The SS stuff is haunted by the two gremlins same as always. Low impedances
(which make cooking up the I/O and combiners hard to do efficiently) and
moving the massive heat generated out fast enough. In a sense, the limiting
factor with SS adoption is a materials and build related issue, not so much
a semiconductor issue.
73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie
-----Original Message-----
From: peter chadwick
Sent: Thursday, September 12, 2013 10:21 AM
To: Roger (K8RI) ; amps@contesting.com
Subject: Re: [Amps] design approach for QRO solid state
Adding to Roger's comment on diffusion and temperature, this is why old
tunnel diodes are often u/s. Tunnel diodes use very high doping levels, and
some diffusion occurs over time even at room temperature. This is why a lot
of 1970s 'scopes aren't triggering well - if at all.
73
Peter G3RZP
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