But to make that measurement you need an amplifier circuit designed for the thermocouple being used. Linear Technology LTC 1049 Low Power Zero-Drift Operational Amplifier with Internal Capacitors ...
One of the interesting things about [Ynze’s] amp, as well as many of the Gainclones, is the fact that they use no circuit board. All wiring is done point to point. resistors are soldered ...
The 303’s ‘triples’ transistor output configuration solved the thermal instability issues that plagued early transistor amplifier designs. This circuit layout produced low distortion ...