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Parts List, Fig. 2
All resistors are 1/2-watt, 5%, unless otherwise noted
R1 = 10K, brown-black-orange
R2 = 4.7K, yellow-purple-red
R3 = 1K, brown-black-red
R4 = 100 ohms, brown-black-brown
R5 = 15 ohms, 5 watts, wire-wound
R6 = 270 ohms, red-purple-brown
Capacitors
C1,C3 = 0.22uF, 100 volts, Mylar
C2 = 0.47uF, 100 volts, Mylar
C4 = 470uF, 25 volts, electrolytic
Semiconductors
IC1 = 555 timer (not the CMOS type)
Q1 = 2N3638, or NTE129, PNP transistor
Q2 = 2N3055, or NTE130, NPN power transistor
Q3 = 2N3055, or NTE130, NPN power transistor with heatsink
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