Rank: Member
Groups: Member
Joined: 8/29/2009(UTC) Posts: 21 Location: bangalore
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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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Rank: Advanced Member
Groups: Member
Joined: 5/4/2011(UTC) Posts: 34 Location: Southbury, CT, USA
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Are you measuring the CCS and Shunt currents at 500 ma, i.e. 0.5V across the 1 ohm resistors? SMathews Edited by user Wednesday, July 20, 2011 5:42:38 AM(UTC)
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Rank: Member
Groups: Member
Joined: 8/29/2009(UTC) Posts: 21 Location: bangalore
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Yes the voltage is also stuck at 2.8 led's also dont turn on Edited by user Wednesday, July 20, 2011 7:11:22 PM(UTC)
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Rank: Advanced Member
Groups: Member
Joined: 5/4/2011(UTC) Posts: 34 Location: Southbury, CT, USA
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Did the LEDs turn on before the transistor swap?
Post a few pictures.
SMathews
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Rank: Member
Groups: Member
Joined: 8/29/2009(UTC) Posts: 21 Location: bangalore
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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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