This oscillator was found in the January 1987 issue of Radio Electronics magazine. The frequency is adjusted by C1, and the output has good symmetry. The power supply is typically 3 to 12 V.
This 3 and-a-half digit circuit was found in a Teledyne documentation from the 90s. The circuit uses...
We found this circuit in an English publication in 1976. The circuit is based on the use of a...
This filter of two transistors has the cutoff frequency determined by the formulas next to the...