This low frequency circuit was found in documentation from the 1980s. The values of R and C determine the frequency. Inverters can also be designed with logic gates.
This 1956 direct amplification radio circuit was found in a documentation from Sylvania that...
This conventional oscillator with the 741 can be precisely adjusted to produce a 400 Hz signal. The...
This circuit uses two diodes in a doubling configuration to receive medium-wave range signals. The...