Strobe Light

Disco anyone? Actually, this strobe serves a much more useful purpose then making it look cool when you dance in the dark. You can use it to view fast moving objects, look for craks in PC boards (hold the strobe on the trace side of the board and look from the component side), and it is a great attention getter in a store window.

    

Schematic

Parts

Part Total Qty. Description Substitutions R1 1 10 Meg, 1/4 Watt Resistor D1, D2 2 1N4003 Silicon Diode 1N4007 C1, C2 2 10uF 350V Capacitor C3 1 0.1uF 400 Volt Mylar Capacitor T1 1 4KV Trigger Transformer (see "Notes") FT 1 Flash Tube (see "Notes") L1 1 Neon Bulb Q1 1 106 SCR S1 1 115V 1A SPST Switch MISC 1 Case, Wire, Line Cord

Notes

Where To Get Parts).
1. This ciruits is NOT isolated from ground. Use caution when operating without a case. A case is required for normal operation. Do not touch any part of the circuit with the case open or not installed.
2. Most any diodes rated at greater then 250 volts at 1 amp can be used instead of the 1N4003's.