Circuitry for use with a transducer which generates a signal cor

Details Circuitry for use with a transducer which generates a signal cor Circuitry for use with a transducer which generates a signal cor

1974-05-17

1976-06-22

Miller, Jr., Stanley D.

73 885R, G01N 2700, G08B 1900

Patent

active

039654290

ABSTRACT:
The present circuit is primarily designed to be employed with a transducer which generates a signal in response to some physical phenomenon and said present circuit provides a direct current signal which is an excellent representation of the intensity of said physical phenomenon. In addition said circuit has excellent response over a broad frequency range as related to said physical phenomenon and has high signal to noise ratio. The present circuit principally utilizes a low pass filter which provides a relatively flat response at all frequencies below one-half of the carrier frequency as well as employing a notch filter designed to filter signals at twice the carrier frequency. The twice filtered signal is a low ripple direct current signal having the earlier described characteristics.

REFERENCES:
patent: 2495511 (1950-01-01), Dolberg
patent: 2968031 (1961-01-01), Higa
patent: 3229210 (1966-01-01), Frank et al.
patent: 3344283 (1967-09-01), Stubbs
patent: 3852672 (1974-12-01), Nelson

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