[volt-nuts] Completion of LED Mod's for the Fluke 845AB & 845AR Null Meter.
wb6bnq at cox.net
Sun Nov 23 22:18:19 EST 2014
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.
Dallas Smith wrote:
> How do I make my RTF attachment available to Volt-nuts? I do not trust
> cloud servers and the like.
> 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
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