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A REACTOR SAFETY SYSTEM USING TRANSISTORS AND SILICON CONTROLLED RECTIFIERS

Journal Article · · IRE Trans. Nuclear Sci.
An all-semiconductor reactor safety system is described which consists of a d-c amplifier, an adjustable trip level bistable circuit, a diode logic circuit, and a power switching circuit. The d-c amplifier is a simple emitter follower transistor stage. Three transistors are used in the bistable circuit, two in a Schmitt-trigger arrangement and one as an output drive. The diode logic circuit uses a combination of OR and AND gates to give 2-out-of-3 coincidence of the bistable circuit outputs. A unijunction transistor and two silicon- controlled rectifiers are the active elements in the power switching circuit. These components are particularly well suited for the on-off control needed in reactors and the circuitry is reasonably fail-safe. ( auth)
Research Organization:
General Electric Co., West Lynn, Mass.
Sponsoring Organization:
USDOE
NSA Number:
NSA-15-005798
OSTI ID:
4111752
Journal Information:
IRE Trans. Nuclear Sci., Journal Name: IRE Trans. Nuclear Sci. Vol. Vol: NS-7, No. 4
Country of Publication:
Country unknown/Code not available
Language:
English