Electronics > Projects, Designs, and Technical Stuff

variable power supply circuit

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xavier60:
Start with about 1°C/W for the TO-247's  thermal pad.

EDIT: Or is it a TO-220 part? which will be much worse.

aneesh:
it is t0 220 with large heatsink . plz refe the above circuit

xavier60:
One way to calculate the power dissipated by the MOSFET, measure the voltage between Drain and Source, then multiply it by the current. 

aneesh:
drop is something nearly 15v and 0.5A

xavier60:

--- Quote from: aneesh on June 17, 2020, 10:53:50 am ---drop is something nearly 15v and 0.5A

--- End quote ---


15 x 0.5 = 7.5W
What information do you have about the heatsink? 

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