![[-]](https://theultimatetone.com/images/collapse.png "[-]")
05-03-2023, 11:03 AM
Thanks Kevin.
The lazer thermometer sounds like what I need.
I have ordered a few 270k resistor rated at 3W for three amps based on my calculations of ohms law. I took out the 27k resistors I had in there rated at 5W (white cement wirewound) started showing some discoloration (brown marks) which is not good. Based in P=V^2/R that resistor should at least have a rating of 10W. Some add a safety factor of 2. So with that 20W. Haha.
I was only perplexed because a resistor rated at 7W should have been sufficient at 110k and shouldn have gotten that hot. But.. temperature could be subjective in it was my own perception of what was hot. I'm going to look up some thermometers in the meantime.
The lazer thermometer sounds like what I need.
I have ordered a few 270k resistor rated at 3W for three amps based on my calculations of ohms law. I took out the 27k resistors I had in there rated at 5W (white cement wirewound) started showing some discoloration (brown marks) which is not good. Based in P=V^2/R that resistor should at least have a rating of 10W. Some add a safety factor of 2. So with that 20W. Haha.
I was only perplexed because a resistor rated at 7W should have been sufficient at 110k and shouldn have gotten that hot. But.. temperature could be subjective in it was my own perception of what was hot. I'm going to look up some thermometers in the meantime.
