I bought the SCR unit from
http://www.newark.com
Part Num. Qty. Availability Line Price Description Mfr Part #
========= ==== ============ ========== ======================================== ================
12J3365 2 In Stock 2.82 SCR Thyristor; Current, It av:20A; Repet S6020L
05H7408 1 0 15.93 Enamel Magnet Wire, Gauge: 16, Approxima 16PE 1/4 LB
42K2933 10 In Stock 1.31 Standard Recovery Rectifier; Forward Cur 1N5402G
58K4937 4 In Stock 0.36 Carbon Film Resistor; Series:E-24; Resis MCCFR0S2J0103A20
Total : $20.42
And I bought the photoflash capacitors from
www.goldmine-elec-products.com
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ITEM# DESCRIPTION QTY TOTAL
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G13596 120uF 330VDC Photoflash Capacitor 12.00 $17.88
Ship Via : UPS GROUND (UNITED STATES ONLY)
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G8730 120uF 400V Electrolytic Capacitor 2.00 $5.00
Ship Via : UPS GROUND (UNITED STATES ONLY)
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SUB TOTAL : $22.88
TAX : $0.00
SHIPPING : $7.00
ORDER TOTAL : $29.88
Please don't ask me how to build it. It's complicated and you must have substantial knowledge of electronics. I cannot tutor you.