Grn_n_TX
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- Sep 10, 2007
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I've built DD regulator circuit exactly as the diagram shows. GP diode in Axiz housing-OK.
I'm using 4 AA alkaline batteries for 6 volts input to the circuit. I tried two CR123 3v lithiums in series for 6v source also.
I've tried changing the 10 ohm resistor to a 5 and then none at all.
Even with the resistor removed and using the the trim pot the most I can get out of the circuit is 2.85 volts and 120mA current draw from the LD.
Any suggestions on what the heck is up?
My 1st guess would be the LM-317 is defective?
Thanks for the help in advance!
I'm using 4 AA alkaline batteries for 6 volts input to the circuit. I tried two CR123 3v lithiums in series for 6v source also.
I've tried changing the 10 ohm resistor to a 5 and then none at all.
Even with the resistor removed and using the the trim pot the most I can get out of the circuit is 2.85 volts and 120mA current draw from the LD.
Any suggestions on what the heck is up?
My 1st guess would be the LM-317 is defective?
Thanks for the help in advance!