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HP 41CL - Power Consumption
09-09-2021, 01:01 PM (This post was last modified: 09-09-2021 01:08 PM by Hans Brueggemann.)
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Hans Brueggemann Offline
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RE: HP 41CL - Power Consumption
well, not an idea in terms of what a probable fault could be. but here you may find an idea about how to sense the supply current of your calculator:
Current sensing in battery compartments
it is just a stripe of Kapton foil "sandwiched" between two self-adhesive copper strips, so both strips are fully isolated from each other. the copper strips each have a super-flex wire soldered to them and are then "short-circuited" via a DMM set to mA mode.
(running out of data space here in the forum, and don't want to delete anything. hence the link to my post on eevblog.)
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Messages In This Thread
RE: HP 41CL - Power Consumption - AndiGer - 08-23-2021, 10:14 AM
RE: HP 41CL - Power Consumption - mfleming - 08-23-2021, 02:29 PM
RE: HP 41CL - Power Consumption - mfleming - 08-25-2021, 06:12 PM
RE: HP 41CL - Power Consumption - Hans Brueggemann - 09-09-2021 01:01 PM
RE: HP 41CL - Power Consumption - Neve - 09-09-2021, 07:05 PM



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