This circuit provides a signal that is twice the frequency of the input signal. The circuit was found in the April 1990 issue of Radio Electronics magazine.
This circuit can be used to excite push-pull steps of audio amplifiers. From an audio signal at...
This integrator circuit uses the junction FETs which can also be the BF245 or MPF102. The...
This circuit is from a Radio Electronics from September 1969. The integrated circuit used is one...