The 555 timer IC has been around now for quite some time and the list ... Touching the on plate applies the AC voltage present on the surface of your skin, to the circuit and the LED glows. Power can ...

In this design, a classic 555 timer IC consumes zero current in its quiescent mode and wakes up quickly in a known state. Build your own signal-conditioning modules to provide the amount of voltage, ...

A 555 timer can be employed in several different ways. For instance, a monostable operation, where the output signal switches between the default off position and a temporary on position at ...

To turn that into a pair of AC square waves, the power supply is ... and created his two alternating 500 Hz square waves with a 555 timer and a 74HC74D dual flip-flop. Unfortunately, he didn ...

Smoothing down the copper traces with a guitar pick. Take this Christmas tree for example, which uses a 555 timer and a CB4017 decade counter in order to drive some blinking LEDs. The ICs are ...