Here Joule losses will be induced in a transistor used in resistive mode
Voltmeter on the MOSFET and ammeter in series to calculate the power dissipated
The ambient temperature (laser measurement) is 31 ° C
The transistor dissipates 4.1 V * 1.6 A # 7 Watts
50 ° C. is already measured on the transistor
It has risen to 60 ° C
69 ° C
I stop at 83 ° C after only a few seconds!
I will use a small aluminum heatsink (radiator)
Air at 28 ° C, heatsink at 29 ° C
30.7 ° C very slight increase (P # 7 Watts again)
At the end of the same time, we are barely at 32 ° C!
After one minute, 35 ° C, this radiator dissipates our 6 W by increasing only 7 ° C!