[volt-nuts] HP-419 and Fluke 845 Modifications

Ludger.Lenzen at gmx.de Ludger.Lenzen at gmx.de
Sun Jun 21 15:09:57 EDT 2015

Hi Randy,

I would be happy to go on with the modification (for the HP 419A).
Will also rout a PCB - plan to use EAGLE (V6) or maybe Altium Designer 14 (not yet used to).

Any information (ideas, sketches, notes, files...) is highly welcome.

I don't have an account for upload either, thus simply send to my private mail address: Ludger.Lenzen at gmx.de

For sure it will no fast-finished project, as my wrokload is high also. But promise to keep you tuned on the progress via your private mail: randyevans2688 at gmail.com

Ludger (PeLuLe)

Gesendet: Sonntag, 21. Juni 2015 um 05:21 Uhr
Von: "Randy Evans" <randyevans2688 at gmail.com>
An: "Discussion of precise voltage measurement" <volt-nuts at febo.com>
Cc: randyevans2 at gmail.com
Betreff: Re: [volt-nuts] HP-419 and Fluke 845 Modifications

I have largely finished the design but it's designed to support the HP-419A
and Fluke 845A, with an isolation circuit for the HP-419A. Unfortunatley,
I have not had time to finish the implementation (PCB design and build) due
to a heavy work scdhedule over the last year, and its not getting any
better in the near term. I am more than willing to share the design with
you or anyone else that wants it. I can send a set of hand-drawn
schematics of the circuits to anyone who wnats - just send me an e-mail (I
don't have a web site to host the data - I should get one). I have a lot
of suppprting documentation such as LTSpice simulations, technical
articles, etc. also. I can anwer any questions anyone else has on the
design if needed.


On Fri, Jun 19, 2015 at 1:17 PM, <Ludger.Lenzen at gmx.de> wrote:

> Hi Randy, how is the modification of the HP419A ongoing?
> Still interrested and open to help/support.
> BR
> PeLuLe
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