Circuit Project Electronic

120 volts from the AC line is fused and then passes through a half wave voltage doubler consisting of 2 redtifier diodes and a capacitor generating a voltage of around 330-340VDC. This is then used to charge a capacitor. Across the capacitor is a 1 megaohm resistor to bleed the charge off when power is [...]

This circuit used to come as a kit from a surplus supplier, but probably isn’t available anymore. It shows a few novel concepts such as using a 555 as a pulse width modulator (PWM), and series/parallel camera flash transformers.
The 555 is set up as a pulse width modulator (the off (low) time being set by [...]

This is a very simple strobe circuit which I have not seen anywhere else. My inspiration came from a strobe circuit that was in a school fire alarm buzzer - the kind that has a built-in strobe light on top.
Description:
It’s a pretty simple circuit which some of you may be able to figure out, but [...]