Elaborating on a Flip ON Flop OFF circuit with a circuit that allows for a multi-state 10-position switch or a DAC.

This circuit uses electromechanical relays to retain its state indefinitely, even when power is off. ... Here's a flip-flop circuit that remembers its state indefinitely when power is off.

8 thoughts on “ Circuit VR: Redundant Flip Flops And Voting Logic ” ... I only saw *one* bad relay. You had to trust the relays, ... a flip-flop doesn’t necessarily fail in an 1/0 state, ...

This light activated relay circuit presented here uses the 555 timer IC and a light dependent resistor or LDR to form a light sensitive relay in an. ... the voltage across it rises above 2/3 of Vcc, ...

Relay-Based ON/OFF Flip-Flop Remembers State During Power Failure (.PDF Download) April 13, 2018 Many varieties of ON/OFF control circuits use some form of flip-flop that responds to a pushbutton ...