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
Circuit for and method of enabling communication of cryptographic data
Optical switching device and communications system
Pharmaceutical and diagnostic compositions for use in the treatment and diagnosis of neurodegenerative diseases or amyloid diseases
Authenticated secret sharing
Flexible quantization
Systems and methods for providing a video playlist
Key management using quasi out of band authentication architecture
  Randomly Featured Patents
Process for the preparation of thiocarboxylate silane
Ink-jet printhead having high nozzle density
Computer-controlled copier-printers
Shoe sole
Unitary wafer plasma enhanced chemical vapor deposition holding device
Flip-flop circuit
Easy open bag
Circuit arrangements for providing saw-tooth currents in coils
Ornamental seat belt shield
Thermal transfer electroprinting apparatus