A common solution we’ve seen applied is to connect a relay in parallel ... relay is like closing the switch. BJTs are a very common type of transistor. Their function is to amplify current.

For any given state of the FLIP-FLOP touching the corresponding set of contacts will make the circuit to reverse its state of balance and in effect toggle the switch. As a switch is used a relay ...

This Design Idea is inspired by Vladimir Oleynik’s “Schmitt trigger provides toggle function ... relays and passive components. A further challenge is to design these circuits such that they could ...

Similar circuits can be constructed ... PNP transistors and n-channel transistors function similarly to “signal turns switch on” relays and tubes; likewise NPN transistors and p-channel ...

Electroswitch control switch relays combine the function of a control switch with a remote-controlled solenoid allowing one device to do both the manual and supervisory control function in the control ...

A ULN2803 Darlington transistor ... relay coil, respectively. The problem begins when we independently switch off the digital-circuitry power supply before the relay-coil supply. In the circuit ...

This way when the radio's mode was switched on, the remote power wire would also switch on, powering the relay's coil, closing the circuit and ... to the Base on an NPN transistor.