Tweakers' Asylum

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

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How does the Valhalla and Lingo work?

Posted by Thomas on March 24, 2002 at 16:20:59:
I have very poor knowledge of how these things work and also about electronics in general. To generate two artificial sine waves, there must be some kind of stable oscillator curcuit that later is amplified and then that signal drives the motor. How does the Valhalla and Lingo work to generate the sine waves? I've read the Lingo use some kind of crystal, but how does the Valhalla work?
I really don't get how the Linn Axis PSU work to generate the artifical sine waves. There should be some similarity with the Valhalla, but I don't know whether the Valhalla decreases the voltage to drive the motor silently as the Linn Axis PSU does. Doesn't the Lingo decrease voltage fed to the motor after power-up?
Thomas