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boinger		#1 Posted : 14 years ago
Rank: Member Groups: Member Joined: 8/29/2009(UTC) Posts: 21 Location: bangalore		Cant get the voltage on r8 below .5v and cant get the shunt voltage to be .05v I had accidently swapped qn1 and qp1 could that have damaged something ?
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usmat		#2 Posted : 14 years ago
Rank: Advanced Member Groups: Member Joined: 5/4/2011(UTC) Posts: 34 Location: Southbury, CT, USA		Are you measuring the CCS and Shunt currents at 500 ma, i.e. 0.5V across the 1 ohm resistors? SMathews Edited by user 14 years ago  | Reason: Not specified
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boinger		#3 Posted : 14 years ago
Rank: Member Groups: Member Joined: 8/29/2009(UTC) Posts: 21 Location: bangalore		Yes the voltage is also stuck at 2.8 led's also dont turn on Edited by user 14 years ago  | Reason: Not specified
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usmat		#4 Posted : 14 years ago
Rank: Advanced Member Groups: Member Joined: 5/4/2011(UTC) Posts: 34 Location: Southbury, CT, USA		Did the LEDs turn on before the transistor swap? Post a few pictures. SMathews
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boinger		#5 Posted : 14 years ago
Rank: Member Groups: Member Joined: 8/29/2009(UTC) Posts: 21 Location: bangalore		Nope they did not, I swapped the leds now they are turning on but voltage is stuck at 7.28 I will take some pictures in the morning
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