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 simple test circuit was found in the April 1983 issue of Radio Electronics magazine. The...
This circuit for 6 lamps was found in old American documentation. The supply is of high voltage...
This sensitive three-transistor circuit was found in Electronics Now magazine and is...