Adjustable Strobe Light

06.06.2010 12:19

Part Total Qty. Description Substitutions R11250 Ohm 10 Watt Resistor R21500K Pot R31680K 1/4 Watt Resistor D1, D221N4004 Silicon Diode C1, C2222 uF 350V Capacitor C310.47uF 400 Volt Mylar Capacitor T114KV Trigger Transformer (see "Notes") L11Flash Tube (see "Notes") L21Neon Bulb Q11106 SCR F11115V 1A Fuse MISC1Case, Wire, Line Cord, Knob For R2

1. T1 and L1 are available from The Electronics Goldmine (see Where To Get Parts).

2. 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.

3. Most any diodes rated at greater then 250 volts at 1 amp can be used instead of the 1N4004's.

4. Do not operate this circuit at high flash rates for more than about 30 seconds or else C1 and C2 will overheat and explode.

5. There is no on/off switch in the schematic, but you can of course add one.

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