This unijunction transistor circuit is a frequency divider synchronized to 100 kHz. The circuit was found in a Radio Electronics from July 1968. The adjustment of R4 is important.
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...