Power factor corrected UPS with improved connection of battery to neutral

  • US 6,400,586 B2
  • Filed: 03/20/2001
  • Issued: 06/04/2002
  • Est. Priority Date: 03/29/1993
  • Status: Expired due to Term
First Claim
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1. An uninterruptible power supply (UPS) apparatus, comprising:

  • a power factor correcting converter circuit, configured to connect to an AC power source and to a battery, that generates a DC output voltage from the AC power source in an AC powered mode and that generates the DC output voltage from the battery in a DC powered mode.

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