CN208674890U - A kind of alternating current-direct current detection automatic switchover load circuit - Google Patents
A kind of alternating current-direct current detection automatic switchover load circuit Download PDFInfo
- Publication number
- CN208674890U CN208674890U CN201821305849.XU CN201821305849U CN208674890U CN 208674890 U CN208674890 U CN 208674890U CN 201821305849 U CN201821305849 U CN 201821305849U CN 208674890 U CN208674890 U CN 208674890U
- Authority
- CN
- China
- Prior art keywords
- resistance
- capacitor
- electrically connected
- conversion circuit
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Rectifiers (AREA)
Abstract
It is detected the utility model discloses a kind of alternating current-direct current and automatically switches load circuit.It includes controller, AC detection circuit, DC detection circuit, first switch module and second switch module, AC detection circuit includes exchange input interface, AC-DC conversion circuit and first voltage detection circuit, DC detection circuit includes direct current input interface, DC-DC conversion circuit and second voltage detection circuit, exchange input interface is electrically connected with the input terminal of AC-DC conversion circuit, first output end of AC-DC conversion circuit is electrically connected with the input terminal of first voltage detection circuit, exchange input interface, first switch module, AC load series connection, the direct current input interface is electrically connected with the input terminal of DC-DC conversion circuit, first output end of DC-DC conversion circuit is electrically connected with the input terminal of second voltage detection circuit, direct current input interface, second switch module, DC load Series connection.The utility model is able to detect the alternating current of input, direct current, and switches corresponding AC load, DC load work.
Description
Technical field
The utility model relates to load automatic switch technical fields more particularly to a kind of detection of alternating current-direct current to automatically switch load
Circuit.
Background technique
Portable electronics or moving tool, such as coffee machine, heating cup, dust catcher, electric tool etc. are general portable
Formula or mobile product all use external connection battery or DC power supply (such as automobile) to meet outdoor use, and household electrical appliance usually use
Plug links alternating current, various so as to cause family's similar product.Such as user wants to drink one cup of Hot Coffee or heat outdoors very much
Water, it is often necessary to which purchase uses the coffee machine or kettle of direct current, and also needs to drink Hot Coffee in family and drink hot water needs
Purchase the coffee machine or insulating pot using alternating current.
Summary of the invention
In order to solve the above-mentioned technical problem the utility model, provides a kind of alternating current-direct current detection automatic switchover load circuit,
Its alternating current for being able to detect input, direct current, and switch corresponding AC load, DC load work, so that electric appliance can fill
AC load, DC load are carried, can use outdoors can also use in family.
To solve the above-mentioned problems, the utility model is achieved using following technical scheme:
Load circuit is automatically switched in a kind of alternating current-direct current detection of the utility model, which is characterized in that including controller, exchange
Detection circuit, DC detection circuit, first switch module and second switch module, the AC detection circuit include exchange input
Interface, AC-DC conversion circuit and first voltage detection circuit, the DC detection circuit include direct current input interface, DC-DC turns
Circuit and second voltage detection circuit are changed, the exchange input interface is electrically connected with the input terminal of AC-DC conversion circuit, described
First output end of AC-DC conversion circuit is electrically connected with the input terminal of first voltage detection circuit, the AC-DC conversion circuit
Second output terminal is electrically connected with the power end of controller, the exchange input interface, first switch module, AC load series connection,
The direct current input interface is electrically connected with the input terminal of DC-DC conversion circuit, the first output end of the DC-DC conversion circuit with
The input terminal of second voltage detection circuit is electrically connected, the second output terminal of the DC-DC conversion circuit and the power end of controller
Electrical connection, the direct current input interface, second switch module, DC load series connection, the controller are examined with first voltage respectively
The output end of slowdown monitoring circuit, the output end of second voltage detection circuit, first switch module control terminal, second switch module control
End electrical connection processed.
In the technical scheme, when exchanging input interface access AC power source, AC-DC conversion circuit is converted into two
Road DC voltage, DC voltage is powered to controller all the way, and controller detects another way direct current by first voltage detection circuit
Voltage judges whether there is AC power source access according to testing result, if there is AC power source accesses, then controls first switch module
Closure, so that AC load connects AC power source work.
