Part Total Qty. Description Substitutions
R1, R2, R3, R4, R8, R7 6 100K 1/4W Resistor
R5 1 470 Ohm 1/2W Resistor
R6 1 10K Linear Pot
C1 1 0.01uF Mylar Capacitor
C2 1 0.1uF Ceramic Disc Capacitor
C3 1 470uF 63V Electrolytic Capacitor
D1 1 1N4004 Rectifier Diode
D2 1 BY229-400 Fast Recovery Diode See Notes
Q1 1 BC337 NPN Power Transistor
U1 1 LM358 Dual Op Amp IC
L1 1 See Notes
MISC 1 Board, Wire, Socket For U1, Case, Knob For R6, Heatsink for Q1