Static error in the temperature constant measurement configurations due to DC amplifier offset voltage
Raimundo C. S. Freire, Francisco Santos, R.N.C. Alves, Aléssio Trindade de Barros, B.A. Luciano · 2004
The DC amplifier offset voltage introduces dynamic and static errors in measurements based on heated sensors at constant temperature configuration. It is shown, in the case of a radiometer, the variation of static errors in function of offset voltage for configurations of feedback based on analogic voltage control and on pulse width modulation - PWM. These errors increase with offset voltage and are similar in PWM configuration, decreasing with pulse amplitude.