When direct current input interface accesses DC power supply, DC-DC conversion circuit is converted into two-way DC voltage, all the way
DC voltage is powered to controller, and controller has detected whether AC power source access by first voltage detection circuit, due to this
Shi Buhui detects that AC power source accesses, so controller detects the another of DC-DC conversion circuit by second voltage detection circuit
DC voltage all the way judges whether there is DC power supply access according to testing result, if there is DC power supply accesses, then controls second
Switch module closure, so that DC load connects DC power supply work.
This programme can be detected automatically, and according to testing result in AC power source or DC power supply access electric appliance
Automatically switch the AC load or DC load work in electric appliance, so that electric appliance can load AC load, DC load, Ji Neng
Open air uses and can also use in family.
Preferably, the AC-DC conversion circuit include protective tube F1, varistor RV1, transformer T1, rectifier bridge VC,
Capacitor C2, capacitor EC2, resistance R1, voltage-stablizer U3, capacitor C5, diode D7, capacitor EC3 and capacitor C4, the one end protective tube F1 with
Exchange the electrical connection of input interface zero line, the protective tube F1 other end and the one end varistor RV1, transformer T1 primary coil one end
Electrical connection, the varistor RV1 other end are electrically connected with exchange input interface zero line side, the transformer T1 primary coil other end, become
Depressor T1 secondary coil both ends are electrically connected with two input terminals of rectifier bridge VC respectively, the first output end and capacitor of rectifier bridge VC
The one end C2, the one end capacitor EC2, the electrical connection of the one end resistance R1, the resistance R1 other end are electrically connected with voltage-stablizer U3 input terminal, voltage-stablizer
U3 output end is electrically connected with the one end capacitor C5, diode D7 anode, diode D7 cathode and the one end capacitor EC3, the one end capacitor C4
Electrical connection, the second output terminal of rectifier bridge VC, the capacitor C2 other end, the capacitor EC2 other end, voltage-stablizer U3 ground terminal, capacitor C5
The other end, the capacitor EC3 other end, the capacitor C4 other end are all grounded, and the first output end of rectifier bridge VC is AC-DC conversion circuit
First output end, diode D7 cathode are the second output terminal of AC-DC conversion circuit.
Preferably, the first voltage detection circuit includes resistance R9, resistance R10, resistance R11, resistance R12, capacitor
C7 and triode Q4, the one end resistance R10 are electrically connected with the first output end of rectifier bridge VC, the resistance R10 other end and triode Q4
Base stage, the electrical connection of the one end resistance R9, triode Q4 collector are electrically connected with the one end resistance R11, the one end resistance R12, and resistance R11 is another
One end is electrically connected with diode D7 cathode, and the resistance R12 other end is electrically connected with the one end capacitor C7, controller, the resistance R9 other end,
Triode Q4 emitter, the capacitor C7 other end are all grounded.
Preferably, the DC-DC conversion circuit includes protective tube F2, varistor RV2, diode D5, resistance R2, electricity
Hold EC4, voltage-stablizer U1, capacitor EC1, diode D6, the one end protective tube F2 is electrically connected with the positive terminal of direct current input interface, is insured
The pipe F2 other end is electrically connected with diode D5 anode, the one end varistor RV2, and diode D5 cathode is electrically connected with the one end resistance R2
It connects, the resistance R2 other end is electrically connected with the one end capacitor EC4, voltage-stablizer U1 input terminal, voltage-stablizer U1 output end and capacitor EC1 mono-
End, the electrical connection of diode D6 anode, it is the negative pole end of direct current input interface, the varistor RV2 other end, the capacitor EC4 other end, steady
Depressor U1 ground terminal, the capacitor EC1 other end are all grounded, and diode D5 cathode is the first output end of DC-DC conversion circuit, two poles
Pipe D6 cathode is the second output terminal of DC-DC conversion circuit.
