This CMOS 4001 oscillator alternately turns the relay on and off at times set by R2. The circuit is from Electronics Now magazine, June 1995.
This circuit was found in a 1966 EEE. What it does is it converts the logic levels of 0 V and +4 V...
This circuit has been found in operational documentation of the 1970s. The circuit has a fail-safe...
This simple circuit does not use active components and uses a small speaker as a microphone. The...