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A question about alternative power supply for hp41 series
02-25-2016, 05:24 PM
Post: #27
RE: A question about alternative power supply for hp41 series
Hi,
I have the 41 which has already the balls connected to main board.
About the connector that come from wall power supply, it's quite simple! Do you have one usual HP power supply?
Look at its connector - it is a divided in two, ok? (my language is not helping here...).
I cut two small alluminium plates and, at one end, I folded them (as it was a pin) and insert in the hole of connector. So, I folded again and glued on the upper side of connector. These plates will make the contact to the balls.
The power supply was modified too, as I rectified and stabilized it on 6V using one simple 7806.
Very, very simple and works great!
I'll post some pictures when I get home.

ARTUR MARIO JUNIOR
BRAZIL
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Messages In This Thread
RE: A question about alternative power supply for hp41 series - Artur - Brasil - 02-25-2016 05:24 PM
HP41c running on single AA accu - wojtek - 02-27-2016, 12:09 AM
HP41c running on single AA accu - wojtek - 02-27-2016, 08:31 AM



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