TweetThevenin’s Theorem 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 [...]
Tags: Thevenin, Thevenin Equivalent, thevenin equivalent circuit, thevenin equivalents, Thevenins Equivalent
TweetAs 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
TweetCurrent Dividers Current dividers are the inverse of voltage dividers. Voltage dividers work with series circuits where current remains constant; any parallel components must be combined before the voltage divider equation works. In contrast, current dividers work with parallel circuits where the voltage is the same across all components and any series components must be [...]
Tags: Current divider, current divider circuit, Current Divider rule, current dividers, current voltage divider
Tweet What is Ohm’s Law? Ohm’s law defines the relationship between voltage, current, and resistance by the equation below. The second equation better represents voltage as the difference between two electric potentials. Note that V1 and V2 are voltages measured with respect to ground and V is the voltage potential measured between them. The equation [...]
Tags: Ohm's Law, Using Ohms Law, V=IR
Posted by Jeff on Jul 23, 2009 in
Circuit Theory
TweetHere I will show you how to calculate the different currents in each loop of the figure below using the mesh current method. This is my favorite approach to a problem like this one: 1) Identify meshes in a planar circuit. 2) Identify currents unknown. 3) Write KVL for each mesh. 4) Simplify and Solve. [...]
Tags: Mesh, Mesh Current, Mesh Current Analysis, Mesh Current Method, Mesh Currents
