Finally, there is usually (but not always) a ‘zero-crossing detection circuit’. This causes the relay to wait until ... control the ‘on’ time of the input signal, the zero-crossing ...

[Glitch] got his hands on a slew of relays which are meant for use in industrial ... and some protection in case something goes wrong with the circuit. Looking at the board above should give ...

25, the first packet-switched WAN standard, because frame relay was designed for reliable circuits and performs ... it relays them from the switch's input port to the output port, hence the ...