[Amps] Pin Diode - design needed

Dan Simmonds dan at kk3an.com
Thu Jan 17 19:19:57 EST 2013

OK Dave. I was basing the theory about doing this on the fact that 
Dishtronix uses pin diode switching (as an option) in their HF amplifier.


On 16 January 2013 04:28, Dan Simmonds <dan at kk3an.com> wrote:
 > If anyone could help in providing a pin diode design in an amplifier T/R
 > switching circuit, please contact me direct & off-list.
 > I'm in need of a DPDT, able to switch approximately 10-15 KV. Something
 > similar (or heavier) to the Gigavac G41, 12VDC model.
 > Thanks, Dan  KK3AN

I don't think you want to use a PIN diode. A normal PIN diode switch
has a lower frequency limit of around 10 MHz, as you need to rely on
the fact the diode acts as a resitor to RF, not as a diode. At low
frequencies, it will act as a diode, and that is undesirable for RF

I can't see any reason to use a PIN diode in DC switching.


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