This 1V heater tube circuit was found on a Radio Craft from 1945. The circuit is for medium wave and can be used as a tuner.
March 2017 - The new ERB-RD, ERB-RE and ERB-RG fuses from Panasonic's Micro Chip Fuses can now be...
Using a 106 series SCR, this circuit was found in the May 1971 Radio Electronics magazine. The...
This circuit is from an 80's documentation, making use of PUTs that are not currently common...