Quantity   Component name
1 × High-power, N-channel MOSFET (at least 500V and 250W) + heatsink The IRFP460 is an excellent option, but I went with the 500W APT37F50B (APT30F50B also served me well). Silicon carbide MOSFETs (SiC) are also excellent options for input voltages past 120V, but they are quite expensive.
1 × NE555 timer IC DIP-8 package for the PCB
1 × UCC27524 gate driver IC DIP-8 package for the PCB. May be substituted with similar ICs, such as the UCC27424.
1 × 74HC14 Schmitt trigger/hex inverter IC DIP-14 package for PCB
1 × 7812 12V linear voltage regulator
1 × 7805 12V linear voltage regulator
1 × 1.5KE400CA 400V TVS diode Bidirectional
1 × 1.5KE18CA 18V TVS diode Bidirectional
2 × Standard diodes 1N5818, 1N4007, and 1N4148 should all work
2 × Bridge rectifiers (I used GBU1510) At least 500V and 15A recommended
2 × 4.7 ohm resistors (2W recommended)
2 × 1M potentiometers
2 × 100K resistors 1/4W is fine. The second resistor is used on the PCB to connect the PCB ground plane to mains ground (if the connection is made directly, mains power will destructively short circuit through the PCB to ground unless the power supply is isolated).
1 × 1K resistor (1/4W is fine)
1 × 620 ohm resistor (1/4W is fine)
1 × 200 ohm resistor (1/4W is fine)
1 × 10K trimmer potentiometer
1 × 1K trimmer potentiometer This is used on the PCB for fine tuning the frequency, and it can be omitted if desired (just short the connections on the PCB if you do omit it).
1 × 3.5mm phone connector audio jack I used this type: https://www.mouser.com/ProductDetail/CUI-Devices/SJ1-3523N?qs=WyjlAZoYn50aNl0vAhb3Tg%3D%3D
2 × 470uF/50V electrolytic capacitors 25V capacitors are also perfectly usable, but 50V allows for higher input voltages (the 7812 can handle up to 35VDC, or rectified 24VAC)
2 × 2.2uF/250V film capacitors These are to block mains power from entering the audio jack. Recommended lead spacing for the PCB is 5mm to 15mm.
1 × Large 250V electrolytic capacitor (470uF or more is best)
1 × 10uF ceramic capacitor (any voltage over 16V is fine)
1 × 0.022uF ceramic capacitor (any voltage over 16V is fine)
1 × 470pF ceramic capacitor (any voltage over 16V is fine)
1 × Resonant-size film capacitor (1.5nF for my coil) The voltage should be equal to or greater than that of the MOSFET, and the capacitance depends entirely on the tuning
2 × DIP-8 sockets (for 555 timer and UCC27524) Somewhat optional, but recommended
1 × DIP-14 sockets (for 74HC14) Somewhat optional, but recommended
1 × 5-position terminal block (for PCB) I used this type: https://www.mouser.com/ProductDetail/TE-Connectivity/4DB-P107-05?qs=K1bJgWbHFfSwyt4s1qlN6Q%3D%3D
1 × 2-position terminal block (for PCB) I used this type: https://www.mouser.com/ProductDetail/CUI-Devices/TB007-508-02BE?qs=vLWxofP3U2y6PFKAfCqKUQ%3D%3D
1 × Power source (Variac, DC power supply, transformer, etc.) Around 60V is recommended, but feel free to experiment!
1 × Spool of magnet wire Any gauge between about 24AWG and 36AWG should be adequate
1 × Length of coated wire For primary coil and interconnections
1 × PVC or cardboard pipe For secondary coil
1 × 12VAC transformer For powering the logic section of the circuit