This circuit was obtained from a 1965 Radio Electronics. The semiconductors used admit modern equivalents. The high voltage coil is an automobile ignition coil.
This circuit was obtained in an Electronic Design from the 90s. The circuit uses transistors from the...
This is a circuit of an 80's American documentation and can be implemented with modern components....
This circuit was found in a 1980s US publication. There may be some difficulty in obtaining the...