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Old 21st April 2013, 12:42 PM   #191
AndrewT is offline AndrewT  Scotland
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measure the voltage across it (Vds)
measure the current through it (Id).
multiply the results to get the power (Pq).
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Old 22nd April 2013, 04:59 PM   #192
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I plan to build it. I have not yet built it, so I don't have what to measure.

Last edited by george_ct; 22nd April 2013 at 05:03 PM.
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Old 22nd April 2013, 07:57 PM   #193
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Quote:
Originally Posted by georgesco View Post
I plan to build it. I have not yet built it, so I don't have what to measure.
Judging from the voltages on the schematic the idle dissipation is under 250mW so a heat sink is not required.
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