Microwave hazard alarm

Details Microwave hazard alarm Microwave hazard alarm

1978-02-21

1980-04-22

Griffin, Robert L.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With waveguide or long line

340600, G01R 3102, H04B 116

Patent

active

041997166

ABSTRACT:
A microwave hazard alarm that indicates the presence of microwave radiation from microwave ovens or other transmitting sources by means of a light indicator. The alarm comprises a handheld microwave receiver including an antenna, a detector, a battery powered amplifier, a light emitting diode and a unique circuit connecting the components on a small printed circuit board. The indicating light emitting diode (LED) blinks on and off periodically when the detected microwave power level is safe and below a predetermined power level. At greater power levels the LED stops blinking and glows continuously.

REFERENCES:
patent: 3783448 (1974-01-01), Brodwin
patent: 3873981 (1975-03-01), Bloice
patent: 3919638 (1975-11-01), Belden, Jr.
patent: 3927375 (1975-12-01), Lanoe et al.
patent: 3940699 (1976-02-01), Emgushov
patent: 4032910 (1977-06-01), Hollway et al.
patent: 4044303 (1977-08-01), Reindel

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