Solar Charging Circuit

March 2, 2009

This solar circuit is what I am going to use for my thesis. It charges ultra capacitors. While the voltage coming in to the capacitors is larger than the voltage they are holding, they absorb more electricity. If the voltage in the solar cells drops below the voltage already stored in the caps, the diode prevents it from flowing backward. The circuit uses a transistor to act as a voltage trigger. Based on the value of the resistor at its base, the voltage threshold can be adjusted. When the voltage coming in through the solar panels falls below the threshold, the circuit stops charging, and instead discharges from the caps through the LED.

solarcircuitblogsolarcircuitdiagram

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: