Resources Contact Us Home
Multistand AC/DC converter with baseline crossing detection

Image Number 4 for United States Patent #5654884.

The current invention provides circuitry for use in an integrated circuit controlled voltage doubler/bridge circuit such that during any period wherein a lack of AC supply voltage is detected by the circuitry and following a period of AC input voltage within a lower defined range of values, repeated triac firing pulses are provided such that the AC supply will be rectified and doubled as soon as such a supply returns, whether the supply returns with the same or opposite polarity to that which it had, just before being interrupted.

  Recently Added Patents
Image forming apparatus
Display apparatus, a method for a display control, and program
Method for switching channels in a wireless communication network
Sealing member for piezoelectric resonator device, and piezoelectric resonator device
Mobile communication terminal provided with handsfree function and controlling method thereof
Vehicle display system or projection display for a motor vehicle, and calibration method
  Randomly Featured Patents
Wireless LAN device, wireless LAN system, and communication method for relaying packet
Apparatus for recording and reproducing band-compression coded video data
Bootable programmable logic device for internal decoding of encoded configuration data
Apparatus for the automatic doffing of textile machines such as winding machines
Semiconductor device and method of fabricating the same
Brake control apparatus in diagonal braking hydraulic pressure supply system for use in motor vehicles
Headbox for paper machine with hollow expanding member for profile bar adjustment
Preparation of organic pieces of optical quality and especially organic lenses
Detecting recurrence and high stage bladder carcinoma
Methods for purifying camptothecin compounds