volt-nuts@lists.febo.com

Discussion of precise voltage measurement

View all threads

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

W
wb6bnq
Mon, Nov 24, 2014 3:18 AM

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@outlook.com

Dallas


volt-nuts mailing list -- volt-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
and follow the instructions there.


volt-nuts mailing list -- volt-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
and follow the instructions there.

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@outlook.com >> >> Dallas >> _______________________________________________ >> volt-nuts mailing list -- volt-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts >> and follow the instructions there. >> >> > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. >