This crystal-based circuit can generate accurate 50 or 60 Hz signals. The circuit is from a November 1998 Electronics Now magazine. The output signal consists of rectangular pulses.
This circuit was obtained from a 1966 General Electric documentation. It can serve as a basis for...
This circuit was found in Siliconix documentation from the 1980s. Equivalent operational...
Obtained from a 1980s Linear Technology documentation, this circuit has a hysteresis of less than...