Found on a 1969 EDN this circuit switches a current from a digital control signal. The impedance of the circuit ON is approximately 10 ohms. Modern equivalent transistors may be used.
This CMOS generator with the 4018 IC was found in a November 1976 Radio Electronics magazine. It...
This TTL circuit found in the September 1996 issue of Electronics Now magazine doubles the...
We found this oscillator in a publication from the 1960s. The frequency is around 600 Hz with the...