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 circuit was found in the November 1992 issue of Radio Electronics magazine. It uses...
This multivibrator has its frequency controlled by a crystal. Other frequencies can be generated by...
We found this preamplifier circuit with high input resistance, on the order of 30 M ohms, in an...