On Tuesday 18 November 2003 06:47, Neil Carr G0JHC wrote:
> I'm wanting to fit a front panel control on my latest amp project which
> will allow me to reduce the speed (and noise) of my EBM blower, (G2E-140)
> especially during long periods in receive.
>
>
>
> This doesn't have to be anything clever that monitors temp or slows
> down/speeds-up when keying/unkeying the amp (but I would consider something
> if simple to construct), But nothing more than an inductive control. I have
> of course already made the mistake of trying a number of off the shelf
> house hold items (that were resistive, silly me), and also have a 240v
> ceiling fan control board, which for some reason, although works fine,
> produces a heavy hum on the motor? My simple varibale Variac does a great
> job.
Have you tried a series capacitor?
Steve
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