This battery-powered micropower supply was shown in Radio Electronics magazine in 1991. The maximum current is 170 mA. and the integrated circuit is the MAX655 from Maxim.
This inverter amplifier is suggested by a technical documentation from Texas Instruments. The RF...
This stage circuitry for amplifying microphone signals makes use of germanium transistors as indicated...
This circuit was found in a 1967 General Electric manual. It shows a SCR control with unijunction...