Accession Number:

ADD019317

Title:

Hold-Up Circuit with Safety Discharge for Preventing Shut-Down by Momentary Power Interruption

Descriptive Note:

Patent, Filed 20 Apr 93, patented 27 Oct 98

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1998-10-27

Pagination or Media Count:

6.0

Abstract:

The invention pertains to a storage capacitor of a hold-up circuit is connected by a resistor to the current conducting bus supplying operating voltage to computer hardware from a power source. The capacitor is thereby charged to the operating voltage level in order to subsequently maintain computer operation by discharge through a diode during power interruption of a relatively long duration determined by the capacitor charge and a predetermined drop in voltage applied to the computer load causing its shutdown. Detection of such drop in voltage is operative through an opto-isolator to safely discharge the capacitor by relay controlled grounding thereof.

Subject Categories:

  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE