[volt-nuts] HP 419 (WAS: Fluke 335A versus HP 740B)
Charles P. Steinmetz
charles_steinmetz at lavabit.com
Sun Dec 16 23:34:06 UTC 2012
>The oldest has a oval 3 pin AC connector.
>A newer one has a standard IEC socket.
>Both of these have 3 battery packs made of some form of coin cell, NiCd,
>225ma, 5 to a stack.
These are what I'm familiar with (I presume you mean 4 packs, not
3?). The batteries are Y-5201, long obsolete.
>The newest 419 is different. Different battery holder, and uses 4 packs
>of 5 1/3AA cells. These are not common, but are not that hard to get.
>Now, converting an older unit would not be hard. The only thing diff is
>the mount and the packs themselves.
>shopping for 20 good tabbed 1/3AA cells. Solder 5, inline
>shrinktube, repeat 4 more times and done.
Thanks very much for this information!
Yesterday I tried to post a message with a drawing of the older
battery installation, but it was rejected as oversize.
A very good US source for the best quality NiCd cells is SR Batteries
<http://www.srbatteries.com/>. He can also build packs with welded
straps and tabs (soldering directly to the cell almost always
substantially reduces the life of NiCds, no matter how careful you
are). I do not know if he can supply 1/3AA cells, but it is worth
checking. (No connection other than satisfied customer.)
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