This circuit is from a 1976 amateur radio manual. The transistor can be the BD136 and the frequency adjustment is done in a potentiometer. The supply can be done with voltages from 6 to 15 V.
In the figure we have the way to implement a sinusoidal oscillator with the 4093 IC. The component...
This oscillator can use any CMOS inverter. The circuit is crystal controlled and was found in the...
This TTL sequential flasher circuit was found in the January 1981 issue of Radio Electronics...