B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
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B41F 33/00 (2006.01) B41F 9/00 (2006.01) G05F 1/12 (2006.01) H02H 3/02 (2006.01) H02H 3/087 (2006.01) H02H 3/44 (2006.01) H02H 9/00 (2006.01)
Patent
CA 1162982
ABSTRACT A high-voltage crowbar circuit continually senses the load impedance and crowbars the output voltage ap- plied to a load if the load impedance falls below a selected value. A differentiator circuit at the load senses variations in load voltage and can trigger the crowbar operation if the voltage variation as a function of time exceeds a preselected value.
351808
Howard Velmar E.
Klett Keith K.
Sammann Ernest A.
Verdeyen Joseph T.
Hurletron Altair Inc.
Smart & Biggar
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