Sun-tracker


Posted on Dec 22, 2012

In solar cell array applications and solar instrumentation, it is desirable to monitor the approximate position of the sun to allow efficient automatic alignment. The Ll4Gllens can provide about 15° of accuracy in a simple level sensing circuit, and a full hemisphere can be monitored with about 150 phototransistors. The sun provides `` 80 mW/cm2 to the L14Gl when on the centerline. This will keep the output down to,; 0.5 V for f),; 7.5°. The sky provides `` 0.5 mW/cm2 to the Ll4G1 and will keep the output greater than 10 V when viewed.


Sun-tracker
Click here to download the full size of the above Circuit.

White douds viewed from above can lower this voltage to "" 5 Von some devices. This circuit can directly drive TTL logic by using the 5-V supply and changing the load resistor to 430 0. Different bright objects can also be located with the same type of circuitry simply by adjusting the resistor values to provide the desired sensitivity.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Lamp-life-extender
Headlight Flasher Circuit
KC2ZPLs Web Design and Electronic Home
Extensible Multiple Device Programmer 1
grid frequency
Battery Charger Display Using LT1639
Audio
ISO122P / 124 power supply has a three-port isolation amplifier circuit diagram
AD524J type thermocouple cold junction temperature compensation circuit
TV signal amplifying circuit diagram conversion
Zero volt switching circuit diagrams
BT9404 type excitation switch control circuit



Top