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Sunday, 5 January 2014

STP-SP-89897766-CHG

Created in SEP 2009
It was a solar power supply that has a build in regulator 7809 and 7805. This was actually created to charge standard 9v battery and mobile.
The reason  for using 7809 and 7805 was to use regulated voltage. Such voltage is good for the sensitive batteries and mobile.
It was having a 5W back solar cell purchased from lahore.
It was sold in DEC 2009.
Later STP realized  that it has no use for us. So, they posted an ad on a website and contacted buyer and sold it.

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