This circuit was found in a 1945 publication. The circuit was stated to be part of a walk talkie. Note that, as it is a portable assembly, it was powered by batteries. The jack was for microphone insertion.
This is an amplifier for recorder and return containing preamplifier and power amplifier with...
This flasher of two incandescent lamps was discovered in a 1983 documentation and it has two...
El circuito de la figura es un regulador de corriente con ajuste en el rango de 0 a 3 ampères. El...