March 2012
Intermediate to advanced
578 pages
17h 56m
English
book
Analysis and Application of Analog Electronic Circuits to Biomedical Instrumentation, 2nd Edition
by Robert B. Northrop
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12 Power Amplifiers and Their Applications in Biomedicine
12.1 INTRODUCTION
A power amplifier (PA) is intended to deliver electrical energy, generally at a rate of over 0.5 W, to a load. The electric energy can be DC or AC. AC PAs can operate from subsonic frequencies, through the audio- and video-frequency ranges, up through UHF and SHF radio frequencies. The loads that PAs drive can be heaters or thermoelectric coolers, DC servomotors and other motion-generating devices, LEDs, laser diodes (LADs), loudspeakers, piezoelectric ultrasound transducers, and antennas, to name a few.
In the analysis and design of PAs, it is necessary to consider not ...
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