What is the difference between the B and D?



Should be a different localisation.




No, the base (numeric) part number is different when the plug and/or voltage rating is different. The letter is a product revision. The 82059A wasn't suitable for later calculators. They added a slot in the plug and a keying piece in the socket to prevent the 82059A from being plugged into later calculators.

I'm not sure about the difference between the B and D; it's possible that it is just a manufacturing change with no significance to end users. Check the manual for a specific calculator to see which model is recommended; later revisions should work fine. In other words, if the manual calls for an 82059B, and 82059D will be fine, but the reverse may not be true.


Electrically they seem identical. As far as markings go, the D-model has "Class 2 Transformer" in addition to all the language that appears on the B-Model. This suggests they were designed to meet a slightly different u.l. rating 891Z for the D model and 191J for the b model.


Thanks. So, are they interchangeable?


I think so, the manuals are not very heavy on what AC plugs are interchangeable.


So I have noticed. Of all the devices I have only the 9114B and 41CX battery pack manuals specify what recharger to use (A, B, or C based on location). None mention D. The rest just refer to the AC adapter.

BTW I've only ever used a 'D' with my 9114Bs.


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