A SIMPLE TEST OF SPEED OF RESPONSE OF ELECTROCARDIOGRAPHS

Journal/Book: Reyrinted from AMERICAN HEART JOURNAL St. Louis Vol. 67 No. 4 Pages 524-528 April 1964 (Copyright(c) 1963 by The C. V. Mosby Company) (Printed in the U. S. A.). 1964;

Abstract: From the Departments of Pharmacology and Electrical Engineering University of British Columbia Summary A convenient test of the speed of response of an electrocardiograph can be provided by a very simple circuit. This provides an exponential pulse with a timeconstant of 6.3 milliseconds and an equal voltage step. For a direct-writer which barely meets the minimum requirements of the American Medical Association the recorded amplitude of the pulse is approximately 50 per cent that of the step. If the tester is incorporated in the conventional calibration circuit only a capacitor and a button switch need be added. . . .

© Top Fit Gesund, 1992-2024. Alle Rechte vorbehalten – Impressum – Datenschutzerklärung