[OT] Casio PRISM Current Draw?


Has anyone seen/taken any measurements of the Prism at both idle and running? Different brightness levels?



i'll do some...


ok, some quick results are:

max current when calculating (also on initial power up) = 30ma.
sitting in the main (color) menu = 11ma.
idling in the calculator (main app) = 7ma
[why this is less than when on the main menu, not sure. unless the brightness is slightly different here].
when screen goes dim = 3ma

one other thing is that the current draw seems to fluctuate by about 1.5ma all the time. not sure why. my numbers above are averages.


Interesting numbers. Thanks for that. I've been curious since it came out.



I expected that you did these measurements at HP already in December 2010 ;-))

Cheers, Joerg


Nope. Just personal interest is all.

Speaking of which, how about some inspiring CX numbers? :-)




These were pre-production models and I had to sign a NDA that I don't open the units or do any kind of reverse engineering.
I sent them back to Dallas a few days ago.



Well, how about on just any other nspire model? I don't think I've seen power readings on that either.




Give me a few days - it is not that easy.
The connection of the two 3V strings to the PCB isn't that straight forward.


Possibly Related Threads...
Thread Author Replies Views Last Post
  ENG button (like Casio calculators) on HP Prime uklo 3 1,565 11-04-2013, 09:45 PM
Last Post: LHH
  Draw with your finger on HP Prime ! Mic 5 1,658 10-23-2013, 10:00 AM
Last Post: CompSystems
  HP Prime - One thing I can not draw in advanced graphing dg1969 2 1,046 10-19-2013, 02:00 PM
Last Post: dg1969
  [HP Prime] Request: re-execute history like CASIO classPAD serie 300/400 CompSystems 1 1,084 09-03-2013, 02:47 PM
Last Post: CompSystems
  OT: Does anyone have the new Casio Classpad fx-CP400? Eddie W. Shore 4 1,468 08-20-2013, 08:42 AM
Last Post: Eddie W. Shore
  Casio fx-CP400 emulator (90 days trial) Mic 2 1,411 05-16-2013, 01:07 PM
Last Post: critor
  OT: RPN port to Casio fx-cg10/20? Matt Kernal 4 1,538 04-30-2013, 12:16 PM
Last Post: hugh steers
  HP-35 and HP-65 Current Requirements Dan Lewis 0 739 03-05-2013, 12:11 AM
Last Post: Dan Lewis
  Casio fx-CP400 preorder for Europe ! Mic 3 1,174 12-08-2012, 01:02 PM
Last Post: Mic
  OMG : NEW Casio calculator with color !! Mic 23 4,111 11-29-2012, 01:27 PM
Last Post: Eddie W. Shore

Forum Jump: