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
Trusted e-mail communication in a multi-tenant environment
Image forming apparatus that selectively changes current-feed ratio
Nonvolatile memory controller with two-stage error correction technique for enhanced reliability
Manipulating parameterized cell devices in a custom layout design
Generating and implementing a signal protocol and interface for higher data rates
Yoga mat
Electric toothbrush head
  Randomly Featured Patents
Single release, multiple axis coupling
Polypeptide carrier protein
Method of detecting characteristics of films using eddy current
Phthalazine derivatives phosphodiesterase 4 inhibitors
Application of GPS to a railroad navigation system using two satellites and a stored database
Injectable gamma globulin
Method of dimensionally stabilizing interface between dissimilar metals in an internal combustion engine
Deposition methods for the formation of III/V semiconductor materials, and related structures
Cell refresh circuit of memory device
Traffic shaping of cellular service consumption through modification of consumer behavior encouraged by cell-based pricing advantages