Alternating current blocker

Abstract

The utility model discloses an alternating current interrupter which comprises an alternating current interrupter body, the alternating current interrupter body comprises an internal power supply circuit, a relay switch power supply circuit, an output direct current detection unit, an input alternating current detection circuit and an input voltage detection display control circuit, and the internal power supply circuit is connected with the relay switch power supply circuit. The output direct current detection unit and the input alternating current detection circuit are both connected with the input voltage detection display control circuit, and through the arrangement of the output direct current detection circuit and the input alternating current detection circuit, when input direct current is provided with a direct current power supply window, a power supply can be normally switched on to supply power to equipment, and the equipment is prevented from being burnt; meanwhile, input polarity reverse connection protection is supported; by arranging the internal power supply circuit and the relay switch power supply circuit, voltage power supply which is not in the use range is blocked, the used equipment is burnt out when the equipment is used, power supply of different types of power sources can be blocked, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of blockers, in particular to an AC blocker. Background Art

[0002] A blocker, also known as a shield or isolator, is a device used to block or isolate specific signals in a circuit. It plays a very important role in the field of electronics and can effectively control signal transmission and interference in the circuit.

[0003] Blockers are usually composed of capacitors, inductors and resistors, which can isolate and block signals in the circuit. In the circuit, when it is necessary to block signals of a specific frequency, the blocker will filter and isolate these signals through capacitors and inductors to achieve the blocking effect. In other frequency ranges, the blocker will transmit the signal to the next circuit to achieve normal signal transmission. This working principle enables the blocker to isolate and block signals in the circuit, effectively controlling the transmission and interference of signals.

[0004] In practical applications, blockers have a wide range of uses. First, they are often used in wireless communication systems to isolate and block signals of different frequencies, thereby ensuring the normal operation of the communication system. Secondly, blockers are also widely used in electronic devices, such as mobile phones, televisions, etc., which can effectively control signal transmission and interference in the equipment and improve the performance and stability of the equipment. In addition, blockers are also used in radar systems, radio systems and other fields, playing an important role.

[0005] However, traditional blockers have the following disadvantages:

[0006] Traditional blockers only block DC power. Currently, most power sources are AC power. Blockers cannot block AC power, which reduces the flexibility of their use. Summary of the invention

[0007] The purpose of the utility model is to provide an AC blocker to solve the problem that the traditional blocker proposed in the above background technology only blocks the DC power supply. At present, most power supplies are AC power supplies, and the blocker cannot block the AC power supply, which reduces the flexibility of its use.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an AC blocker, comprising an AC blocker, the AC blocker comprising an internal power supply circuit, a relay switch power supply circuit, an output DC detection unit, an input AC detection circuit and an input voltage detection display control circuit, the internal power supply circuit is connected to the relay switch power supply circuit, the output DC detection unit and the input AC detection circuit are both connected to the input voltage detection display control circuit, the internal power supply circuit comprises D1, KJ1B, EC1, DS, U7, R10, R8, R8A, EC3, R6, U6, R7, R5, R3, M2, R4, D4, C10, EC7, D9 , L2, D8, C6, R19, KJ2B and U5, the relay switch power supply circuit includes R1, C1, L1, U1, R9, R15, C4, C3, M3, R18, C5, R13, R14, R2, EC2, C2, KJ2A, KJ1A, D3, LED1 and R33, the output DC detection unit includes R20, R26, R32, C9 and D7, the input AC detection circuit includes R34, R37, R39, C11, D13 and Q2, and the input voltage detection display control circuit includes C7, R43, R45, BZ, U4, R23, R44, R41, LED3 and LED2.

[0009] As a preferred technical solution of the utility model, one end of D1 is respectively connected to the 1 end pin of U5 and one end of EC1, the 2 end pins of U5 are respectively connected to one end of C6 and one end of D9, the 3 end pins of U5 are connected to one end of R19, the other end of R19 is respectively connected to the other end of C6, one end of D8 and one end of L2, the other end of D9 is respectively connected to one end of C10 and one end of D4, the other end of L2 is connected to one end of EC7, the other end of D4 is respectively connected to one end of R7, one end of R5 and one end of EC3, the other end of R7 is connected to one end of R6, the connection between R7 and EC3 is connected to one end of R5, and the other end of R5 is respectively connected to one end of R3. and one end of R4, the other end of R3 is connected to the G end pin of M2, the D end pin of M2 is connected to the element directly opposite to D1, the other end of R4 is connected to the S end pin of M2, the connection between R6 and R7 is connected to one end of U6, the G end pin of M2 is connected to one end of U7, the connection between M2 and D1 is connected to one end of R8A, the other end of R8A is connected to one end of R8, the other end of R8 is connected to one end of R10, the other end of D8 is grounded, the other end of EC7, the other end of C10, the other end of R6, the other end of U6, the other end of U7, the other end of R10, one end of H and D5 are all connected to the other end of EC1, and the other end of D5 is connected to one end of KJ2B.

