This power supply was found in the September 1989 issue of Radio Electronics magazine. The 2N3055 must be equipped with a heat sink.
This circuit is based on the light comparison of two LDR sensors. We found it in a 90s Popular...
This circuit is suggested by the Texas Instruments manual of linear applications of the 90's. The...
This circuit was found in American documentation from the 90s. It serves as an amplifier for a...