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Where can I get a 3-phase AC signal generator?
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Ben321:
I know there's industrial single-phase to 3-phase converter units, that use a standard single-phase AC motor to drive a 3-phase generator. However, these are very expensive, and involve working with dangerous high voltage (single-phase motor runs on 120VAC, and the generator output is 277VAC phase-to-ground and 480VAC phase-to-phase). I also know there's cheaper and safer (low voltage 3-phase) solid-state signal generators out there, because years ago, I saw on a website that sold electronic equipment for use in schools and colleges, and they had one that just plugged into a regular 120V outlet, and the front panel of the device had 4 banana-plug sockets (one for each phase, and one for neutral) for the outpout. But for the life of me, I don't remember what website it was that was selling it, or who manufactured this solid state 3-phase AC signal generator.

If anybody here knows of a lab or demonstration type solid-state 3-phase AC signal generator, that's currently being manufactured and sold, please let me know where to find it.
Ian.M:
Any three (or more) channel AWG should be able to output a low voltage, low power three phase signal, if set up correctly.
Ben321:

--- Quote from: Ian.M on October 07, 2022, 05:46:19 am ---Any three (or more) channel AWG should be able to output a low voltage, low power three phase signal, if set up correctly.

--- End quote ---

That's a good idea, but I was just wondering where I could get something that could output a little more power, like for running low voltage 3-phase AC motors or low voltage light bulbs. I remember there being such a device sold on a more educational oriented science equipment website before. It output like 12v 3-phase AC for educational lab and demonstration purposes. But I can't find anything like that on the internet right now.
Berni:
BLDC motors are actually permanent magnet synchronous 3 phase motors/generators.

So just get low RPM high torque brushless motor(like used in RC cars/boats) and spin it with another mother at the desired RPM for the frequency you want.
JohanH:
There are frequency converters one-phase to three-phase with adjustable output voltage. Googling gave me only this:

https://www.alibaba.com/product-detail/ACSOON-AF400W-1-Phase-to-3_60439961502.html

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