Found in the September 1982 issue of Radio Electronics magazine, this circuit triggers a relay intermittently. Triggering is done by a reed switch, but other types of sensors can be used.
This circuit was found in an English magazine from 1978, but it is current and the common 2N3055 can...
These two point-light circuits for cars with platinum were found in an old national documentation. The...
This circuit was found in a 1977s English magazine. The transformer is 15 V x 500 mA but...