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 out and back is called a thermocouple, and can be used to sense temperature Many together is a thermocouple generator Yes, those actually
What, exactly, is voltage? - Electrical Engineering Stack Exchange 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 your toe, or feel the pressure in a balloon when you blow it up) What voltage is gets abstract (hence the analogies)
What is forward and reverse voltage when working with diodes? 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 is usually much higher than the forward voltage As with forward voltage, a current will flow if the connected voltage exceeds this value This is called a "breakdown"
How are current and voltage related to torque and speed of a brushless . . . 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") which is equal to the voltage it receives from battery (disregarding power losses and frictions for simplicity)
How much voltage current is dangerous? - Electrical Engineering Stack . . . 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 amount of current that can flow as a consequence of such voltage will be too low to cause harm
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? 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 voltage?
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