An interesting circuit transformer core DC12 volts to DC24 volts dc upgrades have been made obsolete n555 number 3 connected to the output end 2sj302 MOSFETs with opto-up Kubla circuit charging source is being used to supply power can... Electronics Projects, 555 Stepdown DC DC Converter 24V to 12V "555 timer circuits, dc dc converter circuit, power electronic projects, " Date 2019/08/02