I am tring to connect thermocouple vacuum gauge tube (pmt2) to pc using Arduino uno. Output of gauge is up to 10 mV. Analog input is 10 bits of arduino. So, reading is not enough accurate.
I desided to amplify signal using operational amplifier as in link below:
http://www.belljar.net/tcgauge.htm
They suggest to use two power supplays one for filament other one for amplifier cirquit (no common ground) to avoid short.
So, my question. Is it possible somehow to use one power supplay for both filament and for amplifier?
I desided to amplify signal using operational amplifier as in link below:
http://www.belljar.net/tcgauge.htm
They suggest to use two power supplays one for filament other one for amplifier cirquit (no common ground) to avoid short.
So, my question. Is it possible somehow to use one power supplay for both filament and for amplifier?