This circuit was obtained from Popular Electronics from June 1978. It doubles the input DC voltage. Obtained current is very low, serving only for polarization circuits.
This circuit was obtained in a 1976 magazine. We can use the 555 and another BC548 to generate square...
This 1969 Electronics World power supply has 5 V to power digital circuits and a 170 V output for...
This amplifier uses common transistors in a phase inverter configuration. Transistors must be...