This amplifier with fixed AC bias was found in a 1947 documentation. The circuit uses two transformers in the power supply and two full-wave rectifier tubes.
This circuit uses a Darlington transistor and was found in a 1986 documentation. The circuit...
This circuit was found in Maxim's documentation from the 90's. The circuit provides 12 V x 120 mA....
This circuit was published in Radio Electronics magazine in August 1958 which taught how to...