[0010] As a preferred technical solution of the utility model, the 5-pin terminal of U1 is connected to one end of R1, one end of R1 is connected to one end of R9, the other end of R9 is connected to one end of R15, the 6-pin terminal of U1 is connected to one end of C1, the other end of C1 and the 2-pin terminal of U1 are both connected to one end of L1, the other end of L1 is respectively connected to one end of R2, one end of EC2, one end of C2, the 2-pin terminal of KJ2A, one end of KJ1A, one end of D3 and one end of LED1, the other end of LED1 is connected to one end of R33, the other end of R2 is connected to one end of R14 , the 4-end pin of U1 is connected to one end of R13, the 3-end pin of U1 is respectively connected to the end directly opposite to R9, one end of C4 and one end of C3, the other end of R15, the other end of C4, the other end of C3, the other end of R13D, the other end of R14, the other end of EC2, the other end of C2, the 1-end pin of KJ2A, the 1-end pin of U1, the other end of KJ1A, the other end of D3 and the other end of R33 are all connected to the D-end pin of M3, the G-end pin of M3 is respectively connected to one end of R18 and one end of C5, and the S-end pin of M3, the other end of C5 and the other end of R18 are all grounded.

[0011] As a preferred technical solution of the utility model, one end pin of U5 is respectively connected to an end directly opposite to R1 and an end directly opposite to R9.

[0012] As a preferred technical solution of the utility model, one end of the R20 is connected to one end of R26, the other end of the R26 is respectively connected to one end of R32 and one end of D7, the other end of D7 is connected to one end of C9, the other end of R32 and the other end of C9 are both grounded, and one end of D7 is connected to VDD.

[0013] As a preferred technical solution of the present utility model, one end of R34 is connected to one end of R37, the other end of R37 is respectively connected to one end of D13, one end of Q2 and one end of R39, the other end of R39, the other end of C11 and the other end of Q2 are all grounded, and the other end of D13 is connected to VDD.

[0014] As a preferred technical solution of the utility model, pin 1 of the U4 is connected to one end of C7, pin 2 of the U4 is connected to one end of R43, pin 4 of the U4 is connected to one end of R45, the other end of R45 is connected to one end of BZ, pin 5 of the U4 is connected to one end of R41, the other end of R41 is connected to one end of LED3, pin 6 of the U4 is connected to one end of R44, the other end of R44 is connected to one end of LED2, pin 7 of the U4 is connected to one end of R23, pin 8 of the U4, the other end of C7, the other end of LED3 and the other end of LED2 are all grounded, and the other end of R43 and the surface of C7 are connected to VDD.

[0015] As a preferred technical solution of the utility model, the surface of Q2 and the connection between D7 and C9 are connected to the 3-terminal pins of U4.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. By setting the output DC detection circuit and the input AC detection circuit, when the input DC is in the set DC power supply window, the power supply can be normally connected to the device to prevent the device from being burned, and it also supports input polarity reverse connection protection;

[0018] 2. By setting up the internal power supply circuit and the relay switch power supply circuit, the voltage supply that is not within the use range is blocked, which may cause the equipment to burn when it is used. It can block different types of power supply and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A circuit diagram of the utility model;

[0020] Figure 2 It is a circuit diagram of the internal power supply circuit of the utility model;

[0021] Figure 3 A circuit diagram of a relay switch power supply circuit of the utility model;

[0022] Figure 4 The circuit diagram of the output DC detection circuit of the utility model;

[0023] Figure 5 This is a circuit diagram of the input AC detection circuit of the utility model;

[0024] Figure 6 This is a circuit diagram of the input voltage detection and display control circuit of the utility model. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-6 The present invention provides an AC blocker, including an AC blocker, the AC blocker including an internal power supply circuit, a relay switch power supply circuit, an output DC detection unit, an input AC detection circuit and an input voltage detection display control circuit, the internal power supply circuit is connected to the relay switch power supply circuit, the output DC detection unit and the input AC detection circuit are both connected to the input voltage detection display control circuit, the internal power supply circuit includes D1, KJ1B, EC1, DS, U7, R10, R8, R8A, EC3, R6, U6, R7, R5, R3, M2, R4, D4, C10, EC7, D9, L2, D8, C 6, R19, KJ2B and U5, the relay switch power supply circuit includes R1, C1, L1, U1, R9, R15, C4, C3, M3, R18, C5, R13, R14, R2, EC2, C2, KJ2A, KJ1A, D3, LED1 and R33, the output DC detection unit includes R20, R26, R32, C9 and D7, the input AC detection circuit includes R34, R37, R39, C11, D13 and Q2, and the input voltage detection display control circuit includes C7, R43, R45, BZ, U4, R23, R44, R41, LED3 and LED2.

