This circuit is from a 1991 publication. The integrated circuit used is an integrated radio from that era.
This astable multivibrator using two transistor controls two small 50 mA lamps. The lamps can be...
This circuit has a type of bias called "virtual earth" providing good gain, given by R2. The...
This circuit can work with almost any JFET. The circuit is from an Electronics Now from April...