Resources Contact Us Home
Method and device for producing an electric heating current, particularly for inductive heating of a workpiece

Image Number 3 for United States Patent #RE41796.

A heating current used to inductively heat a metallic or magnetic work-piece is generated by an inverter supplied by a supply voltage. The inverter includes four switching elements arranged in an H-bridge circuit having two parallel longitudinal branches and a transverse branch. The switches are controlled so the heating current flows through the transverse branch. The diagonally opposed switching elements are switched from a conductive to a non-conductive state in a temporally staggered manner.

  Recently Added Patents
RPM Controlled Wind Power Generation System
Squib control circuit
Multi-mode 3-dimensional image display apparatus
Sacrificial spacer approach for differential source/drain implantation spacers in transistors comprising a high-k metal gate electrode structure
Systems and methods for printing images outside a normal color gamut in image forming devices
High-density 3-dimensional structure
Sign language keyboard and sign language searching apparatus using the same
  Randomly Featured Patents
Wnt signaling inhibitors, and methods for making and using them
Computer controlled labeling machine for applying labels including stretch labels and tactilely sensible indicia on articles
Telephone handset and stand therefor
Method to handle SCSI messages as a target
Ammonium thiosulfate products and methods of making the same
Process for producing regenerated cellulosic fibers
Method for treating subterranean formation
Composition and method for reducing blood sugar levels in diabetic humans
Wiper for vehicles
Pedal device with function of adjusting pedal effort and hysteresis