Circuitry for simultaneously performing integration and division

Details Circuitry for simultaneously performing integration and division Circuitry for simultaneously performing integration and division

1981-04-16

1983-06-14

Ruggiero, Joseph F.

Boots, shoes, and leggings

307498, 328127, 364841, 364850, G06G 718, G06G 716

Patent

active

043886949

ABSTRACT:
The disclosed circuitry for integrating an analog voltage signal with respect to time, t, while simultaneously dividing the integral by time, t, is valuable for use in medical pulmonary analyzers and includes a ramp generator for developing a voltage level proportional to time, a duty cycle modulator for generating an inverted time signal, 1/t, a multiplier for multiplying the analog voltage signal, V, by the inverted time signal, 1/t, followed by an integrator to produce the required output of 1/t .intg.V dt.

REFERENCES:
patent: 3624643 (1971-11-01), Richman
patent: 4059751 (1977-11-01), Eriksson
patent: 4122528 (1978-10-01), Rieger
patent: 4158234 (1979-06-01), Grandchamp

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