This inverter with the 555 IC provides a high voltage output, but very low current. We found it in an 80's documentation. The transformer is according to the desired voltage.
This circuit was found in a Radio Electronics from 1970. The coupler with LDR is from that time,...
This quick response game was found in a Popular Electronics from the 80s. It uses only discrete analog...
Other operational amplifiers series, such as MC34072, MC34074, MC35071, MC35072, MC35074 d MC33071...