This circuit is suggested by American documentation from 1970. It makes use of transistors of the time but can be implemented with modern equivalent transistors.
This circuit is from an English magazine from 1978. The circuit can be assembled with BC557, BC547...
Published in 1988 in Hands-On Electronics, this circuit converts the 12 V of a battery into 120 V...
The circuit presented was found in the ON Semiconductor manual. In it we have a way to protect the...