Products > Test Equipment
Where can I get a 3-phase AC signal generator?
Le_Bassiste:
have a look here:
https://www.leybold-shop.com/three-phase-generator-725721.html
Martin72:
I think with the last post the question was answered.
Although it could be interesting to check if this :
--- Quote ---You could get a small VFC with 3 phase output and use 3 stepdown transformers
--- End quote ---
Wouldn´t be a cheaper solution.
Apart from this, 2 decades ago we were in the need for a AC source with three phases and frequencies between 2...4khz, voltages up to 140Vrms.
No solution on the market...what to do...
We´ve modified a sinewave-generation pcb* in such manner to get the frequencies up to 4khz.
And then feeding the three-phase sinewaves into ordinary audioamplifiers, in this case PA amplifiers.
Got a huge advantage, outputfilters are not needed.
*)3-phase sinewaves generated by a PLD, Eprom, 8-Bit ADCs and U/I conversion/filtering.
artag:
It might have been made by Feedback
They used to produce a lot of equipment for educational use, and a 3-phase low power system would be suitable for running an ac servo
Here's a typical bit of Feedback kit : https://www.ebay.co.uk/itm/185508991896 - they very often used that blue case.
And here's a very education-specific piece https://www.ebay.co.uk/itm/154557379115
artag:
--- Quote from: Berni on October 07, 2022, 07:10:13 am ---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.
--- End quote ---
You could also use a BLDC sensorless driver. These are available at very low cost and used to run drone motors. Some even have open software.
bdunham7:
Probably the cheapest and easiest way (other than an expensive dedicated device) to bodge together some moderate-power three-phase is the get 2 FY6900 AWGs and 2 FPA2000- series amplifiers from eBay or Aliexpress. That will give you four channels of arbitrary output and up to 50W/channel, 25Vrms @ 2A.
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