Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Driver circuit for a d.c. motor without commutator










Image Number 5 for United States Patent #5134682.

A method is disclosed for the low-loss regulation of a d.c. motor without commutator and of a semiconductor circuit in which, during a commutation phase at reduced motor power or rpm as given by a position indicator, the end transistors or one end transistor initially operates temporarily as a switch and thereafter temporarily as an analog amplifier element. During the analog period, a current is available which changes slowly according to a ramp function.








 
 
  Recently Added Patents
Methods, apparatus, and systems for facilitating control communications between disparate devices
Automated incorporation of expert feedback into a monitoring system
Semiconductor thin film, thin film transistor, method for manufacturing same, and manufacturing equipment of semiconductor thin film
Panel for decoration
Contamination barrier
Changing a system clock rate synchronously
Voltage detection apparatus and combination circuit
  Randomly Featured Patents
Hydraulic drive system for forging press or forging machine slides
Soft steroids having anti-inflammatory activity
Radiation-polymerizable mixture and photopolymerizable copying material prepared therefrom
Anti-EphB2 antibodies and methods using same
Method of manufacturing medical electrode pads
Soil repellents derived from fluorinated acrylates and aromatic amines
Semiconductor device equipped with antifuse elements and a method for manufacturing an FPGA
Sharing a transmission control protocol port by a plurality of applications
Inner type touch panel, process for producing the same and display unit
Headset