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BATTERY CHARGING CIRCUIT

  • US 20100117600A1
  • Filed: 04/24/2008
  • Published: 05/13/2010
  • Est. Priority Date: 04/24/2007
  • Status: Abandoned Application
First Claim
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1. Battery charging circuit comprising a mains transformer with a primary and a secondary winding, at least one capacitor connected in series with a terminal of the secondary winding, and a pair of diodes connected with their different electrodes to an other terminal of the secondary winding, characterized in that the other electrodes of said diodes (D1, D2) constitute output terminals of said circuit for connection to a battery (B) to be charged, the terminal of said capacitor (C1) other than that connected to the secondary winding is connected to one of said output terminals, furthermore said capacitor (C1) is an electrolytic capacitor with at least 100 μ

  • F capacitance and at least one further electrolytic capacitor (C2, C3) with similar capacitance can be connected in parallel to the first capacitor by means of a controlled semiconductor switch (K3), and at least one of said primary and secondary windings (1, 2) comprise tap points lead out and connectable through an associated switch (K1, K2).

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