The trigger element of this circuit is a neon lamp. The SCR admits an equivalent. We found it in an American documentation from the 80s.
We found this version of the automotive tachometer in a 1980s publication. Variations from other...
Alternating taps on the pressure switch or sensor, cause the output to alternate the high and low...
The SCA is a signal superimposed on the FM signals that make it possible to eliminate...