Re: [Emc-users] off topic - device info needed

[<kqt...@gm...>]

On Mon, 26 Nov 2012, Jon Elson wrote:

> They are phase angle SCR controllers.  You put a variable resistance
> across two of the terminals, and they vary the power to a line-powered
> device.  Basically a heavy-duty lamp dimmer.
>

can you give me an example of a 21st century equivalent
would this device, a rectifier, and capacitor be adequate for a stepper power supply

richard