Preferably, the second voltage detection circuit includes resistance R14, resistance R17, resistance R18, resistance R29, resistance
R30, resistance R32, resistance R33, capacitor C9, triode Q8 and triode Q9, the emitter and diode D5 cathode of triode Q9,
The electrical connection of the one end resistance R29, the resistance R29 other end are electrically connected with triode Q9 base stage, the one end resistance R33, the resistance R33 other end
It is electrically connected with the collector of triode Q8, the base stage of triode Q8 is electrically connected with the one end resistance R30, the one end resistance R32, resistance
The R32 other end is electrically connected with the controller, the resistance R30 other end, triode Q8 emitter be all grounded, the collector of triode Q9
It being electrically connected with the one end resistance R17, the resistance R17 other end is electrically connected with the one end resistance R14, the one end capacitor C9, the one end resistance R18,
The resistance R18 other end is electrically connected with the controller, and the resistance R14 other end, the capacitor C9 other end are all grounded.
The beneficial effects of the utility model are: can be examined automatically in AC power source or DC power supply access electric appliance
It surveys, and automatically switches the AC load in electric appliance or DC load work according to testing result, so that electric appliance can load exchange and bear
It carries, DC load, can use outdoors can also use in family.
Detailed description of the invention
Fig. 1 is a kind of circuit theory connection block diagram of the utility model；
Fig. 2 is the circuit diagram of AC-DC conversion circuit；
Fig. 3 is the circuit diagram of first voltage detection circuit；
Fig. 4 is the circuit diagram of DC-DC conversion circuit；
Fig. 5 is the circuit diagram of second voltage detection circuit；
Fig. 6 is the circuit diagram of first switch module；
Fig. 7 is the circuit diagram of second switch module.
In figure: 1, controller, 2, exchange input interface, 3, AC-DC conversion circuit, 4, first voltage detection circuit, 5, straight
Stream input interface, 6, DC-DC conversion circuit, 7, second voltage detection circuit, 8, first switch module, 9, second switch module,
10, AC load, 11, DC load.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment: load circuit is automatically switched in a kind of alternating current-direct current detection of the present embodiment, as shown in Figure 1, including controller
1, AC detection circuit, DC detection circuit, first switch module 8 and second switch module 9, AC detection circuit include exchange
Input interface 2, AC-DC conversion circuit 3 and first voltage detection circuit 4, DC detection circuit include direct current input interface 5, DC-
DC conversion circuit 6 and second voltage detection circuit 7, exchange input interface 2 are electrically connected with the input terminal of AC-DC conversion circuit 3,
First output end of AC-DC conversion circuit 3 is electrically connected with the input terminal of first voltage detection circuit 4, AC-DC conversion circuit 3
Second output terminal is electrically connected with the power end of controller 1, and exchange input interface 2, first switch module 8, AC load 10 are connected,
Direct current input interface 5 is electrically connected with the input terminal of DC-DC conversion circuit 6, the first output end of DC-DC conversion circuit 6 and second
The input terminal of voltage detecting circuit 7 is electrically connected, and the second output terminal of DC-DC conversion circuit 6 and the power end of controller 1 are electrically connected
Connect, direct current input interface 5, second switch module 9, DC load 11 connect, controller 1 respectively with first voltage detection circuit 4
Output end, the output end of second voltage detection circuit 7, the control terminal of first switch module 8, second switch module 9 control
End electrical connection.
As shown in Fig. 2, AC-DC conversion circuit 3 includes protective tube F1, varistor RV1, transformer T1, rectifier bridge VC, electricity
Hold C2, capacitor EC2, resistance R1, voltage-stablizer U3, capacitor C5, diode D7, capacitor EC3 and capacitor C4, the one end protective tube F1 and friendship
Flow the electrical connection of 2 zero line of input interface, the protective tube F1 other end and the one end varistor RV1, transformer T1 primary coil one end
Electrical connection, the varistor RV1 other end are electrically connected with exchange 2 zero line side of input interface, the transformer T1 primary coil other end, become
Depressor T1 secondary coil both ends are electrically connected with two input terminals of rectifier bridge VC respectively, the first output end and capacitor of rectifier bridge VC
The one end C2, the one end capacitor EC2, the electrical connection of the one end resistance R1, the resistance R1 other end are electrically connected with voltage-stablizer U3 input terminal, voltage-stablizer
U3 output end is electrically connected with the one end capacitor C5, diode D7 anode, diode D7 cathode and the one end capacitor EC3, the one end capacitor C4
Electrical connection, the second output terminal of rectifier bridge VC, the capacitor C2 other end, the capacitor EC2 other end, voltage-stablizer U3 ground terminal, capacitor C5
The other end, the capacitor EC3 other end, the capacitor C4 other end are all grounded, and the first output end of rectifier bridge VC is AC-DC conversion circuit
First output end, diode D7 cathode are the second output terminal of AC-DC conversion circuit.
