This circuit, which can serve as a reference for restorations, was found in the October 1989 issue of Radio Electronics magazine. The circuit uses a 5-digit display and a dedicated integrated circuit.
We found this circuit in Radio Electronics magazine from April 1960. It works for both NPN and PNP...
This heating element control with up to 3 kW was obtained from an old American documentation. SCRs...
This amplifier for audio signals with a 741 and single source was found in an Electroics Handbook from...