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
Electronic package with fluid flow barriers
Utilizing virtually stored media snapshots for rasterizing print jobs
Communication terminal, communication system, server apparatus, and communication connecting method
Link establishment in a wireless communication environment
Guitar strap attachment means
Prevention and treatment of osteoarthritis
Decoding and presentation time stamps for MPEG-4 advanced video coding
  Randomly Featured Patents
Growth of group III nitride-based structures and integration with conventional CMOS processing tools
Expansion joint
Removable divider drawer system
Device for automatically supplying a predetermined amount of at least one sort of feed to an animal in a predetermined period
Cat cracking feed preparation
Semiconductor device
Starter magnet switch
Through-cowl strain relief assembly for outboard motor
Enabling speech within a multimodal program using markup
Flocked fabric suitable as outerwear