TweetDC Biasing & AC Performance Analysis of BJT and FET Differential Amplifier Sub-circuits with Active Loads Any op-amp worth its salt has a differential amplifier at its front end, and you’re nobody if you can’t design one yourself. So, this article presents a general method for biasing and analyzing the performance characteristics of single-stage BJT [...]
Tags: ac analysis, ac performance analysis, active loads, bjt current mirror, bjt differential amplifier, BJTS, CMRR, common mode gain, common mode input impedance, common mode rejection ratio, current mirror, current mirrors, dc biasing, Diff Amps, Differential Amplifiers, differential input impedance, differential mode gain, FET, FET Differential Amplifiers, transconductance
TweetIntroduction to the convolution Amongst the concepts that cause the most confusion to electrical engineering students, the Convolution Integral stands as a repeat offender. As such, the point of this article is to explain what a convolution integral is, why engineers need it, and the math behind it. In essence, the “convolution” of two functions [...]
Tags: convolutio integral, convolution, convolution integrals, convolution table, convolution tables, impulse response, Linear Systems
TweetThe frequency response of a BJT or MOSFET can be found using nearly the exact same process, with the only variations being caused by a single resistor and simple naming conventions that differ between the two devices. Before we start let’s think a little bit about what we’re doing: Our goal is going to be [...]
Tags: Basic Electrical Engineering Concepts, BJT, Cadence, Electrical Engineering, Electrical Engineering Concepts, Engineer, MOSFET, Parallel Resistance Formula, pole, PSPICE, transistor
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
TweetWhat is the Laplace Transform method? The Laplace Transform is a method that simplifies integral and differential equations into algebraic equations. This practice is commonly used to solve for a function out of a differential equation, which otherwise may have been unsolvable or very difficult. The following integrals can be used to transform between where [...]
Tags: laplace, laplace method, laplace table, laplace transform, laplace transform examples, laplace transforms, table of laplace transforms
