This circuit is better than the previous one in that the control is isolated by a transformer. The transformer has 110 or 220 V primary and 6.3 to 12 V secondary with 200 to 500 mA current.
This traditional triplier configuration with the 555 can be found in other articles on the...
This transistorized oscillator, a modification of the Colpitts oscillator, was found in the...
This circuit is from 1995 documentation. The power depends on the transformer, which in this case...