HP97 adapter



#4

Hi Folks,
I just purchased and recieved an AC adapter (supposedly) for my HP97, which appears to be not quite compatable with my machine. The problem is, my 97 has a partition between the contacts where the adapter plugs in, but the adapter does not have a big enough notch to accomodate the partition (there is a notch separating the female contacts on the adapter plug, but it's too small. It appears that if I either got rid of the partition or opened up the notch on the adapter, it would work. The no-load output from the adapter is about 12VAC.

Can I just open up the adapter plug notch and use it?
Any help appreciated.
Best regards, Hal
PS...link to item I purchased


#5

I believe the ridge was added on later production Topcats (and AFAIK all HPIL peripherals), after some user discovered that the common 'figure of 8' mains lead (as used on radios, cassette recorders, etc) would plug straight into the calculator. Applying 110V (or worse 230V) to said machine did a lot of damage.

I think the adapters are electrically the same for both the old and new models -- certainly I have never seen a warning about using a new-style adapter with the original type of machine. It should therefore be OK to just open up the gap in the adapter connector a bit.


#6

Thanks Tony...

That explains it. I did open up the channel in the plug and the adapter works fine with the machine.

Best regards, Hal


Possibly Related Threads…
Thread Author Replies Views Last Post
  Disaster: help for a couple of HP97 needed! Jose Gonzalez Divasson 10 2,972 01-21-2013, 04:45 PM
Last Post: aurelio
  PCMCIA SD adapter for 200 LX? wildpig 4 1,753 08-27-2012, 08:20 AM
Last Post: Bill (Smithville, NJ)
  Charging Current in HP97, 82143A, 82162A Les Wright 5 2,048 06-17-2012, 02:11 PM
Last Post: Les Wright
  can you identify this HP97-67 book? Ignacio S├ínchez 4 1,905 06-13-2012, 01:02 PM
Last Post: db (martinez, ca.)
  HP-35 Charger/Adapter Repair (82002C) LHH 0 968 05-19-2012, 01:21 AM
Last Post: LHH
  more HP97 card reader followup. Dave F 4 1,565 12-02-2011, 10:06 PM
Last Post: Dave F
  AC Power Adapter for HP 67 Phil Hochstetler (Portland, OR, USA) 3 1,348 12-01-2011, 07:59 PM
Last Post: Dan W
  HP97 card reader followup Davd F 14 4,170 11-25-2011, 02:06 PM
Last Post: Dave F
  Cleaning HP97 body Olivier De Smet 1 1,018 09-24-2011, 03:54 PM
Last Post: Katie Wasserman
  HP97 charger Olivier De Smet 5 1,796 09-20-2011, 06:53 AM
Last Post: Paul Berger (Canada)

Forum Jump: