Pontentiometer with an optical position encoder
A compact low profile fader has an elongate support ( 10 ) and a manually settable slider ( 12 ) mounted for linearly slidable relative to the elongate support ( 10 ). A drive transmission ( 16 ) operably interconnecting the slider ( 12 ) and a digital encoder ( 14 ) so that movement of the slider (...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A compact low profile fader has an elongate support (
10
) and a manually settable slider (
12
) mounted for linearly slidable relative to the elongate support (
10
). A drive transmission (
16
) operably interconnecting the slider (
12
) and a digital encoder (
14
) so that movement of the slider (
12
) produces a digital output signal from the digital encoder (
14
). The digital encoder (
14
) has a rotatable encoder disk (
46
) and is mounted so that its longitudinal direction of extent is in alignment with that of the elongate support (
10
). The drive transmission (
16
) includes a drive pulley (
60
) and a loop of cord (
18
) which is wound around the pulley (
62
). The pulley (
60
) drives the rotatable encoder (
46
) and has a helical groove in its peripheral surface. The cord (
18
) is engaged in the helical groove and with the slider (
12
) so that movement of the latter causes the pulley (
260
), and thereby the rotatable encoder disk (
46
), to be rotated. |
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