[volt-nuts] Completion of LED Mod's for the Fluke 845AB & 845AR Null Meter.

[Todd Micallef]

Dallas,

Thanks for the information.

Would you be opposed to uploading it to the KO4BB website? I think Didier
could place it in a Fluke 845AB/AR folder. I could upload it with a copy of
the manuals and send him an email.

Todd

On Sun, Nov 23, 2014 at 10:02 PM, Dallas Smith <dosmith at outlook.com> wrote:

> How do I make my RTF attachment available to Volt-nuts? I do not trust
> cloud servers and the like.
>
> Dallas
>
>
> On 11/23/2014 1:29 PM, Dallas Smith wrote:
>
>> To All,
>>
>> The final modification of the Fluke null meters with LED's is completed.
>> The results is impressive, keeping the basic original circuit of the
>> meters. My rev 8 AR version has a double diode in the output stage which
>> seems to remove the zeroing hysteresis around a zero reading was also made
>> to my 845AB. Implementing two 1.2v reference diodes in the zeroing circuit
>> greatly improved the zero drift for the zeroing control. There were also
>> changes to the feedback response by changing two capacitors. If anyone is
>> interested, please E-mail me at my personal address.
>>
>> dosmith at outlook.com
>>
>> Dallas
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