TH367C3 - Protection circuit for self-power connection when power returns after a power failure - Google Patents

Abstract

Protection circuit for self-power reconnection after power return after power failure is an AC transmission circuit that cuts the power input circuit. In order not to pass the electric power to the back circuit when the power returns because the initial return voltage after a power failure will be unstable. There is a ripple potential as a result The electrical appliance that receives this power can be damaged. Connecting the power circuit after a power outage will be done by the user pressing the push button to connect the power circuit, observing the voltage indicator light back after the power failure And at the discretion of the appropriate time to recover Voltage stabilization And when the power input circuit is connected There will be a light to show the normal power condition for the user to know.

Claims (1)

1. Protection circuit for self-power connection when power returns after a power failure, will cut the power input circuit when the voltage is off. To prevent the reconnection of the power input circuit when the voltage is returned By itself the circuit itself There is a push button per circuit to receive power by the user. With a light indicating the inverting condition of the reverse voltage Come after the power goes out to let users know. Including normal power transmission condition indicator, consisting of 1.1 power supply circuit disconnection switch 1.2 push button for power receiving circuit 1.3 power transmission condition indicator 1.4 power indicator light back after power failure