SELECTIVE ULTRAVIOLET SIGNAL AMPLIFIER CIRCUIT
A flame detection circuit means that is responsive to an ultraviolet responsive tube is provided with a safety circuit. The safety circuit encompasses a pulse responsive circuit that is responsive to the characteristic conduction pattern of an ultraviolet responsive type of tube and will not respond...
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Main Author | |
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Format | Patent |
Language | English French |
Published |
08.05.1984
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Edition | 3 |
Subjects | |
Online Access | Get full text |
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Summary: | A flame detection circuit means that is responsive to an ultraviolet responsive tube is provided with a safety circuit. The safety circuit encompasses a pulse responsive circuit that is responsive to the characteristic conduction pattern of an ultraviolet responsive type of tube and will not respond to a shunt resistance. The circuit relies on the normal conductivity of a shorting field effect transistor that must be gated into a nonconductive state for an output means to be activated. |
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Bibliography: | Application Number: CA19810387077 |