As shown in figure 3, first voltage detection circuit 4 includes resistance R9, resistance R10, resistance R11, resistance R12, capacitor C7
With triode Q4, the one end resistance R10 is electrically connected with the first output end of rectifier bridge VC, the resistance R10 other end and triode Q4 base
Pole, the electrical connection of the one end resistance R9, triode Q4 collector are electrically connected with the one end resistance R11, the one end resistance R12, and resistance R11 is another
End is electrically connected with diode D7 cathode, and the resistance R12 other end and the I/O port pAcSignal of the one end capacitor C7, controller 1 are electrically connected
It connects, the resistance R9 other end, triode Q4 emitter, the capacitor C7 other end are all grounded.
When exchange input interface access AC power source (such as alternating current) obtains direct current+12VPP after AC-DC conversion circuit
With+5V power supply.
When having AC power source access ,+12VPP is output to triode Q4 base stage, triode Q4 conducting, the I/O port of controller
PAcSignal voltage is about 0.3V, is " low level ", and controller judgement has AC power source access.
When not having AC power source access, triode Q4 base stage does not have+12VPP input, and triode Q4 base stage is high-impedance state shape
State, triode Q4 cut-off, the I/O port pAcSignal voltage of controller is about 5V, is " high level ", and controller judgement does not exchange
Plant-grid connection.
As shown in figure 4, DC-DC conversion circuit 6 includes protective tube F2, varistor RV2, diode D5, resistance R2, capacitor
EC4, voltage-stablizer U1, capacitor EC1, diode D6, the one end protective tube F2 are electrically connected with the positive terminal of direct current input interface 5, insurance
The pipe F2 other end is electrically connected with diode D5 anode, the one end varistor RV2, and diode D5 cathode is electrically connected with the one end resistance R2
It connects, the resistance R2 other end is electrically connected with the one end capacitor EC4, voltage-stablizer U1 input terminal, voltage-stablizer U1 output end and capacitor EC1 mono-
End, the electrical connection of diode D6 anode, the negative pole end of direct current input interface 5, the varistor RV2 other end, the capacitor EC4 other end,
Voltage-stablizer U1 ground terminal, the capacitor EC1 other end are all grounded, diode D5 cathode be DC-DC conversion circuit the first output end, two
Pole pipe D6 cathode is the second output terminal of DC-DC conversion circuit.
As shown in figure 5, second voltage detection circuit 7 includes resistance R14, resistance R17, resistance R18, resistance R29, resistance
R30, resistance R32, resistance R33, capacitor C9, triode Q8 and triode Q9, the emitter and diode D5 cathode of triode Q9,
The electrical connection of the one end resistance R29, the resistance R29 other end are electrically connected with triode Q9 base stage, the one end resistance R33, the resistance R33 other end
It is electrically connected with the collector of triode Q8, the base stage of triode Q8 is electrically connected with the one end resistance R30, the one end resistance R32, resistance
The R32 other end is electrically connected with the I/O port pDcPro of controller 1, the resistance R30 other end, triode Q8 emitter be all grounded, three
The collector of pole pipe Q9 is electrically connected with the one end resistance R17, the resistance R17 other end and the one end resistance R14, the one end capacitor C9, resistance
The electrical connection of the one end R18, the resistance R18 other end are electrically connected with the I/O port pBatterySignal of controller 1, the resistance R14 other end,
The capacitor C9 other end is all grounded.
When direct current input interface accesses DC power supply, after DC-DC conversion circuit, direct current+18VA and+5V electricity is obtained
Source.
