ANALYSIS OF BIOMEDICAL PHYSICS IN PULSE OXIMETERS: PRINCIPLES OF PHOTOPLETHYSMOGRAPHY, PHOTOELECTRIC SENSORS, AND SIGNAL PROCESSING. PULSE — Journal of Energy, Informatics & Biomedicine, [S. l.], v. 2, n. 1, p. 21–26, 2026. DOI: 10.30659/pulse-jeib.v2.i1.a8. Disponível em: https://pulsejeib.edu.eu.org/jeibm/article/view/8. Acesso em: 3 oct. 2026.