Looks like a 200k resistor in parallel will get me within 5% of the desired values from about -5 deg F all the way up to 80 deg F, which should be perfectly satisfactory.
Now the question becomes: how do I select the correct resistor to purchase? I'm not familiar with things like TCR...
Actually, the range I'm most interested in is on the "lower end", between say 20 and 50 deg F; I say lower end even though this is actually closer to the middle of the data range I've posted because the temps in my area don't frequently go below 10 deg F for very long, so accuracy below that...
It's actually an outdoor temperature sensor for an HVAC system thermostat. When the system was installed, it came with the base model thermostat from the manufacturer and the accompanying outdoor temp sensor for that thermostat. I've since installed a more advanced thermostat from a different...
I'm hoping someone with a bit more EE background than myself can answer a question for me.
I've got an outdoor temperature sensor which is a simple thermistor with two lead wires. I'm wondering if it's possible to modify the resistance curve of the thermistor with a simple circuit (i.e. by...