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old_weather1967
06-07-2009, 17:35
Ηi again
I make a electronic circuit with 2N2222 tranzistor, and CA3140E microcircuit, i drive to relay with better accurace,with trimmer i tuning at how voltage i want to drive the relay.
I have some photos
All it is the same with other project ,except the relay circuit
Fan turn the day with full speed ,and the night at half speed

http://i82.servimg.com/u/f82/11/22/64/62/solarc12.gif (http://www.servimg.com/image_preview.php?i=890&u=11226462)

http://i82.servimg.com/u/f82/11/22/64/62/reelay10.jpg (http://www.servimg.com/image_preview.php?i=879&u=11226462)

http://i82.servimg.com/u/f82/11/22/64/62/relayc10.jpg (http://www.servimg.com/image_preview.php?i=880&u=11226462)


http://i82.servimg.com/u/f82/11/22/64/62/relayc12.jpg (http://www.servimg.com/image_preview.php?i=882&u=11226462)


http://i82.servimg.com/u/f82/11/22/64/62/relayc14.jpg (http://www.servimg.com/image_preview.php?i=888&u=11226462)


http://i82.servimg.com/u/f82/11/22/64/62/relayc15.jpg (http://www.servimg.com/image_preview.php?i=891&u=11226462)



http://i82.servimg.com/u/f82/11/22/64/62/relayc16.jpg (http://www.servimg.com/image_preview.php?i=892&u=11226462)

Gigi600
07-07-2009, 17:47
Hello Dimitris
Excellent work.
An application
The resistor (R4) 1 Watt is not cheap? I put at least 3 watts

Gigi :ciauz1