ESC to Solid State Relay to Motor? [Archive]

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Daddio

Jan 29, 2003, 03:14 AM

Can I control a big DC motor by using my regular ol' speed 400 ESC to drive a solid state relay, which will control the large DC motor. I know that will only accomplish one-way operation with no brake... I think.

I'm guessing the switching rate of the relay vs the rate of the ESC is important

Anybody done this?
Thank you! D²

Gary Warner

Feb 07, 2003, 12:39 PM

Most solid state relays are not more than mosfets inside them. Consider changing and or upgrading the fets used on your current controller.

I did this to a small 10 amp controller and used it on my weight lifting airplane. 10 cells to an Astro FAI05G and 12x10 prop is 50 amps - no problems yet. I used 6 IRFZ44's. $1.85 each at local surplus store.