This circuit is from a time when this type of feature was not common in line cars. The pulse transformer has a 1: 1 turn ratio and the SCR admits equivalents.
This circuit inverts the polarity of a 12 V input, providing an output of 15 V x 100 mA. The...
This circuit was found in the November 1994 issue of Electronics Now magazine. The circuit is...
Up to some minutes intervals can be obtained from this circuit. The circuit can use a lamp (or...