This two-transistor circuit was found in the August 1972 issue of Radio Electronics magazine. The coil is a common IF transformer for transistor radios. The signal generated is rich in harmonics.
This circuit, found in an old publication, uses operational amplifiers from National Semiconductor that are...
This circuit is from a 90s Popular Electronics. It consists of a power source for bass amplifiers...
September 2016 - It can be purchased from Mouser Electronics the new antenna tuning circuit from...