| 摘要 |
PURPOSE: To determine the circuit characteristics accurately while taking account of self-heating of circuit elements by repeating the calculation of current and voltage without taking account of self-heating of each circuit element and the calculation of new temperature considering the temperature variation due to variation of power consumption alternately. CONSTITUTION: At first, current and voltage are calculated without taking account of self-heating of each circuit element based on a circuit equation, input conditions and temperature T of circuit. Current of each circuit element, variable depending on the power consumption of circuit, is then determined and a temperature variationΔT is determined based on the variation in power consumption of circuit due to variation in the current of each circuit element thus setting T+ΔT as a new temperature T. Two calculations are repeated alternately until the state of circuit is settled thus determining the voltage or current. Since mutual dependency of the temperature variation due to power consumption of circuit and the characteristic variation of circuit due to temperature variation is taken into account repeatedly until the circuit state is settled, accurate circuit characteristics can be determined while taking account of self- heating of circuit element.
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