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Motors and Belt
Setting the two phases of a motor, the angle between two motors, and belt wear monitoring: three short animations on how Isostase handles them. The narration is in English, with a synthetic voice.
Ninety degrees, exactly? Why the two phases of a motor must be set with care
A 2 min 26 animation in English. A synchronous motor with two windings: circular or elliptical rotating field, the backward component and its parasitic torque at twice the supply frequency, why the two windings of a real motor are never identical, and how Isostase measures the current in each winding to correct the amplitude ratio and the angle's distance from 90°. The aim: a round field, less parasitic torque and less motor heating.
Turntable motors: why 90° is not enough (article) · Isostase: the product
Two motors, one platter: setting the angle between them
A 1 min 59 animation in English. Why, on a turntable with two motors fed at the same frequency, the same speed does not mean the same position: each rotor's lag, one motor pulling harder than the other. Current does not show it; Isostase relies on the regularity of the platter speed measured by the optical sensor, shifts motor B by up to ±10°, refines in steps of 2°, 0.5° and 0.1°, keeps the result only if the speed is clearly more regular, then balances the two motor currents within 2%.
Dual-motor turntables: why synchronisation matters (article) · Isostase: the product
Your turntable belt, watched: how Isostase does it
A 1 min 57 animation in English. A belt stretches, hardens or slips over time, and the speed drifts slowly without you noticing. Isostase corrects the speed, but the effort of the correction tells a story: a belt-hours counter with a reminder at a number of hours you choose, a trend of the correction effort (about one point every 20 hours, per speed, the last eight kept, trend assessed over at least 100 hours) with a message when the belt is worth checking, and an automatic 5-minute platter rotation after several days of rest (7 by default, optional, unit powered) so the belt does not take a crease.
Other themes: Discover Isostase · Platter Speed · All videos