This configuration makes use of currently uncommon components. In fact, we found it in documentation from the 70s. Equivalent operational amplifiers can be used.
This alarm oscillator was found in the December 1974 issue of Radio Electronics magazine. The...
We found this small audio amplifier in the November 1999 issue of Electronics Now magazine. The...
This circuit is a continuation of the previous one, serving as a protector against overloads in...