This game aims to make you discover which is the combination of activated switches that make the LEDs light up. The circuit is powered by batteries or cells.
What is a dual frequency generator for? There are several possibilities of use for this circuit. The...
The circuit, illustrated in the figure, consists of the direct application of the ULN2003 in which...
This circuit was found in a Popular Electronics from the 90's. The output signal can be applied to a...