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 models the voltage generated by the moving electric current in the magnetic field (basically a DC electric motor can function as a generator).
voltage - Are Vcc and Vin the same thing for logic gates?
Oct 16, 2024 · If the voltage source is "ideal" (with zero internal resistance), then its entire voltage of 10 V is applied to the load. Visualized load To visualize the current through load without cluttering the schematic, I have replaced the load resistor RL with an ammeter having the same internal resistance of 10 kΩ.
Where Does the Short-Circuit Voltage Drop to 0V? What Happens …
Oct 12, 2024 · The voltage across resistor R1 is always zero, regardless of the value of R1. This answers your question. Finally, some remarks: I analyzed the full three-resistor circuit for completeness. But the resistance of voltmeters are large, R1 is ideally infinite, the voltage across R1 and R2 are considered the same.
voltage - What does 3V3 or 1V8 mean? - Electrical Engineering …
character in net names (Well, I think it was "." chars, I removed them and it fixed the problem). Using "3v3" or "1v8" is an easy way to clearly describe the voltage while restricting net names to exclusively alphanumeric characters. \$\endgroup\$ –
transmission line - What is the voltage angle? - Electrical …
Jul 21, 2022 · In EE, if we have a steady-state sinusoidal signal (voltage or current, typically) with a time dependence $$ v(t) = V_0\cos(\omega t + \phi)$$
voltage - What does E mean in this instance? - Electrical …
\$\begingroup\$ Voltage is technically electomotive force in the particular units of Volts. Since Volts is so overwhelmingly used, we usually get lazy and say "Voltage" even when we don't really care about the units and should say "electromotive force", sometimes abbreviated EMF.
RS485 voltage levels - Electrical Engineering Stack Exchange
Mar 31, 2014 · the voltage difference between D+ and ground, and D- and ground must be in the range acceptable by the receiver. If they are not, you have a ground potential difference problem. To solve it, you can either reduce the difference, or find a receiver that can tolerate a higher difference. The voltage levels for RS485, from The RS485 design guid:
What is the correct supply voltage for LEDs?
Apr 6, 2021 · LEDs are nonlinear devices -- their current vs. voltage curve is exponential with voltage. In practical terms, it means that essentially no current flows at low voltages, and then the current very rapidly rises. In the case of your LED, that "low voltage" is around 1.6V. If you look at the datasheet, figure 2, you'll see this.
How do I explain current and voltage to a lay man?
Mar 18, 2015 · Just like water needs pressure to force it through a hose, electrical current needs some force to make it flow. A volt is the measure of electric pressure. Voltage is usually supplied by a battery or a generator and current is electricity in motion. It measures the amount of electrons that can flow through a material like a conductor.
theory - Where does U for voltage come from? - Electrical …
Both of voltage description "U" and "V" are proper, however it must be mentioned that in European notation "U" describes voltage source while "V" describes rather voltage potential. It means that U = V1 - V1 (voltage is a difference between voltage potentials). I agree that in IEEE and American standards voltage is described by "V" letter.