Quantity   Component name
1 × 1:8 transformer for AC loads
8 × Shottky diodes of sufficient amperage (MBRF2045 play nice)
1 × XL4005 or XL4015 buck converter
1 × XL6009 buck converter
4 × Zener diodes (needs minimum current capacity, really)
1 × Lm 324 operational amplifier chip (4 on it)
1 × arduino nano (subs for the LM324s during testing)
4 × Beefy n-channel ttl MOSFET, to taste (IRLZ44 works well)
4 × Car type relay to sub in for MOSFET during testing