CN214540470U - Power adapter - Google Patents
Power adapter Download PDFInfo
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- CN214540470U CN214540470U CN202120655883.5U CN202120655883U CN214540470U CN 214540470 U CN214540470 U CN 214540470U CN 202120655883 U CN202120655883 U CN 202120655883U CN 214540470 U CN214540470 U CN 214540470U
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- power
- power supply
- control module
- module
- water heater
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Abstract
The utility model discloses a power adapter, which relates to the technical field of power supply and comprises a power module and a control module; the power supply module is used for supplying working voltage to the control module and also used for supplying a direct-current stabilized voltage supply to a load; compared with the prior art, the control module is used for controlling the power module to be switched off or switched on a loaded direct-current stabilized voltage power supply, when the water heater discharges water, the commercial power of the water heater can be switched off by utilizing the relay of the water heater, a switching-off mechanism is not required to be additionally arranged, the safety is improved, meanwhile, the existing device is fully utilized, and the cost is reduced.
Description
Technical Field
The utility model relates to a power technical field especially relates to a power adapter.
Background
Along with the improvement of living standard, domestic appliance's prevalence is also higher and higher, and some electrical apparatus do not need to switch on the power when the user uses, for example when the water heater is going out water, the power of disconnection water heater is safer.
The invention 106936293a in china discloses an output voltage regulating circuit of a power adapter, which comprises: the current detection module is used for detecting the output current of the power adapter; the first input end is connected with the first terminal of the current detection module, and the second input end is connected with the signal amplification module of the second terminal of the current detection module; the input end is connected with the output end and the feedback end of the signal amplification module, the first wiring end and the load are connected together, the output end is grounded, and the voltage feedback module feeds back the feedback voltage of the power adapter; the current detection pin connects with the second input end of second wiring end and signal amplification module altogether, voltage detection adjusts the feedback end that the pin connects voltage feedback module, detects and adjusts feedback voltage and adjusts the PWM control chip that power adapter's output voltage was adjusted, but this utility model can only be for the electrical apparatus power supply, can not be when the water heater goes out water, the power of disconnection water heater, and the security remains to improve.
SUMMERY OF THE UTILITY MODEL
First, technical problem to be solved
In view of the above-mentioned drawbacks of the prior art, how to improve the security of the conventional power adapter.
Second, technical scheme
In order to solve the above problems, a power adapter is provided, which includes a power module and a control module;
the power supply module is used for supplying working voltage to the control module and also used for supplying a direct-current stabilized voltage supply to a load;
the control module is used for controlling the power supply module to switch on or off the direct-current stabilized power supply of the load.
Wherein, the power module is a switch power supply.
The control module is also used for receiving a power-off signal sent by the load, and after receiving the signal, the control module controls the switching power supply to switch off the direct-current stabilized voltage power supply of the load.
After the time length of the switching power supply for switching off the direct-current stabilized power supply of the load reaches the preset time length, the control module controls the switching power supply to switch on the direct-current stabilized power supply of the load.
Wherein, the control module is MCU.
Wherein the control module is a 555 timing circuit.
Wherein the power-down signal is high.
Thirdly, the beneficial effects of the utility model
Compared with the prior art, the utility model discloses a set up control module, when the water heater goes out water, utilize the water heater to break off the commercial power of water heater from the relay of taking, need not additionally to set up disconnect-mechanism, when improving the security, make full use of existing device, the cost is reduced.
Drawings
Fig. 1 is a schematic circuit diagram of a control module according to embodiment 1 of the present invention;
fig. 2 is a schematic circuit diagram of a switching power supply according to embodiment 1 of the present invention;
fig. 3 is a schematic circuit diagram of a control module according to embodiment 2 of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Example 1:
the load is the water heater, and the water heater passes through data line communication with power adapter and is connected. A relay for disconnecting the mains supply is arranged in the water heater; when the water heater is out of water, the water heater sends a power-off signal to the power adapter.
