| 摘要 |
PURPOSE: To perform a high resolution and high precision accuracy control operation in a simple constitution which can be executed only by a one-chip microcomputer by a method wherein, by making use of a sampling signal as a reference, an output signal is generated at a timing which comprises a constant time difference decided according to a sampled output adjusting voltage. CONSTITUTION: On the basis of a sampled output adjusting voltage VC, time data TOUT which is to be set in a T timer is found (ST203), The found time data TOUT is set, and the timer is started (ST206, ST207). