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Battery charger

  • US 3,090,904 A
  • Filed: 01/12/1959
  • Issued: 05/21/1963
  • Est. Priority Date: 01/12/1959
  • Status: Expired due to Term
First Claim
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2. IN A BATTERY CHARGER, A POWER SOURCE, A TRANSFORMER ENERGIZED FROM SAID POWER SOURCE AND HAVING A RESONANT CIRCUIT AS PART THEREOF INCLUDING A WINDING AND A CAPACITOR, AN OUTPUT WINDING MAGNETICALLY COUPLED TO SAID WINDING OF SAID RESONANT CIRCUIT ADAPTED FOR ELECTRICAL CONNECTION WITH A BATTERY TO BE CHARGED, MEANS FOR CHANGING THE RESONANCE OF SAID RESONANT CIRCUIT THROUGH A CHANGE IN THE CAPACITY THEREOF WHEREBY TO INCREASE THE VOLTAGE OUTPUT OF SAID CIRCUIT AND THEREFORE THE CHARGING RATE OF SAID BATTERY, AND A TIMER FOR CONTROLLING SAID RESONANCE CHANGING MEANS.

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