The 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
This 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! Amplifiers Definition (for Bioinstrumentation): Circuit that makes a small signal, usually voltage but occasionally current or power, big [...]
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
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 denotes Laplace and denotes Inverse Laplace: [...]
Tags: laplace, laplace method, laplace table, laplace transform, laplace transform examples, laplace transforms, table of laplace transforms
Thevenin’s theorem states that a two terminal circuit containing voltage sources, current sources, and resistors can be modeled as a voltage source in series with a resistor. The benefit of using a Thevenin equivalent is that it makes analyzing how a circuit interacts with other circuits a much simpler process. Consider the circuit below. Suppose [...]
Tags: Thevenin, Thevenin Equivalent, thevenin equivalent circuit, thevenin equivalents, Thevenins Equivalent
As its name implies, the node voltage method is used to find a node’s voltage with respect to ground. While a voltage divider can be used for the same purpose, the primary purpose of a voltage divider is to find voltage drops across resistances rather than with respect to ground. One disadvantage of using a [...]
Tags: Node Voltage, Node Voltage Analysis, Node Voltage Method, The Node Voltage Method
