This circuit for antiparallel control of thyristors was found in a Philips publication from 1967. The circuit uses components of the time, and the power components must be mounted on heat sinks.
This circuit consists of a voltage regulator for 6 V batteries with a very low voltage drop. The...
This BFO or OFB for listening to SSB (Single Sideband) signals was found in the January 1996 issue...
We found this circuit in a European publication from the 1990s. Transistors are still common types...