Title:
PULSE GENERATOR FOR MOTOR
Document Type and Number:
Japanese Patent JPH08237909
Kind Code:
A
Abstract:
PURPOSE: To increase PG output, improve a SN ratio and eliminate the influence of interference with FG without increasing costs.
CONSTITUTION: With respect to a motor 1 having a rotor made rotatable to a stator fixed to a printed circuit board 4 in which a wiring circuit pattern is formed on a board comprising aluminum or iron, a projection part 21 for projecting a part of the printed circuit board 4 is provided at the center of a spiral PG pattern coil 18 formed on the printed circuit board 4, and the PG pattern coil 18 is seemingly made to magnetically come near to a PG magnet 17.
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Inventors:
NISHIKAWA MITSUO
Application Number:
JP3701495A
Publication Date:
September 13, 1996
Filing Date:
February 24, 1995
Export Citation:
Assignee:
SONY CORP
International Classes:
G01P3/487; H02K11/00; H02K29/00; (IPC1-7): H02K11/00; G01P3/487; H02K29/00
Attorney, Agent or Firm:
Akira Koike (2 outside)