TROUBLE DETECTING CIRCUIT OF POWER SOURCE APPARATUS

PURPOSE:To discriminate a trouble power source unit, by a method wherein rectifier diodes and fly-wheel diodes of a DC/DC converter which are connected in parallel are respectively provided two cach, and an unbalance current due to the damage of either one of them is detected. CONSTITUTION:Parallell...

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Bibliographic Details
Main Author YANAGISAWA RIYUUICHI
Format Patent
LanguageEnglish
Published 02.07.1984
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:PURPOSE:To discriminate a trouble power source unit, by a method wherein rectifier diodes and fly-wheel diodes of a DC/DC converter which are connected in parallel are respectively provided two cach, and an unbalance current due to the damage of either one of them is detected. CONSTITUTION:Parallelly connected DC constant-voltage current units 1aa, 1bb constitute a DC/DC converter and the output thereof is supplied to load 2. A DC input power source E is subjected to ON-OFF control by a switching transistor Q which is driven by a continuity angle control circuit 12 and inputted to a transformer T1. The secondary output of the transformer T1 is rectified and smoothed to be supplied to the load 2. In this case, two rectifier diodes D1a, D1b and two fly-wheel diodes D2a, D2b are respectively provided and current detecting transformers T2, T3 equipped with inverse polarity windings connected to each diode in parallel detect an unbalance current due to the damage of either one of each diode set. By this mechanism, a trouble power source unit can be discriminated.
Bibliography:Application Number: JP19820224549