Develop A TB88 Step-Up Circuit for Minor Thermoelectric Signal

Abstract

A TB88 step-up circuit for minor thermoelectric signal, induced by chip "TEG-12703", is developed in this study. Here several hundred microvolts could be created if finite differential temperature on the side surface of thermoelectric chip is imposed. Such small amount of voltage induced seems to be not adequate to meet the demand of commercial benefit unless a step-up circuit to augment the electrical potential is specified. In this article, a step-up circuit of TB88 IC with thermoelectric-electricity transforming efficiency 55~65% has been carried out and successfully boosted the voltage from 0.5 V to 5V. That not only holds an extra 40 % advantage of power delivery, compared to the performance accessed from commercial amplified device " CE8301" (Figure 1), but also significantly reduces the experimental cost required and easily accessed for local laboratory.