On 16 January 2013 04:28, Dan Simmonds <dan@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
use.
I can't see any reason to use a PIN diode in DC switching.
Dave
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