This circuit with two HT2030s powers 6 LEDs in a decorative flashing system. The circuit is from Electronics Now magazine, December 1997. The LEDs are fed in sequence.
This circuit that uses only transistors indicates when the voltage in the circuit has the voltage...
This circuit detects the 60 Hz signal from the power grid captured by an object, activating a...
Although it is a common configuration today, this circuit was taken from an old publication. The...