DIY Turntable Motor Drive
Posted: Fri Dec 14, 2007 7:37 am
I started a new thread for R&D rambling purposes based on an Altmann design. Please - kool-aid drinkers only.
I've spent the last two months fiddlin' with different motor control circuits based on Altmann's use of a 7.5 deg stepper as a pseudo AC sync motor. He then drives it with an Ipod device (two 90 degree apart sine waves around 60Hz) and a stereo (as the power driver). I started to implement this with two of the Hitachi IC amp boards (the 18W mono amps you see for $12) and a Wein Bridge Oscillator.
[EDIT will continue]
I've spent the last two months fiddlin' with different motor control circuits based on Altmann's use of a 7.5 deg stepper as a pseudo AC sync motor. He then drives it with an Ipod device (two 90 degree apart sine waves around 60Hz) and a stereo (as the power driver). I started to implement this with two of the Hitachi IC amp boards (the 18W mono amps you see for $12) and a Wein Bridge Oscillator.
[EDIT will continue]