This circuit was found in an American documentation from 1970. We can increase the number of multiplier steps to have higher output voltage. The operating frequency is around 1.35 kHz.
This circuit uses only two common transistors and provides good audio power in a speaker. Readers who...
Indicated for telegraphy practice, this circuit was found in the Radio Electronics magazine of...
This circuit appears in other articles and suggestions for circuits in this section from other...