Title :
An LED-Transistor Photoplethysmograph
Author :
Lee, Alison L. ; Tahmoush, Albert J. ; Jennings, J.Richard
Author_Institution :
Walter Reed Army Institute of Research, Washington, D.C. 20012.
fDate :
5/1/1975 12:00:00 AM
Abstract :
A commercial transducer combining a gallium arsenide infrared emitting diode and silicon phototransistor has been adapted for use as a photoelectric plethysmograph. This device is superior to the tungsten lamp-photoconductive cell plethysmograph generally available.
Keywords :
Blood; Circuits; Gallium arsenide; Photoconductivity; Photodetectors; Phototransistors; Silicon; Transducers; Tungsten; Voltage; Blood Circulation; Electronics, Medical; Humans; Oxygen; Plethysmography; Transducers; Transistors;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.1975.324491
