I am struggling to come up with the same Rt1 and Rt2 values for the NTC resistors (used as examples in the data sheet) and I want to make sure I have the correct inputs and am using the right values as provided.
Here is my math … scratching my head on where my mistake is.
Any help would be appreciated.
I may have figured it out. Vcold is not a voltage in the calculations correct? It is a % ripped directly from the Electrical Characteristics. Is that correct? When I insert I get the correct values.
Hi willbond,
You are correct. Vcold, Vhot, Vwarm, and Vcool must all be interpreted as their percent values listed in the Electrical Characteristics table on Page 10. Here is a new calculations spreadsheet similar to yours that produces the example Rt1 and Rt2 values on Page 36:
