Wiring Solar Cells

Discussion in 'The Projects Forum' started by Kefka666, May 2, 2008.

  1. Kefka666

    Thread Starter Active Member

    Mar 4, 2008
    38
    1
    I want to wire solar cells together to achieve an appropriate voltage (6-8V) and current (375-500mA). I'm still trying to understand what happens if I wire two solar cells in parallel or series that have different V and I.

    For example:

    Would an (8V, 250mA) solar cell wired in parallel to a (1V, 200mA) cell result in a combined [8V, 450mA] output?

    Likewise would a (6V, 100mA) solar cell wired in series to a parallel connection or two (1V, 200mA) solar cells result in a combined [6V, 500mA] output?

    If anyone could help answer these questions it would help me understand the concept or wiring power sources in parallel or series connections.
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    You wouldn't want either scenario; it wouldn't work. They would "fight" each other.

    If they have the same voltage output, you can wire them in parallel to get a higher current output.

    If they have the same current output, you can wire them in series to output a higher voltage.

    It's much easier to use matching cells.

    If that isn't an option, then you'll have to mix and match until you come up with a series/parallel combination of cells that are matched in voltage or current, before you can combine them with other cells.
     
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