HOMEMADE SOLAR PANEL
A solar panel is a photovoltaic cell where light energy is
transformed into electrical energy. PROJECT
Here I’m showing how to make one
simple solar panel using unused break down transistor. The chosen transistor is
NPN metallic TO-3 package. The below picture shows its image.
Remove the transistor metallic TO-3
package top cover
Test
The small silicon chip inside the able
to produce photovolatge when exposed to sunlight and in the cell the emitter
becomes the positive terminal and the collector becomes the negative terminal.
Ok we get 286.6mV one transistor..
The cell produced open circuit
voltage of 0.1 - 0.5 volts which is normal but it produced closed circuit
current of only 5ma which is too little to be used in any applications. To
light a bright white LED we need minimum 10-15mA current and the panel produced
only 0.2mA which is not enough.
250mV x 10 = 2500mV need 10 transistor in series .
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