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.
We found this circuit without bounce in an Elektor from the 90s. The circuit can be used as a...
The circuit shown in the figure consists of a 200mA low voltage drop (LDO) regulator using the...
Hughes suggests this circuit in a 1968 documentation. The circuit uses old transistors that can be...