.When control signal K1 is low level, now relay J1's is normally opened
Point should disconnect, and voltage detecting end can not detect voltage signal；If now, detecting voltage presence, and there is electric current output,
Show that supply line occurs in that the failure of " can not disconnect ", to fix a breakdown in time.
Claims (3)
1. a kind of power supply output control circuit, including metering circuit（1）With power supply output control circuit（2）, set on metering circuit
Control end, voltage detecting end, current detecting end are equipped with, control end is used to export the height for being controlled power supply output control circuit
Level signal or low level signal；It is characterized in that：The power supply output control circuit is by relay J1（3）, D.C mutual-inductor
CT（4）With triode Q1（5）Composition, relay J1 coil is connected with triode Q1 to be followed by the two ends of control power supply；Power supply
Input L1 is connected to one end of relay J1 opened points, power output end L2 connected with D.C mutual-inductor CT input be followed by
The other end of corresponding opened point；D.C mutual-inductor CT output is terminated at the current detecting end of metering circuit, the electricity of metering circuit
Pressure detection is terminated on the power line between D.C mutual-inductor and opened point, and the control of metering circuit is terminated at triode Q1 base
On extremely.
2. power supply output control circuit according to claim 1, it is characterised in that：The relay J1（3）The two of coil
End is parallel with resistance R1 and sustained diode 4.
3. power supply output control circuit according to claim 1 or 2, it is characterised in that：The metering circuit（1）With power supply
Multiple resistance are in series with circuit between line；The fuse F1 for preventing electric current excessive is in series with the power output end L2
（6）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720057287.0U CN206353696U (en) | 2017-01-18 | 2017-01-18 | A kind of power supply output control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720057287.0U CN206353696U (en) | 2017-01-18 | 2017-01-18 | A kind of power supply output control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206353696U true CN206353696U (en) | 2017-07-25 |
Family
ID=59349513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720057287.0U Active CN206353696U (en) | 2017-01-18 | 2017-01-18 | A kind of power supply output control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206353696U (en) |
-
2017
- 2017-01-18 CN CN201720057287.0U patent/CN206353696U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |