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Fail-safe bidirectional valve driverCross-coupled diodes are added to commonly used bidirectional valve driver circuit to protect circuit and power supply. Circuit may be used in systems requiring fail-safe bidirectional valve operation, particularly in chemical- and petroleum-processing control systems and computer-controlled hydraulic or pneumatic systems.
Document ID
19730000450
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Fujimoto, H.
Date Acquired
August 7, 2013
Publication Date
February 1, 1974
Subject Category
Machinery
Report/Patent Number
NPO-11958
Report Number: NPO-11958
Accession Number
73B10450
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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