[volt-nuts] HP 419 (WAS: Fluke 335A versus HP 740B)
Jean-Louis Noel
jln at stben.net
Sun Dec 23 10:39:17 UTC 2012
Hi Peter,
From: "Peter Loron" <peterl at standingwave.org>
> Obviously you should not use any built in charging circuit that is not designed for use with
> the chemistry of the new cells.
Obviously the old HP circuit is not designed to feed lithium batteries as MK proposed.
I use three 9V batteries in serial with the battery in the middle transformed.
You remove 1 element and connect a wire in the middle.
http://www.stben.net/hp/DSCN0644.JPG
http://www.stben.net/hp/DSCN0645.JPG
http://www.stben.net/hp/DSCN0646.JPG
http://www.stben.net/hp/DSCN0647.JPG
http://www.stben.net/hp/DSCN0648.JPG
http://www.stben.net/hp/DSCN0649.JPG
http://www.stben.net/hp/DSCN0650.JPG
Bye,
Jean-Louis
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