Posts: 90
Threads: 2
Joined: Jan 1970
John - if it has batteries in the converter then the answer is 'yes' - these will hold (regulate) the DC voltage. (I assume the batteries are in good condition).
If the answer is 'no' then tread carefully, you might like to consider a variable voltage DC supply setting the output to 8.7V. Again I dont know if there is a full wave rectifier in the convertor in which case polarity is immaterial. Youll quickly find out though as the unit will either work or not (though no damage will result). Hope this helps!
Posts: 288
Threads: 15
Joined: Dec 2007
Do you have the 82165 or 82166 device ?
The 82165 has an AC input, so the polarity is not essential
No Dave, there are no Batteries in this device. There is a stabilisation circuit in the 82165. You will kill the 82166, with applying any AC voltage to the pins.
John, you might want to read this thread about the adapter you'd need. I'm from Austria and the adapter should be pretty similar, if not the same.
http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv001.cgi?read=1350
The 82166 has a two row 44 pin connector and needs exactly 5 V DC. The pinning is written on the 82166.
The adapter you'd want is a 82066B.