Found in Popular Electronics from the 90s, this 1.5 A power supply can supply voltages selected by a switch. The splitter resistors determine the output steps.
We found this circuit in an old neon lamp application manual. The circuit stores a call. The...
This isolation circuit for audio signals was found in the August 1992 issue of Radio Electronics...
This fuzz uses only one transistor that can be the BC548. Signal input and output cables must be...