Re: [CAD_CAM_EDM_DRO] Re: Question on Power Supply

On 8 Jun 2005, at 00:22, turbulatordude wrote:

> OK, so what about inductors ? well, no one has defined them or

You don't need to know how they work. Think of an inductor in a
current path as being like a flywheel on a drive shaft. It takes some
effort to get it moving, and once it's moving it takes some effort to
stop it again. They try to resist changes in current flow (shaft
speed). It's possible to stop driving the shaft (reduce the input
voltage) for a short time and the flywheel (inductor) will prevent
the speed (output voltage) from dropping too much. To understand back
EMF, think about what would happen if you gradually spun a flywheel
up by hand, then jammed a spanner into the spokes. The flywheel
would, for an instant, generate far more torque than you used to spin
it up in the first place. In the same way, if you interrupt the
current flowing through an inductor it will generate a high voltage
across its terminals in an attempt to keep the current flowing.
Inductors/flywheels cause problems when the current flow/shaft speed
needs to be able to change rapidly.

--
------------ Alex Holden - http://www.alexholden.net/ ------------
If it doesn't work, you're not hitting it with a big enough hammer