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.
We found this phonographic transmitter for the MW band in a 1956 documentation. The circuit has a...
The voltage of 30 V indicated in this project, shown in the figure depends on the diac used. It...
We find this circuit in an American 1980s documentation. The circuit drives a system that keeps a...