×

Two relay switching circuit for fluorescent lighting controller

  • US 5,309,068 A
  • Filed: 02/19/1993
  • Issued: 05/03/1994
  • Est. Priority Date: 02/19/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A power-switching circuit for selectively switching power between a power source and a load, said power-switching circuit comprising:

  • (a) first and third electrically-controllable switches connected in parallel between said power source and load;

    (b) a second switch connected in series with said first switch, said second switch being electrically controllable; and

    (c) means for sequentially closing said first, second and third switches in that order.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×