There are lots of ways to make a treadmill motor variable power supply. You can use an SCR or you can use the treadmill motor control board, but if you put one together make sure you do it correctly. There are lots of little mistakes that people sometimes make. I put together this video to help you avoid said mistakes.

Affiliate links to items in this video:

MC60:

10K potentiometer https://amzn.to/3QAtiES

20 Amp circuit breaker https://amzn.to/3ufQDRh
OR
15 Amp circuit breaker https://amzn.to/3FgoQGP

Emergency stop switch https://amzn.to/43mgveT

3PDT direction switch https://amzn.to/3ZShNLG
OR
DPDT center of switch https://amzn.to/46hjbdM



MC2100:

PWM signal generator for the MC 2100 https://amzn.to/3z3ivu3
20 Amp circuit breaker https://amzn.to/3ufQDRh
OR
15 Amp circuit breaker https://amzn.to/3FgoQGP

Emergency stop switch https://amzn.to/43mgveT

3PDT direction switch https://amzn.to/3ZShNLG
OR
DPDT center of switch https://amzn.to/46hjbdM

Toroid Core for AC inductor/choke https://amzn.to/3QTk5Zs


Variable Transformer:

100 amp Bridge rectifier https://amzn.to/40DjWg6

Emergency stop switch https://amzn.to/43mgveT

3PDT direction switch https://amzn.to/3ZShNLG
OR
DPDT center of switch https://amzn.to/46hjbdM

Toroid Core for AC inductor/choke https://amzn.to/3QTk5Zs


SCR Voltage controller:

SCR voltage controller https://amzn.to/47vUify

100 amp Bridge rectifier https://amzn.to/40DjWg6

20 Amp circuit breaker https://amzn.to/3ufQDRh
OR
15 Amp circuit breaker https://amzn.to/3FgoQGP

Emergency stop switch https://amzn.to/43mgveT

3PDT direction switch https://amzn.to/3ZShNLG
OR
DPDT center of switch https://amzn.to/46hjbdM

Toroid Core for AC inductor/choke https://amzn.to/3QTk5Zs

10K potentiometer https://amzn.to/3QAtiES
20K potentiometer https://amzn.to/3Srib1a
100K potentiometer https://amzn.to/46anc3O
150K potentiometer https://amzn.to/3zxc96l


Inclosuers and inclosure parts:
8” X 6” X 4” hinged box https://amzn.to/3jPndaR
8” X 10” X 4” Power supply box https://amzn.to/3HEHeun
12” x 12” x 4” Large component box https://amzn.to/3Imerv6
7.9” x 4.7” x 2.95” Large plastic box https://amzn.to/3nQEylT
6.22” x 3.54” x 2.36” Medium plastic box (the one I put all the parts in) https://amzn.to/40JB9nn
Cable Gland https://amzn.to/3VZNrWb

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The choke in most of my videos is part number 130993. Instead of getting one new I would get a used one. A lot of treadmills come with a choke. Go to eBay and search “treadmill motor choke” BUT know that most people on eBay don’t know what they have and the word "transformer" will also appear in most listings. Problem is a choke and a transformer look almost identical so some listings are for transformers and some are fore chokes because the sellers think they are interchangeable. They are not. They would only be interchangeable if you modify a transformer to work as a choke. (see my DIY choke video) To tell the difference count the wires. A choke will only have 2, a transformer will have 3 or more. Please let me know if I can be of further assistance.