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I have just assembled it I get the 5.5V on the output, but the trimmer runs out of turns at about 0.247 V. Any ideas? the secondary gives me 9.8V Edited by user Saturday, April 3, 2010 6:23:38 AM(UTC)
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Rank: Administration
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Rank: Advanced Member
Groups: Member
Joined: 9/1/2009(UTC)
Posts: 31
Location: Greece
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Rank: Advanced Member
Groups: Member
Joined: 9/1/2009(UTC)
Posts: 31
Location: Greece
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I short circuited R6 and I managed to get the range needed to reach 350mV.
yet QP1 gets substantially hotter than QN1.
In fact QN1 seems cold.
Is this normal?
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Rank: Administration
Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN
Thanks: 25 times
Was thanked: 89 time(s) in 83 post(s)
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Yes this can be quite normal depending on what load you are driving. If you have no load than the shunt transistor is dissipating a lot of power.
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