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Author Topic: solar robot machine Hardware and power Circuit  (Read 5217 times)
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« Reply #30 on: September 30, 2009, 09:22:50 AM »

3V 200 mA Solar Panel  Size - 80mmX65mm  = 5200 Sq. mm (52 Sq.cm ) Thickness - 3mm Resin Laminated   

4V 100 mA Solar Panel  Size - 54mmX65mm  = 3510 Sq. mm (35.10 Sq.cm) Thickness - 3mm Resin Laminated   

4V 200 mA Solar Panel Size - 105mmX65mm  = 6825 Sq. mm (68.25 Sq.cm) Thickness - 3mm Resin Laminated

You can use 2-3 solar cell in series/parallel  to get more voltage/ power (max dimension aloud in Solar Splash -150sq. cm)
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« Reply #31 on: November 06, 2009, 02:07:05 PM »

HElo Admin..

pls..giv me complete...guide line to the build the SOlar BOat for ...techfest's solar splash...



power circiut,,motors nedded..and the best..body construction..

than q..
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« Reply #32 on: November 24, 2009, 06:05:31 AM »


The all-transistor T3SE works much like a conventional SE: like the Tritium, it fires when the charging current drops below the minimum and after the circuit triggers, positive feedback is used to latch the circuit, resetting at a fixed voltage on the main cap.
How the T3SE works:
When the cap is discharged, the solar cell starts to charge the main cap mostly through the base - emitter junction of Q1 and some current passing through the 1K resistor with a maximum forward voltage drop of .6V. This causes the collector of Q1 to be saturated and the voltage on the collector will be close to the Q1 emitter voltage. This clamps the base emitter junction of Q2 and cuts off the Q2 collector current which would otherwise flow into the base of Q3.

When the voltage across the 1K resistor drops below .6V (i.e., 1 KOhms x 0.6 mA), Q1 comes out of saturation and ?unclamps? the Q2 base. This allows Q2 to turn on with base current supplied through the 220 K resistor. When Q2 turns on, it supplies base current to Q3 and the load (here a motor) is picked up.

------------------------------------------------------------------

The capacitor charges until the PNP transistor (here shown as a 2N3906, but you could also use a BC327) receives base current through the Zener and turns on. Then the NPN transistor (here shown as a 2N3904, but you could also use a BC337) turns on and the capacitor is discharged through the motor. As the NPN turns on the 2.2K resistor starts to supply base current to the PNP and the circuit snaps on. When the capacitor voltage drops below about 1V, the the PNP turns off, the NPN turns off and disconnects the motor from the capacitor which starts to charge up again.

Zener diode-mc4742, here the Zener starts clamping at v+ 0.7 volts, eventually triggering the PNP transistor, then triggering the NPN transistor, and will lock so long as the motor is moving.
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« Reply #33 on: December 01, 2009, 03:36:17 PM »

    
0.1F/5.5V Super Capacitor (1,00,000 uF/5.5V) Used in Solar Robotics 0.1 farad = 100000 microfarad Storage Capacitor for solar engine circuits storing...

1F/5.5V Super Capacitor (10,00,000 uF/5.5V) Used in Solar Robotics 1 farad = 1000000 microfarad Storage Capacitor for solar engine circuits storing...

http://onlinetps.com/shop/index.php?main_page=product_info&cPath=129_154&products_id=667
http://onlinetps.com/shop/index.php?main_page=product_info&cPath=129_154&products_id=668
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« Reply #34 on: December 02, 2009, 07:32:33 AM »

Thanks For Suggestions Cheesy  Here is some circuit
 
And very useful link
http://www.talkingelectronics.com.au/projects/Robots/Page1.html
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« Reply #35 on: December 16, 2009, 01:12:57 PM »

Hot tips
Note more higher value of capacitor -----> more discharge time I recommend to use 1F/5.5 v capacitor and add two 4v 200ma solar panels in parallel so that the to tal rating becomes 4v-400ma it will reduce charging time of capacitor

1f/5.5V super capacitor http://onlinetps.com/shop/index.php?main_page=product_info&cPath=95_96&products_id=667


Solar panel 4v-200ma http://onlinetps.com/shop/index.php?main_page=product_info&cPath=71_117&products_id=635
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« Reply #36 on: December 16, 2009, 01:56:54 PM »

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« Reply #37 on: July 26, 2010, 08:51:47 PM »

Something alike was discussed on the ask.com,i can give someone a link if anybody need it
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« Reply #38 on: July 31, 2010, 05:23:28 AM »


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