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Calculating Electron and Hole Concentrations in a p-n Junction

Posted by Luke on Mar 24, 2010 in Basic Electrical Engineering Concepts, Electronic Materials / Chemistry, Electronics, Physics

TweetCalculating hole and electron concentrations Sometimes it can be complicated understanding and calculating hole and electron concentrations. My intent in this article is to briefly, but thoroughly describe what the variables used in these calculations mean and how to use them. To begin I will introduce our variables concentration of free electrons (donors) concentration of [...]

Tags: acceptor, atom, calculate, concentration, donor, electron, hole, junction, n, n-p, n-type, p, p-n, p-type

Amplifiers – Part I

Posted by Jeff on Mar 17, 2010 in Basic Electrical Engineering Concepts, Biomedical Engineering, Circuit Theory, Electronics

TweetThis post is about amplifiers, how they work, and common applications. I will cover several operational amplifier configurations, and situations where each might be useful. This is part I of II for general discussion about amplifiers. Enjoy! Definition of an amplifier Definition (for Bioinstrumentation): Circuit that makes a small signal, usually voltage but occasionally current [...]

Tags: Amp, Amplifier Saturation, Amplifier Schematic, Amplifiers, Bias Current, CMRR, Common-Mode, DC offset, Diff Amp, Difference Amp, Differential Amp, Frequency Dependance, Gain, Input Impedance, Instrumentation Amp, Operational Amplifier, Output Impedance, Saturation, Wheatstone Bridge

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Calculating Electron and Hole Concentrations in a p-n Junction

Amplifiers – Part I

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