Both AC and DC motors are subject to torque variation, which may cause periodic or continious speed error.
The ideal "motor" would be a heavy weight applying torque to a pulley (like a grandfather clock). Wind it up before each record. Speed control would be based on a turntable rpm measurement and implemented via an electonic eddy current brake.
Very "retro" and "high-tech" at the same time, and therefore in fashon.
The ideal "motor" would be a heavy weight applying torque to a pulley (like a grandfather clock). Wind it up before each record. Speed control would be based on a turntable rpm measurement and implemented via an electonic eddy current brake.
Very "retro" and "high-tech" at the same time, and therefore in fashon.