555 Timer revisited
An article on the well known 555 timer and a few rather unknown applications.
555
Pulse generator (Variable duration, frequency and amplitude)
A very customizable pulse generator built using three 555 timers, to control a relaxation oscillator hydrogen thyratron.
How to build a Tesla Coil #1
Here’s how I’ve built my first Tesla Coil for a few tens of thousands of volts.