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

voltage inverter
Auto light controller
Wide-range-rf-power-meter
Light Detector
Light dimmer
pcb How to use the same switch to control LED and vary resistance
Simple RF Detector For 2M
Schematics Touch Activated Alarm
The Bean-Counter AM Transmitter
5 volts high current power supply using 7805 voltage regulator
136 kHz QRSS receiver
OSCILLOSCOPE COUNTER PREAMPLIFIER
Isolated send receive ring circuit diagram XTR105 RCV420



Top