Resources Contact Us Home
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
Antenna device
System for purifying air through germicidal irradiation and method of manufacture
Method for conductivity control of (Al,In,Ga,B)N
Economic filtering system for delivery of permission based, targeted, incentivized advertising
System and method for interactive image-based modeling of curved surfaces using single-view and multi-view feature curves
System and method for optimizing utilization of inventory space for dispensable articles
  Randomly Featured Patents
Animated doll having axially rotated grasping limb action
Carbazole carboxamide compounds useful as kinase inhibitors
Data storage, data processing system and method
Syringe container
Guard bed catalyst for organic chloride removal from hydrocarbon feed
Adjustable stripping tool
Attachment device
Ink cartridge refill apparatus
Coupling syringe system and methods for obtaining a mixed composition
Chair shade