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19C adapter



#2

Can someone tell me the polarity of the AC adapter for the HP-19C? I picked up a second-hand calc and battery pack but without the AC adapter. I figure I can get a 5V 200mA adapter from Radio Shack, but I don't want to take the 50-50 chance of connecting it wrong the first time and possibly blowing up the machine.

Thanx in advance,
kiyoshi


#3

The 82059{B,C,D} adapter, which is quite common, will work with the 19C. That's the same adapter used for the 91/92/97, 75, 82143A and 82162A printers, 82161A tape drive, 82120A rechargeable pack for the 41C, and quite a few other products.

They show up on eBay, though not necessarily listed by part number.

Google turns up a page claiming that they are 8VAC at 375mA, with an open-circuit voltage between 10V and 11V. I haven't verified that, but it sounds about right.


#4

After looking on the adapter I can confirm it is 8V~.

#5

Thanks. I'd remembered that it used the same adapter as the TopCats but had totally forgotten about the peripherals. First thing I did when I got home was to go through my 41C stuff and grabbed the adapter from the printer or tape drive (I don't know which adapter came with which device, and it doesn't matter), plugged it in, and let it sit for a few minutes. Presto, a working calculator/charger.

Again, thanx.


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