Calculate Voltage From Solar Cell - No Temperature/Apparatus Needed

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Discussion Overview

The discussion centers around how to calculate the voltage produced by a solar cell, specifically addressing whether temperature readings or additional apparatus are necessary for this calculation. The scope includes theoretical considerations and practical applications related to solar cell performance.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • Some participants inquire about the procedure for calculating voltage from a solar cell and whether temperature readings or other equipment are required.
  • One participant suggests that the voltage is primarily a function of current, temperature, and the number of cells in series, referencing the I-V curve provided in the datasheet for a single cell at a specific temperature.
  • Another participant proposes a rough estimate of about 0.6 volts per cell, indicating that one can count the cells in a solar panel and multiply by this value, while cautioning about the implications of parallel configurations on voltage.
  • It is noted that the voltage output may vary slightly with temperature and is applicable only in direct sunlight.

Areas of Agreement / Disagreement

Participants express differing views on the necessity of temperature readings and the role of apparatus in calculating voltage, indicating that multiple competing views remain without a consensus.

Contextual Notes

Limitations include potential variability in voltage due to temperature and the specific conditions under which the solar cells operate, such as the need for direct sunlight.

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How to calculate the voltage produre by solar cell ? Need temperature reading or other apparatus ?
 
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It's mainly a function of current, temperature and the number of cells in series. The datasheet should provide you with the characteristic I-V curve for a single cell at a given temperature.
 
You can assume about 0.6 volts per cell, so you can count up the cells just by looking at the solar panel and multiply by 0.6.

Watch out for cells in parallel, though. If you have 3 parallel strings of cells, the voltage will only be the same as for one of them.

This will vary slightly with temperature and also the output only applies in direct sunlight.
 

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