Transformerless AC/DC converter

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20040032756A1
SERIAL NO

10387119

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

AC/DC converters comprise rectifiers for rectifying AC signals into DC signals. By providing these AC/DC converters with voltage dividing capacitors located between converter-input, a resistor, added to voltage dividing capacitor for filtering peak signals, and a rectifier, the rectifier can be better integrated, as it no longer receives the entire input voltage present at the converter-input of the AC/DC converter, without a conventional transformer comprising an iron core and windings being required. Such an AC/DC-converter is small sized, of light-weight and low costly made. Preferably, the converter-input is symmetric, the rectifier comprises two diodes and two transistors and a zero-cross detector for switching the transistors, the AC/DC converter comprises a down-converter located between the rectifier and converter-output for further down-converting purposes and comprising an inductor and a regulator for regulating inductor/capacitor-energies, with buffer capacitors being present in parallel to the down-converter for stabilising purposes, to get a transformerless wall plug adapter.

First Claim

See full text

Other Claims data not available

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
STMICROELECTRONICS N V1118 BH SCHIPHOL AIRPORT AMSTERDAM

International Classification(s)

loading....
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances200320042005200620072008200920100255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Van, Den Bossche Luc Jozef Louis Lebbeke, BE 1 33

Cited Art Landscape

Load Citation

Patent Citation Ranking

  • 33 Citation Count
  • H02M Class
  • 83.33 % this patent is cited more than
  • 21 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges611163351810542401 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9005101520253035404550556065707580859095100105110115120

Forward Cite Landscape

Load Citation