This is thermocouple thermometer circuit..( I attached a pic)
Thermocouple is a kind of temperature sensor that has linear voltage ouput,depending on temperature
First question :
The input voltage from the thermocouple is 40.96uV and the ouput voltage is 10mV when the temperature is 1C.
Therefore,the gain of the non-inverting operational amplifer is 244.14(=10mV/40.96uV)
Does anyone can calculate the 244.14 from the 1K resistor,the 100 ohm potentiometer and the 255K ohm resistor in detail?. I don't understand the role of the potentiometer...
Second question:
I want to change the gain of the non-inverting amplifier to 336.25
what is the value of the resistors and the potentiometer for gain 336.25?
PS. I'm Korean.. my English is poor
Thermocouple is a kind of temperature sensor that has linear voltage ouput,depending on temperature
First question :
The input voltage from the thermocouple is 40.96uV and the ouput voltage is 10mV when the temperature is 1C.
Therefore,the gain of the non-inverting operational amplifer is 244.14(=10mV/40.96uV)
Does anyone can calculate the 244.14 from the 1K resistor,the 100 ohm potentiometer and the 255K ohm resistor in detail?. I don't understand the role of the potentiometer...
Second question:
I want to change the gain of the non-inverting amplifier to 336.25
what is the value of the resistors and the potentiometer for gain 336.25?
PS. I'm Korean.. my English is poor