This dual-tuned 60 Hz oscillator was found in the Radio Experimenter Special projects of 1993. The circuit has the timing ranges given by C1 which can be changed.
This relay circuit protects against accidental inversion of input polarity. The circuit was...
This 80's National Semiconductor circuit uses an era integrated circuit and symmetrical 5V power...
This circuit was obtained from Popular Electronics from March 1967. The transistor used is from...