HP calculators power consumption



#3

Anyone knows where I can find news about HP calculators power consumption (in watts or milliwatts)? It is just a curiosity, especially for Voyagers and Pioneers.

Thanks in advance.


#4

There is some info at the following string: http://groups.google.com/group/comp.sys.hp48/browse_frm/thread/c13df971c543c6a6/

Voyager series:


"High reliability: The ICs had intermediate oxide layers to trap contaminants
and were routinely inspected and tested at elevated temperatures.
The ICs were designed to survive electrostatic discharges
in excess of 4000 volts."


"Lower power consumption: An 85 thousand transistor circuit
drew .25 milliwatts and had a standby leakage of 5 - 10 nanoamperes.
The process was meant to allow calculators to run for a year
from a set of small batteries but several owners have reported
that they are still running on their original batteries after 20-22 years."
[apparently some batteries are built to survive that long,
without even leaking :]


Possibly Related Threads…
Thread Author Replies Views Last Post
  HP Prime Save Power Turn Off Not Working Timothy Roche 12 4,278 10-27-2013, 01:41 PM
Last Post: Michael de Estrada
  Low power warning for HP-15C LE and batteries Nick_S 1 1,453 09-16-2013, 09:34 AM
Last Post: Hans Brueggemann
  HP 9845 option 200 power supply Dave F 2 1,663 05-30-2013, 08:10 AM
Last Post: Dave F
  HP-87 power supply repair philippe_elie 0 942 11-18-2012, 11:12 AM
Last Post: philippe_elie
  HP-48: extract coefficient of power series Thomas Klemm 3 1,608 10-21-2012, 11:42 PM
Last Post: Han
  HP-41CV power problem Don Davis 2 1,324 10-11-2012, 09:13 PM
Last Post: Don Davis
  What power adaptor does an HP-65 use? Robert Morton 3 1,456 09-30-2012, 02:32 PM
Last Post: Kees Bouw
  HP 15c LE low power anomalies Nick_S 21 5,283 03-31-2012, 09:32 AM
Last Post: uhmgawa
  Very relevant to the HP-15C LE power usage Seth Morabito 1 1,008 01-06-2012, 10:38 PM
Last Post: htom trites jr
  AC Power Adapter for HP 67 Phil Hochstetler (Portland, OR, USA) 3 1,415 12-01-2011, 07:59 PM
Last Post: Dan W

Forum Jump: