초록 ▼

A relay control system is disclosed for alternately energizing and deenergizing a non-latching relay in response to successive applications of an AC impulse control signal to a control signal input. An impulse processing circuit converts the AC impulse control signal into a DC pulse. The DC pulse to

A relay control system is disclosed for alternately energizing and deenergizing a non-latching relay in response to successive applications of an AC impulse control signal to a control signal input. An impulse processing circuit converts the AC impulse control signal into a DC pulse. The DC pulse toggles a first flip-flop. The output from the first flip-flop is gated through a second flip-flop in response to a clock signal produced by an AC zero-crossing detector to synchronize the second flip-flop output with zero-crossings of the AC power signal. The output from the second flip-flop operates driving circuitry which energizes and deenergizes the relay coil, thereby toggling the relay. A power up reset circuit deenergizes the relay in response to the initiation of the AC power signal and presets the logic circuitry so that the next impulse of the AC control signal will energize the relay.

대표청구항 ▼

An impulse relay control circuit for controlling a relay powered by an interruptable power signal, comprising: means connectable to a power line for inputting the power signal to the circuit; reset means for generatring a reset pulse signal in response to an initiation of the power signal on the pow

An impulse relay control circuit for controlling a relay powered by an interruptable power signal, comprising: means connectable to a power line for inputting the power signal to the circuit; reset means for generatring a reset pulse signal in response to an initiation of the power signal on the power line; means for inputting an AC impulse control signal to the circuit; logic means responsive to successive occurrences of the AC impulse control signal for alternately generating first and second logic signals; relay energizing means responsive to the first and second logic signals for energizing and deenergizing the relay; and initializing means responsive to the reset pulse signal for initially applying said second logic signal to the relay energizing means to deenergize the relay; the logic means including preset means responsive to the reset signal for presetting the logic means so that the first logic signal following initiation of the power signal energizes the relay.