I want to perform a heat dissipation test to make sure I do a good heatsink selection.
The point is to take one IRFP244 MOSFET (Aleph) and run it in order to have 25W of heat to dissipate (each MOSFET in the Aleph 2 must handle about this amount of power). Then check the temperature of various heatsinks.
Could anyone suggest me a test circuit to achieve this? I don't have my Aleph PSU yet, only a ±28Vdc (high current).
regards,
Gabriel
The point is to take one IRFP244 MOSFET (Aleph) and run it in order to have 25W of heat to dissipate (each MOSFET in the Aleph 2 must handle about this amount of power). Then check the temperature of various heatsinks.
Could anyone suggest me a test circuit to achieve this? I don't have my Aleph PSU yet, only a ±28Vdc (high current).
regards,
Gabriel
Dude man,
Why not just use resistors instead of going to the trouble of using active devices. Just change the voltage and voila, new trial.
Also. 6 devices on one sink at 25W each ain't the same as 1 device on 1/6 of a sink at 25W. Run a sim on the R-Theta site to see what I mean.... it's an, er, "educational experience", ya ya that's the ticket....
Why not just use resistors instead of going to the trouble of using active devices. Just change the voltage and voila, new trial.
Also. 6 devices on one sink at 25W each ain't the same as 1 device on 1/6 of a sink at 25W. Run a sim on the R-Theta site to see what I mean.... it's an, er, "educational experience", ya ya that's the ticket....
That's true that I could use one of those power resistors, but I wanted to run the real simulation. This would be a great test because I'm planning to use 12 smaller heatsinks for my casing design (see by yourself...11th post). Furthermore, using the exact same part that the real amp will make sure that I get the same results in the final design.
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