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 found in the October 1994 issue of Electronics Now magazine. The 4046 PLL is not...
The TDA2040 is not a common IC these days, but if you find one you can build this high quality...
In an article describing the assembly of a Tesla coil, the September 1991 issue of Radio...