We found this sophisticated meter circuit in an article in Radio Electronics magazine from June 1959. The article taught how to assemble it. Transistors are common types at the time.
This FM receiver tuning step circuit was found in a 1960 documentation. No information about the...
This power supply for TTL and CMOS circuits with a voltage of 5 to 15 V was found in the Special...
This is a direction of rotation control for a small motor up to about 2 A with the indicated...