Adapter with alternating current blocking function

Abstract

The utility model belongs to the technical field of adapters, and particularly relates to an adapter with an alternating current blocking function. A first relay is connected between the power supply anode input end and the anode output end, and a second relay is connected between the power supply cathode input end and the cathode output end. The first relay and the second relay can be independent relays and can also be combined relays. The first relay and the second relay are connected to the chip at the same time. Meanwhile, the positive pole input end of the power supply is connected with the direct current detection circuit and the alternating current detection circuit and then connected to the chip, the negative pole input end of the power supply is connected with the chip, and the signal output end of the chip is connected with a direct current input indicator lamp, an alternating current input indicator lamp, a buzzer and a direct current output indicator lamp. Through cooperation of the detection circuit and the relay, input voltage is detected, the relay is driven by the chip to control on-off, and the problem of circuit damage caused by overvoltage, undervoltage and inconsistent input voltage types can be effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of adapter, especially an adapter with AC blocking function. BACKGROUND

[0002] Now, more and more DC electrical appliances are used, and low-voltage safety is convenient. Generally, the electrical appliances used indoors are equipped with adapters to convert the mains voltage into different DC voltages such as 36V, 24V, 12V, 5V and 3V for use. One appliance is equipped with one adapter to ensure normal use. However, when used outdoors, the input voltage is uncertain, and the AC and DC are uncertain, so it is impossible to configure a special adapter, which leads to the direct connection of the power supply, and the electrical appliances are directly burned. Especially in the era of e-commerce, online shopping, non-professional personnel, buy back products, direct connection, a few seconds later, the product is burned, and all aspects of loss and trouble come out. INVENTION CONTENT

[0003] To solve the defects and problems of the prior art, the utility model aims to provide an adapter with AC blocking function, which is simple in structure, reasonable in design and convenient to use. The adapter cooperates with the relay through the detection circuit to detect the input voltage, drives the relay through the chip, controls the on-off, and can effectively avoid the problems of overvoltage, undervoltage and input voltage type inconsistency causing circuit damage.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme: it contains relay one, relay two, chip, DC detection circuit, AC detection circuit, DC input indicator, AC input indicator, buzzer and DC output indicator. The positive input end of the power supply is connected with the positive output end of the relay one, and the negative input end of the power supply is connected with the negative output end of the relay two. The relay one and the relay two are connected on the chip at the same time. At the same time, the positive input end of the power supply is connected with the DC detection circuit and the AC detection circuit and then connected to the chip, and the negative input end of the power supply is connected with the chip. The signal output end of the chip is connected with the DC input indicator, the AC input indicator, the buzzer and the DC output indicator.

[0005] As a preferred, the DC detection circuit and the AC detection circuit transmit the detection signal to the chip, and the chip outputs the control signal to the relay one and the relay two to control and form a complete one-way control system.

[0006] As a preferred, the relay one and the relay two are synchronously driven.

[0007] After adopting the above structure, the utility model has the beneficial effects that:

[0008] 1. When the input voltage is not the voltage type used by the electrical appliance, the blocking is not allowed to pass, and the electrical appliance is protected from being burned. 2. The input voltage type is detected, and the buzzer is sounded when the input voltage type is incorrect.

[0009] 2、When the input voltage is the voltage type used by the electrical appliance, overvoltage, undervoltage are not allowed to pass, and the voltage that the electrical appliance cannot use normally cannot pass either;

[0010] 3. Intelligent, through the indicator light to show, directly indicate the AC and DC voltage type; at the same time, through the buzzer to remind the abnormal. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the present application is described in detail by the following specific embodiments and drawings.

[0012] Figure 1 It is a structural schematic diagram of the present application;

[0013] Figure 2 It is a circuit diagram of the present application.

[0014] The reference signs are explained: relay one 1, relay two 2, chip 3, DC detection circuit 4, AC detection circuit 5, DC input indicator light 6, AC input indicator light 7, buzzer 8, DC output indicator light 9. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the present application more clear and obvious, the following specific embodiments shown in the drawings are used to describe the present application. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0016] Here, it also needs to be explained that, in order to avoid the present application from being obscured by unnecessary details, only the structures and / or processing steps closely related to the scheme according to the present application are shown in the drawings, and other details not closely related to the present application are omitted.

