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, which appears elsewhere in this section, was taken from McGRAW documentation from...
This modulator circuit can be used in AM transmitters up to about 10 W of power. The TDA2002 must...
This circuit with low-slip characteristics uses an operating system that is not very common today....