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  1. #1
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    VOLTAGE/RESISTANCE

    Does anyone have a formula for voltage drop in relation to an increase in resistance? Some quick and dirty guide for simplifying field applications.
    thanks
    tl

  2. #2
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    Other than "OHMS LAW". ?

  3. #3
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    UGLY's guide.
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    How many times must one fix something before it is fixed?

  4. #4
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    If you have an iPhone or iPod Touch, get the app eformulas from the iTunes App Store.
    • Electricity makes refrigeration happen.
    • Refrigeration makes the HVAC psychrometric process happen.
    • HVAC pyschrometrics is what makes indoor human comfort happen...IF the ducts AND the building envelope cooperate.


    A building is NOT beautiful unless it is also comfortable.

  5. #5
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    E= IZ, I = E/Z, Z=E/I.
    ?

  6. #6
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    *

    but seriously, a guy i used to work with thought it was called holmes law



    .

  7. #7
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    Nov 2008
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    Quote Originally Posted by Airmechanical View Post
    but seriously, a guy i used to work with thought it was called holmes law
    .
    http://en.wikipedia.org/wiki/John_Holmes_(actor)
    Yes, it's not widely known, but the gentleman above did a lot of work in science (mostly hydraulics and fluid pressures).

  8. #8
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    Quote Originally Posted by WhoIsThat? View Post
    http://en.wikipedia.org/wiki/John_Holmes_(actor)
    Yes, it's not widely known, but the gentleman above did a lot of work in science (mostly hydraulics and fluid pressures).
    Only an engineer would know that.

  9. #9
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    Quote Originally Posted by WhoIsThat? View Post
    http://en.wikipedia.org/wiki/John_Holmes_(actor)
    Yes, it's not widely known, but the gentleman above did a lot of work in science (mostly hydraulics and fluid pressures).
    LOL Got that without having to use go see the link....I must be an 80's boy

  10. #10
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    Quote Originally Posted by WhoIsThat? View Post
    E= IZ, I = E/Z, Z=E/I.
    ?
    r=resistance z = impedance
    "Can't see it from my house"

  11. #11
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    It's good to know there are still people out there who can think and are smart.
    Thanks for the advise.
    So......
    Can I get an answer:

    Voltage in 115
    Resistance of the coil 32ohms

    Voltage out?

    thanx
    tl

  12. #12
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    Under load, .12 volts.
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  13. #13
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    Asheville, NC
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    "Voltage in 115
    Resistance of the coil 32ohms"

    Not sure what you are asking. Is the coil in parallel with the voltage or in series with a load? Is the voltage AC or DC? If the voltage is AC then you need to know the inductance of the coil and frequency of the voltage in order to calculate the inductive reactance of the coil (Xl =2 * PI * f * L). If it is in series (AC or DC) and you want to know the voltage drop you need to know the current drawn by the load. Voltage drop: E=IR (dc) or E=IX (ac).

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