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Discover Isostase
The idea of Isostase in one minute, then the unit running on a Transrotor Zet 3: start, cleaning mode, silent run and stop. The narration is in English, with a synthetic voice.
Isostase, closed-loop motor control for Transrotor turntables
One minute on the idea. A synchronous motor follows its frequency, but the platter does not always follow the motor. An optical sensor reads an index disc under the platter and the speed is corrected once per revolution. Then the display, the three speeds, the menus in six languages, one or two motors and the automatic phase adjustment.
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Isostase on a Transrotor Zet 3: start, clean, silent run, stop
A complete run recorded on the unit's own display, with two motors on a Transrotor Zet 3. Cleaning mode starts the ramp: 33.33 rpm in under 5 seconds, then 10 seconds at full power. Silent run lowers the drive voltage to 30 % to reduce possible vibration, while speed regulation holds 33.33 rpm. The brake takes about 2 seconds. Start and stop are shown at half speed.
- 0:00Overview
- 0:12Start
- 0:25Cleaning mode
- 0:38Silent run
- 1:00Stop
- 1:09Olydyne
Transcript
A complete run of Isostase driving the two motors of a Transrotor Zet 3: start, cleaning, silent run, stop. This is the unit's own display, recorded live. At start, the platter accelerates from standstill, already in cleaning mode, at full power. In under five seconds it reaches thirty-three point three rpm, with both motors driven. Once at speed, a ten-second countdown begins. The platter keeps turning at thirty-three point three three rpm, still at full power. A progress bar shows the time left. Then Isostase switches to silent run: the drive voltage drops to thirty percent, to reduce any vibration. The speed stays on target at thirty-three point three three rpm, and the displayed deviation stays within plus or minus point zero three percent. Each motor draws about thirty milliamps. On stop, the platter brakes from thirty-three rpm to standstill in about two seconds. Then the unit returns to standby. Start, clean, run silently, stop. One screen, two motors. More at olydyne dot com.
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