
What exactly is voltage? - Electrical Engineering Stack Exchange
The total voltage you get from one out and back, even with a high temperature difference is pretty small. By putting many of these out and back combinations together, you can get a useful voltage. A single …
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 rock on …
How much voltage/current is "dangerous"? - Electrical Engineering …
Likewise, if the current and voltage are below a certain level, a person can--given enough time--safely absorb an arbitrarily large amount of electrical energy. Further, if voltage is sufficiently low, the …
How are current and voltage related to torque and speed of a …
Sep 3, 2012 · Voltage instead "regulates" how fast a motor can run: the maximum speed a motor can reach is the speed at which the motor generates a voltage (named "Counter-electromotive force") …
How to calculate voltage drop over and power loss in wires
How do I calculate the voltage drop over wires given a supply voltage and a current? How do I anticipate on voltage drop so that the final load has the correct supply voltage? What will be the power
How to reduce DC voltage using resistors?
Jul 10, 2013 · How would one go about using a 12 V DC power source to power something which needs 4.5 V DC using resistors? Is there a way to determine how much adding a resistor would drop the …
How does an ideal op amp amplify a voltage input when the voltage ...
Nov 1, 2019 · You only stated one of the two critical facts about an ideal op amp. The voltage difference between the inputs is zero, and the input currents are also zero. Therefore, you can apply Kirchhoff's …
Ohm's Law confusion -- can there be voltage without current?
Apr 24, 2015 · 0 Ohm's Law confusion — can there be voltage without current? Yes. The wall outlet has voltage all the time, but current only flows if the circuit is closed with something that has a resistance.
How important is the gate threshold voltage on a MOSFET?
Nov 12, 2020 · The spec sheet says the gate threshold voltage is between 2 V and 4 V. When controlling directly via the MCU, the voltage on the pin is 3.3 V. However, I have switched to a shift …
What is the difference between "reverse stand off voltage" and ...
What is the difference between "reverse stand off voltage" and "breakdown voltage" on a TVS? Ask Question Asked 13 years, 3 months ago Modified 2 years, 10 months ago