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Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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Re: Thanks again

Posted by Thomas on March 26, 2002 at 02:20:15:
Well, I have no idea what an Xtal source is. Also, I will need to study the Wein bridge oscillator curcuit more to understand it. I am still curious how this Axis motor control board works. I found this on rec.audio.tech:
"Motor is driven by two analog high voltage power stages,which provide two artifical generated sine waves with 90 degree phase shift.
So far I tracked down the circuitry. It consists of standard OPs,comparators and CMOS-analog-switches. A little bit tricky,as it incorporates what I call a mixed analog/digital feedback loop.Maybe a zero crossing detector on the motor-windings,which is coupled trough flip-flops and analog switches to the oscillator."
Would this info ring a bell?
When I meaure, do you mean that I should measure both the AC line and the line going to the motor?
Thomas