Ravi,
?
Do not go above 28V unless you have lots of spares.
?
But so you know I've seen at 20V 25W during testing and for fun
and attempted destruction 28V where I got 40W easily.? ?
NOTE: you need about 4X the heatsink area or more to stay
up there.? ?Adding a copper heat spreader helps.? at 24V when
no signal TX 6W of heat (due to bias current).? ?That high the
BS170s are working at fairly high voltage.
?
--
Allison
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Please use the forum, offline and private will go to bit bucket.