×

Control of initial current transients

  • US 6,765,373 B1
  • Filed: 03/28/2002
  • Issued: 07/20/2004
  • Est. Priority Date: 03/28/2002
  • Status: Active Grant
First Claim
Patent Images

1. A method for providing power for N1 electrical devices, numbered n=1, . . . , N1 (N1

  • 2), where each device has an associated current transient I(n) upon power-up or power-down, the method comprising;

    providing a set of Q1 subsets of the N1 devices, numbered q=1, . . . , Q1, where Q1 is an integer ≧

    2 and the sum of the current transients I(n), for at least one of device power-up and device power-down, for all devices in at least one subset number q is no greater than a selected current value I(max;

    q) that may depend upon q; and

    when at least one device in subset q′ and

    at least one device in subset q′

    +1 are in an active mode for at least one index q′

    (1≦

    q′



    Q1

    1), (i) initiating delivery of current to the devices in subset number q′

    at a selected time t(q′

    ) and (ii) initiating delivery of current to the devices in subset number q′

    +1 at a selected time t(q′

    +1), where t(q′

    +1)−

    t(q′

    ) is at least equal to a selected positive threshold time delay Δ

    t(thr;

    q′

    ;

    q′

    +1).

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