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|17th August 2013, 08:49 PM||#121|
Temperature controlled curve tracing
wanted to measure my transistors at operating temperature of my class-A amp. I found a way to do this and thought I share it here. May it be useful for others
Pictures speak for themselves....
- An aluminum strip, and transistor (isolated) attached to it.
- Digital thermometer attached to aluminum strip (probe close to transistor)
- electric iron (or similar)
What needs to be determined:
I noticed from other temp measurements in real amps- where the transistors are heating up the heat sinks: When heat sinks have 50 Degree Celsius, the transistors can have 70-80 Degrees Celsius.
If you are heating the heat sinks, to simulate such temperatures of transistors, you need to take that into account.
Last edited by dsdjoy; 17th August 2013 at 09:11 PM.
|18th August 2013, 12:57 AM||#123|
Join Date: Jun 2004
I suggest use PTC heating a small aluminum,
The PTC is constant temperature. it can be detached from the 'USB Tea Coffee Cup Warmer Heating Pad'.
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