Controller circuit for remote control switch

Abstract

A controller circuit for a remote control switch includes a pulse output unit, a load detection unit, and a count unit for connection counts. The pulse output unit outputs a control signal to an electric operating motor at regular intervals to activate the circuit breaker. The load detection unit triggers a silicon controlled rectifier to conduct when it detects the connection of the load-side power supply. When the count unit counts the number of times the load-side power supply is activated and reaches a reset set value, it resets the pulse output unit and the count unit for connection counts, causing the pulse output unit to stop outputting control signals and preventing the circuit breaker from being activated again.

Claims

1. A controller circuit for a remote control switch, the remote control switch being used in conjunction with an electric operating motor and a circuit breaker, the controller circuit comprising: A pulse output unit is electrically connected to the electric operating motor and outputs a control signal to the electric operating motor at regular intervals to activate the circuit breaker. A load detection unit is electrically connected to the control terminal (G) of a silicon controlled rectifier (SCR) to detect when a load-side power supply is connected, triggering the SCR to conduct. A power-on count unit is coupled to the control terminal (G) of the SCR via a reset unit, and is further coupled to the pulse output unit and the anode (A) of the SCR via a first diode. The cathode (C) of the SCR is electrically connected to a ground terminal. When the number of times the load-side power supply is connected by the load detection unit reaches a reset set value, the power-on count unit outputs a reset signal to the reset unit, triggering the SCR to conduct, thereby resetting the pulse output unit and the power-on count unit. This causes the pulse output unit to stop outputting the control signal, preventing the circuit breaker from being connected again.

2. The controller circuit for the remote control switch as described in claim 1, further comprising: An input failure display unit is electrically connected to the reset unit and an LED. When the reset unit receives the reset signal, it outputs a DC power supply (Vcc) to the LED to emit light.

3. The controller circuit for the remote control switch as described in claim 2, wherein the reset unit is composed of a field-effect transistor (MOSFET) and a second diode, wherein the gate of the MOSFET is connected to the input count unit, the source of the MOSFET is connected to the input failure display circuit, and is connected to the gate of the silicon controlled rectifier via the second diode, and the drain (D) of the MOSFET is connected to the DC power supply through a resistor.

4. The controller circuit for the remote control switch as described in claim 2, wherein the pulse output unit, the load detection unit, and the activation count unit are all electrically connected to the DC power supply.

5. The controller circuit for the remote control switch as described in claim 1, wherein the count unit for the number of inputs is an RC delay circuit.

6. The controller circuit of the remote control switch as described in claim 1, wherein the reset setting value is 4, that is, the power-on count unit outputs the reset signal when the number of times the load-side power supply is turned on reaches 4.

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