On Thu, 29 Nov 2007 15:51:52 -0500, "Eisboch"
wrote:


"Short Wave Sportfishing" wrote in message
.. .
On Thu, 29 Nov 2007 15:14:38 -0500, "Eisboch"
wrote:


wrote in message
...
On Thu, 29 Nov 2007 20:12:22 GMT, Short Wave Sportfishing
wrote:

On Thu, 29 Nov 2007 13:12:52 -0500, wrote:

Another big breakthrough in electric motor efficiency is PWM, or
"pulse width modulation" used for controlling the speed

Sorry - I didn't see your answer until it was too late.

Thanks for the backup! LOL

Is it used in both AC induction motors as well as DC permanent magnet
motors?

Well, yes - with a qualification.

My knowledge of it comes from communications technology and what I
read with respect to my new trolling motor.

But I believe it is used in both.

I could be wrong.

I often am.

Are? :)

This is good stuff. (the answer is "yes"). Everyday I feel like technology
is leaving me in the dust, especially since I stopped working and trying to
keep current.

Tell me about it. They left my mumbling to myself in '94. :)

Turns out it's also responsible for the higher quality of SACD recordings.

Didn't know that.