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

[wb6bnq]

Hi Dallas,

You could load it up to Didier's repository at ko4bb.com.  He maintains 
a large inventory for Timenuts and related stuff.

Alternately, I would also like to receive you mods as well.

Thank you,

Bill....WB6BNQ


Dallas Smith 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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