How are current and voltage related to torque and speed of a …
Sep 3, 2012 · A DC motor can be approximated as a circuit with a resistor, and voltage back-emf source. The resistor models the intrinsic resistance of the motor windings. The back-emf …
What exactly is voltage? - Electrical Engineering Stack Exchange
What is voltage? It's a stack of invisible membranes which fill the space between charged capacitor plates. Voltage is the pattern of concentric onion-layers which surround any charged …
What, exactly, is voltage? - Electrical Engineering Stack Exchange
Aug 22, 2020 · We say that voltage is like pressure, or like gravitational potential energy, because we're trying to draw an analogy to something that you can see or feel (because you can drop a …
What is "forward" and "reverse" voltage when working with diodes?
Mar 3, 2011 · The reverse voltage is the voltage drop across the diode if the voltage at the cathode is more positive than the voltage at the anode (if you connect + to the cathode). This …
How to calculate voltage drop over and power loss in wires
Now, we want to know what the voltage drop over one piece of wire is using \$\text{V}=\text{I}\cdot{}\text{R}\$: \$\text{V}=0.01961\cdot2.5=0.049025V=49.025\text{mV}\$ …
How to reduce DC voltage using resistors?
Feb 8, 2023 · A simple solution myself is a voltage follower connected to the output of the two resistors, this will provide a high input impedance and therefore: the output voltage will be …
Reducing voltage with resistors - Electrical Engineering Stack …
Sep 2, 2014 · U1 is the voltage you want to "divide", and U2 is the voltage you want to use. Knowing these voltage you can calculate the resistors. Just pick a resistor for R1 and calculate …
operational amplifier - Op-amp voltage follower basic …
Nov 9, 2024 · A voltage follower is a circuit with negative feedback that has two variations: non-inverting and inverting. If the inputs of an op-amp are swapped, positive feedback circuits are …
Practical example of controlled voltage and current sources
Dec 2, 2023 · An interesting fact is that we use the compensating voltage -VR as an output voltage. simulate this circuit. Op-amp I-to-V converter with negative feedback: As above, we …
Why does voltage drop in a series circuit but current stays the …
May 23, 2021 · Voltage is the difference between the electric field strength of 2 points and how much work can be done by a charged particle as it is moved by those fields between those 2 …