Radio frequency coupled differential sensor coil for improved mu

Details Radio frequency coupled differential sensor coil for improved mu Radio frequency coupled differential sensor coil for improved mu

1982-09-08

1984-12-04

Krawczewicz, Stanley T.

Electricity: measuring and testing

Electrical speed measuring

Including 'event' sensing means

G01P 366

Patent

active

044867107

ABSTRACT:
A radio frequency coupled differential sensor coil is configured to measure uzzle velocity of a projectile with improved accuracy. An inner loop of the sensor is positioned to be responsive only to the passage of the projectile and the inner and outer loops are equally responsive to exitation from extraneous sources. A differential amplifier circuit is utilized to cancel the extraneous source signals and amplifying the pulse signal generated by the passage of the projectile through a confined radiation plane.

REFERENCES:
patent: 4228397 (1980-10-01), Schmidt
patent: 4342961 (1982-08-01), Zimmermann et al.

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