As shown in fig. 2, the switching power supply provides a 12V regulated dc power supply for the control module and the water heater, and it should be noted that the switching power supply adopted in this embodiment is a common switching power supply, and the circuit structure of the switching power supply is not substantially improved; in addition, a person skilled in the art can replace the switching power supply in the present embodiment with any power supply capable of providing a regulated 12V.
As shown in fig. 1, a power-off signal of the water heater is INPUT to pin 4 of the MCU through the INPUT port, and after the MCU receives the signal, pin 2 of the MCU outputs a low level to turn off the MOS transistor M1, so that the switching power supply disconnects the 12V regulated dc power supply of the water heater; after the relay in the water heater is powered off, the commercial power of the water heater can be disconnected.
In this embodiment, the power-down signal is high.
After 10 seconds, the 2 pins of the MCU output high level again, and then the switching power supply is connected with a 12V voltage-stabilized direct-current power supply of the water heater. After the relay in the water heater is electrified again, the commercial power of the water heater can be switched on.
The preset time duration is 10 seconds in the present embodiment, and a person skilled in the art can adjust the preset time duration according to actual requirements.
Example 2:
the difference between this embodiment and embodiment 1 is that the control module of this embodiment mainly includes a 555 timer circuit composed of a 555 timer U1;
as shown in fig. 3, a power-off signal of the water heater is INPUT through the INPUT port, so that the transistor Q3 and the transistor Q4 are turned on, and further the voltage of the pin 6 of the 555 timer U1 is greater than 8V, when the voltage of the pin 6 of the 555 timer U1 is greater than 8V, the pin 3 of the 555 timer U1 outputs a low level, so that the MOS transistor M1 is turned off, and further the switching power supply is turned off from the 12V regulated dc power supply of the water heater;
after 10 seconds, the voltage of the pin 2 of the 555 timer U1 is lower than 4V, and the pin 3 of the 555 timer U1 outputs high level, so that the MOS tube M1 is conducted, and the switching power supply is connected with a 12V voltage-stabilized direct-current power supply of the water heater.
The preset time period can be adjusted by adjusting the parameters of the timing capacitor C2 and the timing capacitor C7 according to actual requirements by those skilled in the art.
Through setting up control module, when the water heater goes out water, utilize the relay of water heater self-bring can break off the commercial power of water heater, need not additionally to set up disconnection mechanism, when improving the security, make full use of existing device, the cost is reduced.
The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (7)
1. A power adapter, characterized in that, the power adapter comprises a power module and a control module;
the power supply module is used for supplying working voltage to the control module and also used for supplying a direct-current stabilized voltage supply to a load;
the control module is used for controlling the power supply module to switch on or off a direct-current stabilized power supply of a load.
2. The power adapter as claimed in claim 1, wherein said power module is a switching power supply.
3. The power adapter as claimed in claim 2, wherein the control module is further configured to receive a power-off signal from the load, and after the control module receives the power-off signal, the control module controls the switching power supply to turn off the dc regulated power supply of the load.
4. The power adapter as claimed in claim 3, wherein the control module controls the switching power supply to switch on the DC voltage-stabilized power supply of the load after the time period for switching off the DC voltage-stabilized power supply of the load reaches a preset time period.
5. The power adapter as claimed in claim 4, wherein the control module is an MCU.
6. The power adapter as claimed in claim 4, wherein the control module is a 555 timer circuit.
7. A power adapter as claimed in claim 3, wherein said power-down signal is high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120655883.5U CN214540470U (en) | 2021-03-31 | 2021-03-31 | Power adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120655883.5U CN214540470U (en) | 2021-03-31 | 2021-03-31 | Power adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214540470U true CN214540470U (en) | 2021-10-29 |
Family
ID=78267081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120655883.5U Active CN214540470U (en) | 2021-03-31 | 2021-03-31 | Power adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214540470U (en) |
-
2021
- 2021-03-31 CN CN202120655883.5U patent/CN214540470U/en active Active
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