User manual

tams elektronik
SD-34 | SD-34.2 English
Opto couplers
Opto couplers are ICs, which work similar to laser beam switches. They
combine in one housing a light emitting diode and a photo transistor. Their
task is the transmission of information without galvanic connection. They
are in a DIL-housing with at least 4 pins.
Relays
Relays are electronic switches, depending on their position the one or
other (internal) connection is closed. The mode of operation of
monostable relays can be compared to that of a push-button switch,
i.e. the connection is only closed as long as the voltage is applicated.
Bistable relays keep their status after switching – comparable to a
switch.
Relays which combine two switches in one housing are common as well
(shortly 2xUM). The switching between the two connections can be
heard clearly because of the resulting clicking sound.
Terminal strips
Terminal strips are solder-in screw-type terminals. They provide a
solder-free and safe connection of the cables to the circuit, which can
still be separated any time.
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