[0027] One end of D1 is connected to pin 1 of U5 and one end of EC1 respectively, pin 2 of U5 is connected to one end of C6 and one end of D9 respectively, pin 3 of U5 is connected to one end of R19, the other end of R19 is connected to the other end of C6, one end of D8 and one end of L2 respectively, the other end of D9 is connected to one end of C10 and one end of D4 respectively, the other end of L2 is connected to one end of EC7, the other end of D4 is connected to one end of R7, one end of R5 and one end of EC3 respectively, the other end of R7 is connected to one end of R6, the connection between R7 and EC3 is connected to one end of R5, and the other end of R5 is connected to one end of R3 and one end of R4 respectively. , the other end of R3 is connected to the G end pin of M2, the D end pin of M2 is connected to the element directly opposite to D1, the other end of R4 is connected to the S end pin of M2, the connection between R6 and R7 is connected to one end of U6, the G end pin of M2 is connected to one end of U7, the connection between M2 and D1 is connected to one end of R8A, the other end of R8A is connected to one end of R8, the other end of R8 is connected to one end of R10, the other end of D8 is grounded, the other end of EC7, the other end of C10, the other end of R6, the other end of U6, the other end of U7, the other end of R10, and one end of D5 are all connected to the other end of EC1, and the other end of D5 is connected to one end of KJ2B.

[0028] Pin 5 of U1 is connected to one end of R1, one end of R1 is connected to one end of R9, the other end of R9 is connected to one end of R15, pin 6 of U1 is connected to one end of C1, the other end of C1 and pin 2 of U1 are both connected to one end of L1, the other end of L1 is respectively connected to one end of R2, one end of EC2, one end of C2, pin 2 of KJ2A, one end of KJ1A, one end of D3 and one end of LED1, the other end of LED1 is connected to one end of R33, the other end of R2 is connected to one end of R14, pin 4 of U1 is connected to the end of R13. One end is connected, the 3 ends of U1 are connected to the end opposite to R9, one end of C4 and one end of C3 respectively, the other end of R15, the other end of C4, the other end of C3, the other end of R13D, the other end of R14, the other end of EC2, the other end of C2, 1 end of KJ2A, 1 end of U1, the other end of KJ1A, the other end of D3 and the other end of R33 are all connected to the D end of M3, the G end of M3 is connected to one end of R18 and one end of C5 respectively, the S end of M3, the other end of C5 and the other end of R18 are all grounded.

[0029] One end of U5 is connected to the end opposite to R1 and the end opposite to R9 respectively.

[0030] One end of R20 is connected to one end of R26, the other end of R26 is respectively connected to one end of R32 and one end of D7, the other end of D7 is connected to one end of C9, the other end of R32 and the other end of C9 are both grounded, and one end of D7 is connected to VDD.

[0031] One end of R34 is connected to one end of R37, the other end of R37 is respectively connected to one end of D13, one end of Q2 and one end of R39, the other end of R39, the other end of C11 and the other end of Q2 are all grounded, and the other end of D13 is connected to VDD.

[0032] Pin 1 of U4 is connected to one end of C7, pin 2 of U4 is connected to one end of R43, pin 4 of U4 is connected to one end of R45, the other end of R45 is connected to one end of BZ, pin 5 of U4 is connected to one end of R41, the other end of R41 is connected to one end of LED3, pin 6 of U4 is connected to one end of R44, the other end of R44 is connected to one end of LED2, pin 7 of U4 is connected to one end of R23, pin 8 of U4, the other end of C7, the other end of LED3 and the other end of LED2 are all grounded, and the other end of R43 and the surface of C7 are connected to VDD.

[0033] The surface of Q2 and the connection between D7 and C9 are connected to the 3-pin terminal of U4.

[0034] In the present invention, the device uses a rated voltage of DC12V and an allowable voltage of DC9.2V-DC15.6V. When the voltage is lower than the set voltage range or the input AC100-240V mains power is misused, the power supply can be blocked. When the input DC is within the set DC power supply window, the power supply can be normally connected to the device to prevent the device from being burned, and the input polarity reverse connection protection is supported.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An AC blocker, comprising an AC blocker, characterized in that: The AC blocker includes an internal power supply circuit, a relay switch power supply circuit, an output DC detection unit, an input AC detection circuit and an input voltage detection display control circuit. The internal power supply circuit is connected to the relay switch power supply circuit. The output DC detection unit and the input AC detection circuit are both connected to the input voltage detection display control circuit. The internal power supply circuit includes D1, KJ1B, EC1, DS, U7, R10, R8, R8A, EC3, R6, U6, R7, R5, R3, M2, R4, D4, C10, EC7, D9, L2, D8, C6, R19, KJ2B and U5, the relay switch power supply circuit includes R1, C1, L1, U1, R9, R15, C4, C3, M3, R18, C5, R13, R14, R2, EC2, C2, KJ2A, KJ1A, D3, LED1 and R33, the output DC detection unit includes R20, R26, R32, C9 and D7, the input AC detection circuit includes R34, R37, R39, C11, D13 and Q2, and the input voltage detection display control circuit includes C7, R43, R45, BZ, U4, R23, R44, R41, LED3 and LED2.

