On January 28, 2006 at 18:16, ledan said...
OFA 9910:
R24 = 220K
R23 = 330K
I removed R23 and replaced it with a variable
resistor 0 - 500K. Don't know the final value
but it should be under 100K.
IR noise diminution = 90%
Curious-- why would you change r23 instead of r24? Does it matter? I wound up buying a 500 pack of resistors at RS, but the 910K isn't in there... a 1M is, and a 800k... so since I'm new to resistor work, not sure what my options are overall. But a 500K at R23 doesn't seem like as much of a change as a 910K at R24. (Like I said, I'm new at this! :)
If I'm reading up on this correctly, a 1M and a 10M should get me close the 910K, as should a 2.2M and 1.5M in parellel? Or would I be better off going with (2) 470K resistors in serial?? Or doesn someone simply have a spare 910K they could share? lol (Can only find em by the hundred online, and no go at RS! Thanks for any help!
Murph
Last edited by Murph74
on February 6, 2006 12:42.
