Magnetic recording and reproducing device

Abstract

Abstract PURPOSE:To improve the rotation precision and to make a product low-cost by providing a magnetized part, where N and S poles are formed alternately, in the peripheral end part of the rotor of a rotary transformer and forming magnetic poles for rotation position generator of about a half size of said poles in optional magnetic poles of the magnetized part and arranging a magnetic detecting means at the vicinity of a magnetized part. CONSTITUTION:Channel coils 41 and 42 are assembled in a rotor 40 in concentric rings, and a magnetized part 45 where N poles 43.43... and S poles 44.44... are formed alternately is provided in the peripheral end part. Magnetic poles 46 and 47 for rotation position generator of about a half size of poles 43 and 44 are formed in optional N pole 43 and S pole 44 forming the magnetized parr 45, and a rotor 40 is formed with a magnetic material in the magnetized part 45, and the rotor 40 is combined with a stator 48 corresponding to the rotor 40 to constitute a rotary transformer 49. If frequency generators and rotation position generators are used while utilizing the rotary transformer they are equipped easily because the rotary transformer requires high-precision attachment.

Inventors

• 👤 Kazuo Sato
• 👤 和男 佐藤

Bibliographic Details