Controller has first detected whether AC power source access, if accessed without AC power source, the I/O port of controller
PDcPro exports high level, and triode Q8 conducting, when there is DC power supply access ,+18VA is output to resistance R29, triode Q9
Emitter, triode Q9 conducting, the I/O port pBatterySignal voltage of controller is about 4.5V, is " high level ", controller
Judgement has DC power supply access；When not having DC power supply access, resistance R29, triode Q9 emitter do not have+18VA input,
Triode Q9 cut-off, the I/O port pBatterySignal voltage of controller is about 0V, is " low level ", and controller judgement does not have
DC power supply access.
When exchanging input interface access AC power source, AC-DC conversion circuit is converted into two-way DC voltage, all the way
DC voltage is powered to controller, and controller detects another way DC voltage by first voltage detection circuit, is tied according to detection
Fruit judges whether there is AC power source access, if there is AC power source accesses, then first switch module closure is controlled, so that exchange is negative
It carries and connects AC power source work.
When direct current input interface accesses DC power supply, DC-DC conversion circuit is converted into two-way DC voltage, all the way
DC voltage is powered to controller, and controller has detected whether AC power source access by first voltage detection circuit, due to this
Shi Buhui detects that AC power source accesses, so controller detects the another of DC-DC conversion circuit by second voltage detection circuit
DC voltage all the way judges whether there is DC power supply access according to testing result, if there is DC power supply accesses, then controls second
Switch module closure, so that DC load connects DC power supply work.
The circuit diagram of first switch module, as shown in fig. 6, the circuit diagram of second switch module, as shown in Figure 7.Controller
For single-chip microcontroller.
When the I/O port pAcSignal of controller is " low level ", it is determined as AC power source power supply, the I/O port of controller
PRelayAC exports " high level ", triode Q1 conducting, and relay RY1 coil obtains electric, the contact switch closure of relay RY1,
AC load work.
When the I/O port pAcSignal of controller is " high level " and I/O port pBatterySignal is " high level ",
It is determined as DC power supply power supply, the I/O port pRelayDC+ and I/O port pRelayDC- of controller are exported " high level " simultaneously, three poles
Pipe Q2 and triode Q3 conducting, relay RY2 and relay RY3 coil obtain electric, contact switch, the relay RY3 of relay RY2
Contact switch closure, DC load work.
This programme can be detected automatically, and according to testing result in AC power source or DC power supply access electric appliance
Automatically switch the AC load or DC load work in electric appliance, so that electric appliance can load AC load, DC load, Ji Neng
Open air uses and can also use in family.
Claims (5)
1. load circuit is automatically switched in a kind of detection of alternating current-direct current, which is characterized in that including controller (1), AC detection circuit, straight
Current detection circuit, first switch module (8) and second switch module (9), the AC detection circuit include exchange input interface
(2), AC-DC conversion circuit (3) and first voltage detection circuit (4), the DC detection circuit include direct current input interface
(5), DC-DC conversion circuit (6) and second voltage detection circuit (7), the exchange input interface (2) and AC-DC conversion circuit
(3) input terminal electrical connection, the first output end of the AC-DC conversion circuit (3) and the input of first voltage detection circuit (4)
End electrical connection, the second output terminal of the AC-DC conversion circuit (3) are electrically connected with the power end of controller (1), and the exchange is defeated
Incoming interface (2), first switch module (8), AC load (10) series connection, the direct current input interface (5) and DC-DC conversion circuit
(6) input terminal electrical connection, the first output end of the DC-DC conversion circuit (6) and the input of second voltage detection circuit (7)
End electrical connection, the second output terminal of the DC-DC conversion circuit (6) are electrically connected with the power end of controller (1), and the direct current is defeated
Incoming interface (5), second switch module (9), DC load (11) series connection, the controller (1) detect electricity with first voltage respectively
The output end on road (4), the output end of second voltage detection circuit (7), the control terminal of first switch module (8), second switch mould
The control terminal of block (9) is electrically connected.
