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HP-29C - Brighter LEDs?
04-30-2022, 01:24 PM
Post: #2
RE: HP-29C - Brighter LEDs?
I don't know for sure, but the 29C has a direct output from the power supply into the Anode driver, where as the 25C has a 56 ohm resistor in series, so it might be brighter for this reason, or because the display modules have different part numbers, or both.

The HP-21 shows same display module as the 25C but with the same direct connection to power supply. Not sure how this brightness compares.

These 3 models have different anode drivers for the display as well.

cheers

Tony
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Messages In This Thread
HP-29C - Brighter LEDs? - Tom Flatterhand - 04-30-2022, 09:26 AM
RE: HP-29C - Brighter LEDs? - teenix - 04-30-2022 01:24 PM
RE: HP-29C - Brighter LEDs? - rprosperi - 05-01-2022, 06:38 PM
RE: HP-29C - Brighter LEDs? - rprosperi - 05-01-2022, 10:30 PM
RE: HP-29C - Brighter LEDs? - aurelio - 05-03-2022, 10:23 PM
RE: HP-29C - Brighter LEDs? - twoweims - 05-03-2022, 10:30 PM
RE: HP-29C - Brighter LEDs? - GreyUser - 05-03-2022, 11:26 PM



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