This circuit is from a 1965 Radio Electronics. The triggering transformer generates high voltage pulses. The generated light pulse depends on C1 and C2.
The integrated circuit LM723 or uA723 is one of the most popular in the design of power supplies given...
This circuit is from a Radio Electronics from May 1994. In it we have the way to connect three 4017...
This circuit is from an Electronics Now from August 1995. The triac is according to the load that...