Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1982-07-13
1984-06-05
Krawczewicz, Stanley T.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 61R, G01R 2704, G01R 2726
Patent
active
044531257
ABSTRACT:
A microwave alcohol fuel sensor comprises a microwave oscillator, a microwave receiver, and a microwave transmission circuit connected to the oscillator and the receiver. The microwave transmission circuit comprises a dielectric substrate and, a strip line mounted on the substrate so that microwaves leak from the substrate to an alcohol gasoline fuel, and the microwaves attenuate by alcohol dielectric loss, whereby output voltage from the receiver corresponds to alcohol content rate. The dielectric substrate is formed tubular so that a constant amount of the fuel is fed the sensor.
REFERENCES:
patent: 2703079 (1953-03-01), Argento
patent: 3508145 (1970-04-01), Reed
patent: 3691454 (1972-09-01), Hrubesh
Endo Akira
Kimura Katsuhiro
Morozumi Hiroshi
Shibata Takanori
Hitachi , Ltd.
Krawczewicz Stanley T.
Solis Jose M.
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