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.
The audio amplifier presented can use speakers from 8 to 16 ohms, with a power supply from 4.5 to 15...
Found in a Popular Electronics from the 9s, this circuit has output for RS-232 interfaces and current...
September 2016 - can already be found at Mouser Electronics new integrated circuit from Texas...