The astable multivibrator using NE555 integrated timing voltage of 5 volts DC to 200 volts to 200 volts dc voltage can upgrade to the power 20 of which can be taken out “In addition to @timpat” Adapted from my... Electronics Projects, 5V to 200V with NE555 DC DC Converter "555 timer circuits, dc dc converter circuit, power electronic projects, " Date 2019/08/02