This receiver was found in a Popular Electronics from the 90's. Its different configuration shows a tuning circuit after the tube that works as an aperiodic amplifier. Observe supply voltages.
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...