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 low distortion circuit was found in a 1964 Electronic Design. The transistor admits...
This ingenious circuit was found in a 1990s Popular Electronics. The oscillator is a 555 and the...
This short circuit protection circuit accelerates the blown fuse in case of an output overcurrent. The...