One more experiment from the "Fun with TEA" dept: How to spin a motor
So I've got this neat model of an 3 phase induction motor.
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1499062;image)
It's label says 50Hz, 24V Strangspannung. So this is the phase voltage across one of the windings. It's wired in delta configuration, so one needs 24V phase-to-phase, which equals 13.8V phase-to-neutral.
Next, I've got this 3 channel amplifier (
http://wunderkis.de/pwramp3/index.html). If you've read this article, you'll know I've built in some provisions to generate a 3 phase output from a single phase input. But hey, that's not the fun of TEA spirit to just use this feature.
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1499068;image)
No, I'm using this triplet of TM500 devices: FG501A. One can link them by trigger in and trigger out connectors, set them to the same (or slightly lower) frequency and fiddle with the knobs until one gets a nice three phase output.
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1499074;image)
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1499080;image)
Feed this into the amplifier, watch the result on the power meter and wonder at the motor spinning:
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1499092;image)