Optimizing the series connection of thermal converters for AC current step-up

When comparing AC-DC current differences of thermal converters connected in series, capacitive leakage currents from the interconnecting point to the surroundings, and the heater to thermocouple capacitance can become significant, particularly at high frequencies. A method of optimising the series connection, to reduce the leakage currents to less than 5/spl times/10/sup -6/ relative to the measured current, has been modelled and tested experimentally.