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HP97 Card Reading
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02-17-2021, 11:10 PM
(This post was last modified: 02-17-2021 11:14 PM by teenix.)
Post: #5
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RE: HP97 Card Reading
Totally unsure on this, but the card reader has analog amplifiers inside the sense chip so maybe they are a bit sensitive to voltage variations when reading.
As the card write is more digital in operation, does the card write ok on battery only? You could write on battery only then reconnect the charger after the write to see if it reads back ok. The 97 also has additional circuitry attached to the sense chip (not really sure what it does) but I suspect compensates for the 5V supply instead of 3.75 for the 67. cheers Tony |
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HP97 Card Reading - dbhp67 - 02-16-2021, 01:55 PM
RE: HP97 Card Reading - teenix - 02-16-2021, 09:28 PM
RE: HP97 Card Reading - Dave Britten - 02-17-2021, 02:35 PM
RE: HP97 Card Reading - dbhp67 - 02-16-2021, 09:34 PM
RE: HP97 Card Reading - teenix - 02-17-2021 11:10 PM
RE: HP97 Card Reading - [kby] - 02-18-2021, 07:40 PM
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