This circuit was found in an Electronics World of 1968. The transistor can be any general purpose and the double T must be set to R3 for the desired effect.
This CMNOS crystal-based circuit generates a 2 Hz signal. It was found in the October 1994 issue of...
This V/F converter was published in the June 1991 issue of Radio Electronics magazine. The...
We found this circuit in a 1990 documentation. Its purpose is to maintain the charge of a battery, the...