>Does anybody know what the downsides would be
>of placing a pair of PIN diodes in parallel to increase
>the power handling capability of the circuit. My switch
>handles 800watts, but gets hot (120C on the case) and
>I want to take this design to higher power levels. The
>Rfb and series L would all be reduced, but the junction C
>is going to be doubled.
Hi George,
Paralleling PIN diodes is a fine way to increase the power handling of a
circuit. I don't see any problems other than the fact that as you point
out, junction C is increased. However, that may be pretty minimal as it
is and it might not affect operation that much. You'll have less loss
since you are reducing your resistance. I and a couple of PIN diode
experts have recommended this to commercial designers who were working on
portable SMR radios. We were suggesting going to using 2 plastic diodes
instead of one expensive ceramic MELF type PIN diode. I don't know why
it wouldn't work for you.
73,
Jon
KE9NA
--------------------------------------------------------------------------
The Second Amendment is NOT about duck hunting!
Jon Ogden
jono@enteract.com
www.qsl.net/ke9na
"A life lived in fear is a life half lived."
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