[0017] Referring to Figure 1The embodiment adopts the following technical scheme: it comprises a relay 1, a relay 2, a chip 3, a direct current detection circuit 4, an alternating current detection circuit 5, a direct current input indicator lamp 6, an alternating current input indicator lamp 7, a buzzer 8, and a direct current output indicator lamp 9; the relay 1 is connected between the positive input end and the positive output end of the power supply; the relay 2 is connected between the negative input end and the negative output end of the power supply; the relay 1 and the relay 2 are connected to the chip 3; the positive input end of the power supply is connected to the direct current detection circuit 4 and the alternating current detection circuit 5 and then connected to the chip 3; the negative input end of the power supply is connected to the chip 3; and the chip 3 is connected with the direct current input indicator lamp 6, the alternating current input indicator lamp 7, the buzzer 8, and the direct current output indicator lamp 9.

[0018] The direct current detection circuit 4 and the alternating current detection circuit 5 transmit detection signals to the chip 3, and the chip 3 outputs control signals to the relay 1 and the relay 2 to control the complete one-way control system; the relay 1 and the relay 2 are synchronously driven.

[0019] Further, the direct current detection circuit 4 and the alternating current detection circuit 5 adopt a conventional voltage detection circuit.

[0020] The working principle of the embodiment is that the adapter is used to control the input of the power supply; the chip is used to control the relay, the chip can correctly judge the input voltage type and voltage value, and automatically control the relay to be closed to control the voltage input to the electric appliance; in this way, the electric appliance can only reach the electric appliance under the normal use voltage, and the electric appliance will never be burned by abnormal voltage.

[0021] Action: 1, the electric appliance product uses rated voltage DC12V, when the input is AC85-264V, the voltage is input from the input end, the voltage cannot reach the output end because the relay is disconnected. When the AC85-264V passes through the alternating current detection circuit and the chip, the voltage is processed by the alternating current detection circuit before the chip, the chip enters the working state, judges that the input is high-voltage AC voltage, makes a judgment, lights the alternating current input indicator lamp, controls the relay not to be closed, and the buzzer alarms at the same time. It is intuitive and visual, informs the user that the input voltage is incorrect, and at the same time, no voltage reaches the electric appliance.

[0022] 2, the electric appliance product uses rated voltage DC12V, when the input is DC0-9.2V, the voltage is input from the direct current detection circuit input end, the voltage cannot reach the output end because the relay is disconnected. When the DC0-9.2V passes through the chip, the voltage is processed by the direct current detection circuit before the chip, the chip enters the working state, judges that the input is direct current under-voltage, makes a judgment, lights the direct current input indicator lamp, controls the relay not to be closed. It is intuitive and visual, informs the user that the input voltage is incorrect, and at the same time, no voltage reaches the electric appliance.

[0023] 3. The electrical product uses a rated voltage of DC 12V. When the input is DC 15.6-60V, the voltage enters from the input terminal of the DC detection circuit. Because the relay is open, the voltage cannot reach the output terminal. When the DC 15.6-60V enters the chip, it is processed by the DC detection circuit before the chip. The chip then starts working and detects an overvoltage. Upon making this judgment, the DC input indicator light illuminates, the relay is kept open, and a buzzer sounds an alarm. This provides a clear and visual notification to the user that the input voltage is incorrect and that no voltage is reaching the appliance.

[0024] 4. The electrical product uses a rated voltage of DC 12V. When the input is DC 9.2-15.6V, the voltage enters from the input terminal of the DC detection circuit. Because the relay is open, the voltage cannot reach the output terminal. When DC 9.2-15.6V enters the chip, it is processed by the DC detection circuit before the chip. The chip then starts working, determines that the input voltage is correct, and illuminates the DC input indicator light, controls the relay to close, and simultaneously illuminates the output indicator light. This intuitive and visual notification informs the user that the input voltage is correct, allowing the appliance to operate normally.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An AC blocking functional adapter, characterized by: It contains relay one, relay two, chip, direct current detection circuit, alternating current detection circuit, direct current input indicator, alternating current input indicator, buzzer, direct current output indicator; the positive input end and the positive output end of the power supply are connected with the relay one, and the negative input end and the negative output end of the power supply are connected with the relay two; the relay one and the relay two can be separate relays or combined relays, and the relay one and the relay two are connected on the chip; at the same time, the positive input end of the power supply is connected with the direct current detection circuit and the alternating current detection circuit and then connected to the chip, and the negative input end of the power supply is connected with the chip, and the signal output end of the chip is connected with the direct current input indicator, the alternating current input indicator, the buzzer and the direct current output indicator.

2. An AC blocking functional adapter according to claim 1, characterized in that: The direct current detection circuit and the alternating current detection circuit transmit detection signals to the chip, and the chip outputs control signals to the relay one and the relay two to control and form a complete one-way control system.

3. An AC blocking functional adapter as defined in claim 1, wherein: The relay one and the relay two are synchronously driven.

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