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  1. 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 …

  2. 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 …

  3. Choosing power supply, how to get the voltage and current ratings?

    Another issue with unregulated supplies is that the output voltage not only is a function of the input voltage, but will also fluctuate with how much current is being drawn from the supply. A …

  4. Why does a resistor reduce voltage if V=IR? [duplicate]

    According to Ohm's law, resistance varies directly with voltage You should read this the other way. Voltage varies directly with current. "R" is the constant of proportionality telling how much …

  5. Is it okay to use a power supply that provides slightly more …

    Any device will only draw as much current as it needs, so long as its power source can supply it. However, the laptop adapter's voltage is a full volt above the specified 18 V; this will cause …

  6. What is the voltage range of a standard headphone jack from a …

    What voltage range can I expect to see on the audio lines from the iPhone? I assume that turning the volume up on the phone will produce a large AC voltage, but how large does it go up to? I …

  7. 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 12 years, 11 months ago Modified 2 years, 5 months ago

  8. Why does reactive power affect voltage? - Electrical Engineering …

    Why does reactive power influence the voltage? Suppose you have a (weak) power system with a large reactive load. If you suddenly disconnect the load, you would experience a peak in the …

  9. 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 …

  10. What exactly does "common-mode" mean in the context of op …

    Most, or maybe all, topologies could end up outside of common mode voltage ranges at some specific time. What is important is to understand under what conditions will you be outside of …