EGS002 Sinewave inverter module

[MJS]

I accidentally came across these on eBay. Inspired by the Valhalla rebuild thread, I wonder if these would make an alternative TT power supply or mains regenerator. Has anyone played with one?

https://www.egmicro.com/download/EGS002_manual_en.pdf

 

[Arkless Electronics]

There's a lot of external stuff to be added.... Personally I'd still do it the way it would have been done 30 years ago. Easier, better and much more repairable....

 

[S-Man]

When I designed my own "Lingo" many years ago, I found that the hardest bit is getting a stable o/p voltage.
Digital logic has zero PSRR (wrt analogue signals) and generating a sine wave that doesn't beat with the 50Hz mains is not trivial. This PWM technique has unknown THD and amplitude stability.
With an AC motor the voltage variations modulate the torque of the motor and IME this is audible.
After all this you would still need to generate a sine wave at 90deg phase shift.

... I agree with Mr Arkless.