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.
The purpose of this 1967 Philips circuit is to produce a rectangular signal from a sharp pulse....
This circuit allows you to read capacitances on a common analog instrument. It is part of an...
The idea of this circuit is to use an AM radio with headphones to receive sound signals...