This 4-voltage power supply using zener diodes has a maximum recommended current of 25 mA. The circuit was found in the May 1966 Radio Electronics magazine.
This 13.6 V power supply with 8 A output was suggested by Texas Instruments in the documentation of...
This sophisticated filter for audio signals was found in Radio Electronics magazine. The...
This circuit was found in a 1977s English magazine. The SCR can be the TIC106 and the transistor the...