[time-nuts] HP 117/10509a

[Don Latham]

You need the gate volt-drain current curves to match the nuvistor
grid-plate characteristic and the fet breakdown voltage has of course
got to be high enough. I've gotten nuvistors at pretty reasonable cost
on ebay...
Don

Ron Ward
> Hi:
> I have been thinking of doing the same thing! I have some 2N301 dual
> gate MOSFET's that I want to use. I would rather consider successful
> conversions done by others rather than reinvent the wheel.
> Ron
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Merchison Burke
> Sent: Wednesday, July 04, 2012 8:19 PM
> To: time-nuts at febo.com
> Subject: [time-nuts] HP 117/10509a
>
> Hello,
>
> Has anyone successfully replaces the Nuvistors in the 117 and the 10509a
>
> with FETs. I would like to replace them with inexpensive FETs instead of
>
> buying the expensive Nunistors.
>
> Thanks for all help,
> Merchison
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-- 
"Neither the voice of authority nor the weight of reason and argument
are as significant as experiment, for thence comes quiet to the mind."
R. Bacon
"If you don't know what it is, don't poke it."
Ghost in the Shell


Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406-626-4304
www.lightningforensics.com
www.sixmilesystems.com