[Amps] slow down circuits for 240v blower

[Jeffrey Madore]

> 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.

> Have you tried a series capacitor?

An oil filled cap can work. It can also cancel the series XL of the motor
winding. Not so good.  What you want is enough Z to limit the current and
reduce torque. Experiment while monitoring parameters. A switching type
circuit might be more flexible and adjustable.

Jeff


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