PWM parts and diagram

Here’s the Parts list: thanks to Nine_Dots
For the capacitor use any of these
1 – 1000uf 50v (Radio Shack – $2.59)
or
1 – 708uf to 850uf 125VAC to 165VAC
(take it off an old motor control if you have access)
or
(You can rape this from an old ATX power supply)
680uf 200v
1- For the PWM, use one of the 30a [...]