[Test-Equipment] Is there an electron tube (nuvistor) amplifiers for Tek 7000-series ?

[J. Forster]

I would doubt it. The last Tek scopes to use nuvistors were the 561 / 564 series
as I remember.  How about using a 7A13 Differential Comparator which is designed
to look at small signals and recover from big overloads gracefully.

-John

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Sakari Mattila wrote:

> There seems to be relatively new nuvistor front-end amplifiers in some
> Tektronics scopes. I use Tek 7704A scope sometimes in pulse circuits with
> mostly low-level signal with short high-voltage pulses in between. Haven't yet
> burned any amplifier, but I would feel safer with nuvistor front-end than
> FETs.