An Introduction to Biomedical Instrumentation

Foreword1 Instrument Construction Seminar Human Engineering in Instrument Design Physical Construction Heat Sinks Interconnection of Instruments Soldering Failures in Equipment Practical Assembly of Leads, Assembly of Components on Insulating Board and Printed Circuit Sheet Metal Working2 Current, Voltage, and Resistance Seminar Definitions Resistors, Noise in Resistors, Combinations of Resistors Power Sources for Biomedical Equipment Practical Ohm's Law, Varying e.m.f. and Resistance Power Dissipation3 Meters Seminar Basic Moving-Coil Meter; Use as Ammeter, Voltmeter, Ohmmeter Multimeters Insertion Errors Meter Accuracy Practical Construction of Simple Multimeter Calibration and Testing Resistors in Series and Parallel4 The Potentiometer and Wheatstone Bridge Seminar Potentiometer Thermocouple Thermometry Thermoelectric Cooling Elements Wheatstone Bridge Resistance Thermometry Thermistor Thermometer Practical5 Alternating Currents Seminar Nature of Alternating e.m.f.; Method of Generation Peak and r.m.s. Voltages and Currents Power Measurement of Alternating Voltage and Current Practical Output of Simple a.c. Generator Rectification Calibration of a.c. Meter6 Capacitance Seminar Constant Voltage and Constant Current Sources Storage of Energy in a Capacitor; Capacitance Permittivity of Free Space; Electric Field Dielectric Constant and Dielectric Strength Energy Stored Commercial Capacitors Charge and Discharge of Capacitor-Resistor Combination Leakage Testers Alternating Voltage Applied to a Capacitor, and to a Capacitor and Resistor in Series; Impedance Measurement of Capacitance Practical Plot of Charge and Discharge Curve of Capacitor-Resistor Combination; Estimation of Time Constant A.C.