Title:
CONTROLLER OF MICROMOTOR IN DENTAL HANDPIECE
Document Type and Number:
Japanese Patent JPS6098890
Kind Code:
A
Abstract:
PURPOSE:To facilitate the operability by stepwisely setting the rotating speed of a micromotor and regulating the rotating speed in the vicinity of the reference rotating speed by a controller with the set step as a reference. CONSTITUTION:When selection switches 1a-1e for stepwisely setting the rotating speed of a motor are operated, signals (a)-(e) corresponding to the switches 1a-1e are outputted from a binary/decimal converter 6. A voltage divider 7 operates switch circuits 8a-8d when the signals (a)-(d) are outputted, a relay contact 10 is closed when the signal (e) is outputted to set the reference rotating speed corresponding to the switches 1a-1e. When the foot controller 12 is regulated, the rotating speed of a micromotor M is regulated in the vicinity of the reference rotating speed. On the other hand, a selection switch circuit 11 fires light emitting diodes 11a-11e in response to the signals (a)-(d).
Inventors:
HARA KAZUAKI
Application Number:
JP20366783A
Publication Date:
June 01, 1985
Filing Date:
November 01, 1983
Export Citation:
Assignee:
YOSHIDA SEISAKUSHO KK
International Classes:
H02P7/288; (IPC1-7): H02P7/288
Domestic Patent References:
| JPS571099B2 | 1982-01-09 | |||
| JPS4834811U | 1973-04-26 |
Attorney, Agent or Firm:
Shunji Ouchi