2. load circuit is automatically switched in a kind of alternating current-direct current detection according to claim 1, which is characterized in that the AC-DC
Conversion circuit (3) include protective tube F1, varistor RV1, transformer T1, rectifier bridge VC, capacitor C2, capacitor EC2, resistance R1,
Voltage-stablizer U3, capacitor C5, diode D7, capacitor EC3 and capacitor C4, the one end protective tube F1 with exchange input interface (2) zero line
Electrical connection, the protective tube F1 other end are electrically connected with the one end varistor RV1, transformer T1 primary coil one end, varistor RV1
The other end is electrically connected with exchange input interface (2) zero line side, the transformer T1 primary coil other end, transformer T1 secondary coil two
End is electrically connected with two input terminals of rectifier bridge VC respectively, the first output end of rectifier bridge VC and the one end capacitor C2, capacitor EC2 mono-
End, the electrical connection of the one end resistance R1, the resistance R1 other end are electrically connected with voltage-stablizer U3 input terminal, voltage-stablizer U3 output end and capacitor C5
One end, the electrical connection of diode D7 anode, diode D7 cathode are electrically connected with the one end capacitor EC3, the one end capacitor C4, rectifier bridge VC's
Second output terminal, the capacitor C2 other end, the capacitor EC2 other end, voltage-stablizer U3 ground terminal, the capacitor C5 other end, capacitor EC3 are another
End, the capacitor C4 other end are all grounded, and the first output end of rectifier bridge VC is first output end of AC-DC conversion circuit (3), two poles
Pipe D7 cathode is the second output terminal of AC-DC conversion circuit (3).
3. load circuit is automatically switched in a kind of alternating current-direct current detection according to claim 2, which is characterized in that first electricity
Pressing detection circuit (4) includes resistance R9, resistance R10, resistance R11, resistance R12, capacitor C7 and triode Q4, the one end resistance R10
It being electrically connected with the first output end of rectifier bridge VC, the resistance R10 other end is electrically connected with triode Q4 base stage, the one end resistance R9, and three
Pole pipe Q4 collector is electrically connected with the one end resistance R11, the one end resistance R12, and the resistance R11 other end is electrically connected with diode D7 cathode
It connects, the resistance R12 other end is electrically connected with the one end capacitor C7, controller (1), the resistance R9 other end, triode Q4 emitter, capacitor
The C7 other end is all grounded.
4. load circuit is automatically switched in a kind of alternating current-direct current detection according to claim 1, which is characterized in that the DC-DC
Conversion circuit (6) include protective tube F2, varistor RV2, diode D5, resistance R2, capacitor EC4, voltage-stablizer U1, capacitor EC1,
Diode D6, the one end protective tube F2 are electrically connected with the positive terminal of direct current input interface (5), the protective tube F2 other end and diode D5
Anode, the electrical connection of the one end varistor RV2, diode D5 cathode are electrically connected with the one end resistance R2, the resistance R2 other end and capacitor
The one end EC4, the electrical connection of voltage-stablizer U1 input terminal, voltage-stablizer U1 output end are electrically connected with the one end capacitor EC1, diode D6 anode,
Negative pole end, the varistor RV2 other end, the capacitor EC4 other end, the voltage-stablizer U1 ground terminal, capacitor of direct current input interface (5)
The EC1 other end is all grounded, and diode D5 cathode is first output end of DC-DC conversion circuit (6), and diode D6 cathode is DC-
The second output terminal of DC conversion circuit (6).
