Resources Contact Us Home
Driving device for a stepping motor

Image Number 7 for United States Patent #4959601.

In a driving circuit for a stepping motor in which a phase current corresponding to a predetermined reference voltage is generated when an excitation signal for each phase of the stepping motor is being produced and a coil of the corresponding phase is excited by the phase current, the supply time of the phase current is controlled by the pulse signal of a pulse generator for varying the pulse width, thereby improving the rising state of the phase current.

  Recently Added Patents
LED illumination systems
System and method for operating an electric power converter
Vertical gate LDMOS device
Optical input device
Antenna module and wireless communication apparatus
Mobile interactive kiosk method
Surface acoustic wave resonator for down-hole applications
  Randomly Featured Patents
Transition fitting
Fluid for injection into a subterranean reservoir to displace hydrocarbons in the reservoir
Microstrip dot termination usable with optical modulators
Information processing unit and information processing related units
Internal swivel door for compartment of a vehicle
Peripheral termiticide delivery system and method
MOS charge pump
Skin package
Pressure gage device having a tube spring associated with a venting valve to adjust a preset