Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1998-03-10
1999-11-16
Wu, Daniel J.
Communications: electrical
Condition responsive indicating system
Specific condition
340639, 361104, G08B 2100
Patent
active
059865571
ABSTRACT:
There is disclosed a multi-phase fuse status indicator having a green "good" and a red "bad" indicator LED for each line fuse of the respective phases, the current to the LED's being pulsed to cause them to provide a blinking indication. Power used for the logic circuit for the LED's and the LED's themselves and the related heat dissipation is less than 10 watts and is supplied from the power lines connected through the fuses regardless of the fuses' condition. Only two simple conductor connections are required from the fuse status indicator to each fused line of the multi-phase power system.
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U.S. Statutory Invention Registration No. H248 to Middlebrooks on Apr. 7, 1987.
Automatic Timing & Controls, Inc.
Trieu Van T.
Wu Daniel J.
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