Circuit arrangement for generating an actuating signal for a piezo-electric element of a positioning device
CA 1211556 A · Owner: N.V. Philips'Gloeilampenfabrieken · Inventors: Suss, Dietfried
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
24, ABSTRACT:, Circuit arrangement for generating an actuating voltage for a piezo-electric element of a positioning device. In a circuit arrangement for generating an actuating voltage for a piezo-electric element (1) of a positioning device, which is intended in particular for positioning a recording and/or reproducing head relative to an information track, a control signal whose amplitude is representative of a positional error is applied to a signal conversion stage (7) in the form of an amplitude modulator whose output signal is applied to the primary (10) of a transformer (11), to whose secondary (12) the piezo-electric element is connected via a bipolar switching device (13), which …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted September 16, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 16, 2003.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.