Field Effect Transistor Question

[Ross J Lahlum]

Jim,

I don't think there are many high-voltage JFETs available, but if a
MOSFET is OK, there are many HV devices available.  Check out IR,
Siliconix (Vishay?), etc. Something like an IRF720 might work.

Regards,
Ross

On Sun, 28 Oct 2001 21:03:46 EST "James W. Miller" <JimWMiller at AOL.COM>
writes:
> Hi Folks,
>
> Are there any Field Effect Transistor experts out there in Boat
> Anchor Land?
>
> I'm looking for a high voltage J FET. I''ve just constructed a
> common drain
> buffer using a 2N3819 JFET which provides a High Z interface between
> my
> frequency counter (low Z in) and old Boat Anchor rigs.
>
> It works fine, however, the problem is that I want to find a high
> voltage FET
> so that it can accept inputs of  at least +/- 100 volts.
>
> Can anyone suggest the number of high voltage JFET that is
> available.  It
> should have a "Gate-Source Breakdown Voltage" of 100 volts or more.
>
> Thanks in advance.
> 73,
> Jim, WA2UMP
>
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