VTVM Probes

Ed Richards k6uuz at JUNO.COM
Fri Feb 2 16:07:57 EST 2001


The only draw-back is the full capacity of the cable is across the
circuit being tested. The 1 meg resistor reduces the loading effect.
Ed

On Fri, 2 Feb 2001 09:31:35 -0500 Randy Kaeding <rkaeding at HEATHKIT.COM>
writes:
> Actually, there is a simple (reversible) mod that can be made on the
> Function switch so that the resistor is switched automatically. With
> this
> mod, you can use any straight-through probe.
>
> There are those "experts" out there that will tell you that the
> resistor
> needs to be right at the probe for isolation purposes, but most of
> the VTVMs
> in the Service Department were modified this way, and we never had a
> problem.
>
> Randy, K8TMK
> "One of the Hams (still) at Heathkit"

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