5. load circuit is automatically switched in a kind of alternating current-direct current detection according to claim 4, which is characterized in that second electricity
Pressing detection circuit (7) includes resistance R14, resistance R17, resistance R18, resistance R29, resistance R30, resistance R32, resistance R33, capacitor
The emitter of C9, triode Q8 and triode Q9, triode Q9 are electrically connected with diode D5 cathode, the one end resistance R29, resistance
The R29 other end is electrically connected with triode Q9 base stage, the one end resistance R33, and the resistance R33 other end and the collector of triode Q8 are electrically connected
It connects, the base stage of triode Q8 is electrically connected with the one end resistance R30, the one end resistance R32, and the resistance R32 other end is electrically connected with controller (1)
Connect, the resistance R30 other end, triode Q8 emitter be all grounded, the collector of triode Q9 is electrically connected with the one end resistance R17,
The resistance R17 other end is electrically connected with the one end resistance R14, the one end capacitor C9, the one end resistance R18, the resistance R18 other end and controller
(1) it is electrically connected, the resistance R14 other end, the capacitor C9 other end are all grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821305849.XU CN208674890U (en) | 2018-08-14 | 2018-08-14 | A kind of alternating current-direct current detection automatic switchover load circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821305849.XU CN208674890U (en) | 2018-08-14 | 2018-08-14 | A kind of alternating current-direct current detection automatic switchover load circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208674890U true CN208674890U (en) | 2019-03-29 |
Family
ID=65837113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821305849.XU Active CN208674890U (en) | 2018-08-14 | 2018-08-14 | A kind of alternating current-direct current detection automatic switchover load circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208674890U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114123471A (en) * | 2021-11-29 | 2022-03-01 | 常州超声电子有限公司 | AC/DC power supply circuit of ultrasonic detection equipment |
| CN114221530A (en) * | 2021-11-04 | 2022-03-22 | 深圳市海浦蒙特科技有限公司 | Switching power supply circuit compatible with AC/DC power supply input and electronic equipment |
| CN114633640A (en) * | 2022-01-17 | 2022-06-17 | 中车青岛四方机车车辆股份有限公司 | Power switching system and method of railway vehicle and railway vehicle |
-
2018
- 2018-08-14 CN CN201821305849.XU patent/CN208674890U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114221530A (en) * | 2021-11-04 | 2022-03-22 | 深圳市海浦蒙特科技有限公司 | Switching power supply circuit compatible with AC/DC power supply input and electronic equipment |
| CN114221530B (en) * | 2021-11-04 | 2024-03-15 | 深圳市海浦蒙特科技有限公司 | Switch power supply circuit compatible with AC/DC power supply input and electronic equipment |
| CN114123471A (en) * | 2021-11-29 | 2022-03-01 | 常州超声电子有限公司 | AC/DC power supply circuit of ultrasonic detection equipment |
| CN114633640A (en) * | 2022-01-17 | 2022-06-17 | 中车青岛四方机车车辆股份有限公司 | Power switching system and method of railway vehicle and railway vehicle |
| CN114633640B (en) * | 2022-01-17 | 2023-09-26 | 中车青岛四方机车车辆股份有限公司 | Power switching system and method of railway vehicle and railway vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208674890U (en) | A kind of alternating current-direct current detection automatic switchover load circuit | |
| CN202094430U (en) | Intelligent and anti-electric shock safety socket | |
| CN205178188U (en) | Safety socket | |
| CN106655431A (en) | Charger circuit capable of automatically adjusting current | |
| CN202633675U (en) | Intelligent socket with detection control | |
| CN204088777U (en) | A kind of household electricity monitoring intelligent socket | |
| CN106357128A (en) | Voltage conversion control circuit and household appliance | |
| CN208274315U (en) | A kind of sensor circuit and the hair dryer based on sensor circuit | |
| CN103401215B (en) | A kind of over-and under-voltage protection circuit, protection socket and terminal | |
| CN105429486A (en) | Standby power source circuit capable of realizing power consumption lower than 0.1uw | |
| CN202662913U (en) | Intelligent socket | |
| CN209676138U (en) | A kind of Switching Power Supply | |
| CN106786397A (en) | Voltage protection circuit based on circuit rectifies bridge | |
| CN206595751U (en) | Possesses the charger of automatic identification input voltage function | |
| CN206727881U (en) | A kind of flatiron power intelligent switching circuit | |
| CN207426673U (en) | The hardware circuit of control and protective switch equipment | |
| CN204761141U (en) | Overload protection device double loop power supply automatic switch -over circuit | |
| CN201541113U (en) | Controller capable of automatic electricity restriction | |
| CN206180884U (en) | A circuit for brownout power | |
| CN215072154U (en) | But remote control's thing networking wiring board | |
| CN205246752U (en) | Collection system of power consumption information | |
| CN215729345U (en) | Control circuit of intelligent household vacuum sealing machine | |
| CN217388211U (en) | Novel synthesize household electrical appliances overvoltage protector | |
| CN204696962U (en) | A kind of starting of three phases motor controller | |
| CN217007630U (en) | Short circuit detection circuit and intelligent socket with short circuit detection function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |