This circuit was found in a 1975 documentation. The SCR can be of any type and in this case, we have the horn activation. The relay must be a 12 V type with high contact current.
This circuit, obtained from a publication in the 1950s, uses a PNP germanium transistor and a...
This differentiator for the negative front of the input signal can be elaborated based on any...
This circuit was found in a 1973 publication. The SCR may be the TIC106 and must use a heat sink,...