2. The AC blocker according to claim 1, characterized in that: One end of D1 is connected to pin 1 of U5 and one end of EC1 respectively, pin 2 of U5 is connected to one end of C6 and one end of D9 respectively, pin 3 of U5 is connected to one end of R19, the other end of R19 is connected to the other end of C6, one end of D8 and one end of L2 respectively, the other end of D9 is connected to one end of C10 and one end of D4 respectively, the other end of L2 is connected to one end of EC7, the other end of D4 is connected to one end of R7, one end of R5 and one end of EC3 respectively, the other end of R7 is connected to one end of R6, the connection between R7 and EC3 is connected to one end of R5, the other end of R5 is connected to one end of R3 and one end of R4 respectively, The other end of R3 is connected to the G end pin of M2, the D end pin of M2 is connected to the element directly opposite to D1, the other end of R4 is connected to the S end pin of M2, the connection between R6 and R7 is connected to one end of U6, the G end pin of M2 is connected to one end of U7, the connection between M2 and D1 is connected to one end of R8A, the other end of R8A is connected to one end of R8, the other end of R8 is connected to one end of R10, the other end of D8 is grounded, the other end of EC7, the other end of C10, the other end of R6, the other end of U6, the other end of U7, the other end of R10, and one end of D5 are all connected to the other end of EC1, and the other end of D5 is connected to one end of KJ2B.

3. The AC blocker according to claim 1, characterized in that: The 5-pin terminal of U1 is connected to one end of R1, one end of R1 is connected to one end of R9, the other end of R9 is connected to one end of R15, the 6-pin terminal of U1 is connected to one end of C1, the other end of C1 and the 2-pin terminal of U1 are both connected to one end of L1, the other end of L1 is respectively connected to one end of R2, one end of EC2, one end of C2, the 2-pin terminal of KJ2A, one end of KJ1A, one end of D3 and one end of LED1, the other end of LED1 is connected to one end of R33, the other end of R2 is connected to one end of R14, the 4-pin terminal of U1 is connected to one end of R15, the other end of R2 is connected to one end of R16, the 4-pin terminal of U1 is connected to one end of R2, the other end of C2 and the 2-pin terminal of KJ2A, the 2-pin terminal of KJ1A, the 2-pin terminal of D3 and the 2-pin terminal of LED1. The 3 end pins of U1 are respectively connected to the end opposite to R9, one end of C4 and one end of C3. The other end of R15, the other end of C4, the other end of C3, the other end of R13D, the other end of R14, the other end of EC2, the other end of C2, 1 end pin of KJ2A, 1 end pin of U1, the other end of KJ1A, the other end of D3 and the other end of R33 are all connected to the D end pin of M3. The G end pin of M3 is respectively connected to one end of R18 and one end of C5. The S end pin of M3, the other end of C5 and the other end of R18 are all grounded.

4. The AC blocker according to claim 1, characterized in that: One end pin of U5 is respectively connected to an end directly opposite to R1 and an end directly opposite to R9.

5. The AC blocker according to claim 1, characterized in that: One end of R20 is connected to one end of R26, the other end of R26 is respectively connected to one end of R32 and one end of D7, the other end of D7 is connected to one end of C9, the other end of R32 and the other end of C9 are both grounded, and one end of D7 is connected to VDD.

6. The AC blocker according to claim 1, characterized in that: One end of R34 is connected to one end of R37, the other end of R37 is respectively connected to one end of D13, one end of Q2 and one end of R39, the other end of R39, the other end of C11 and the other end of Q2 are all grounded, and the other end of D13 is connected to VDD.

7. The AC blocker according to claim 1, characterized in that: Pin 1 of U4 is connected to one end of C7, pin 2 of U4 is connected to one end of R43, pin 4 of U4 is connected to one end of R45, the other end of R45 is connected to one end of BZ, pin 5 of U4 is connected to one end of R41, the other end of R41 is connected to one end of LED3, pin 6 of U4 is connected to one end of R44, the other end of R44 is connected to one end of LED2, pin 7 of U4 is connected to one end of R23, pin 8 of U4, the other end of C7, the other end of LED3 and the other end of LED2 are all grounded, and the other end of R43 and the surface of C7 are connected to VDD.

8. The AC blocker according to claim 1, characterized in that: The surface of Q2 and the connection between D7 and C9 are connected to the 3-terminal pin of U4.

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