Parts List: 324pwm

R1,R6,R11 = 10K                         C1 = 1000uF, 64V
R2,R9 = 1K8                                 C2 = 10nF, polyester 
R3 = 100 ohm                               C3 = 100uF, 64V
R4,R8 = 1K                                    C4 = 22nF
R5 = 22K                                        C5 = 47uF, 35V
R7 = 1M
*R10 = 0.003 ohm                        D1,D2 = 1N4004
R12 = 3K9                                      U1 = LM7810, volt regulator
R13 = 100K                                    U2 = LM324, Op-amp
R14 = 10 ohm/1 Watt                    Q1 = IRFP064N, IRFZ44, etc.  MOSFet
P1 = 20K (Frequency adjust)
P2 = 10K (Duty Cycle)
P3 = 1K (Current Limiting)

*R10 is a 6 inch piece of speaker wire with one end soldered together.