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Solar panels and EMP

Discussion in 'Electronic Design' started by Yzordderrex, Dec 31, 2012.

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  1. Yzordderrex

    Yzordderrex Guest

    Are PV panels suceptable to EMP?

    thanks
    Bob
    N9NEO
     
  2. John S

    John S Guest

    Not in New Hampshire. Not enough EM.
     
  3. Yzordderrex

    Yzordderrex Guest

    Good to hear! Panels will be in Warner, NH.
     
  4. John S

    John S Guest

    I know. I should have written *Especially* in Warner.
     
  5. Yzordderrex

    Yzordderrex Guest

    QRZ?
     
  6. Guest

  7. Guest

  8. tm

    tm Guest

  9. Guest

    You obviously know nothing about the physics of high altitude air bursts...
     
  10. John S

    John S Guest

    Bob, I was pulling you leg with my answers. Forgive me for that.

    The professionals here know what it is all about, but, I can agree with
    them about the susceptibility. You probably only need a few inches of
    wire attached to something to cause havoc in the case of an EMP.

    If you get one, please let us know and we will go underground :)

    QRU?

    -.-/-../...../-.--/..

    ..---/---/..../-.
     
  11. Owen Roberts

    Owen Roberts Guest

    EMP is mostly very strong HF, with a initial DC like surge.
    Depending on your distance to the blast, lots of things with a small
    capture area can/will survive. Things like two meter HTs and small
    cell phones are very hard to zap with EMP simulators in the far
    field.

    ARRL had a excellent multi-month write-up on this some time. Find all
    three parts of "Electromagnetic Pulse and the Radio Amateur."

    Doing things like wrapping boards in copper foil, and then setting
    them on a insulator inside of a large metal cabinet with bonded doors,
    does wonders.

    Steve
     
  12. tm

    tm Guest

    You obviously know nothing.
     
  13. tm

    tm Guest

    And how does it respond to a 50 k volts/meter electric field?
     
  14. John S

    John S Guest

    I have an Alps AP-KC40W/12V here with a label which says:

    Peak Power: 40W
    Maximum Power Voltage: 17.8
    Maximum Power Current: 2.3
    Open Circuit Voltage: 21.6
    Short Circuit Current: 2.5

    Conversion efficiency: 14-16%
    Cells per Module: 36
    Tolerance: +/- 10%

    Dimensions (mm); 651 x 526 x 35

    I measured what I think is the active area. I got 24.75 inches by 18.25
    inches.

    Measured capacitance:

    F C
    100Hz 215nF
    120Hz 206nF
    1000Hz 117nF
    10kHz 104nF

    I'm sure you are capable of scaling the capacitance vs area. If not,
    someone here can help.
     
  15. John S

    John S Guest

    Please show your reasoning and your calculations.
     
  16. John S

    John S Guest

  17. Owen Roberts

    Owen Roberts Guest

    The idea is two of everything. You wait till the shooting stops and
    switch to the "B"urried unit.

    I doubt ITO glass has good enough conductivity to be part of a EMF
    shield.

    Steve
     
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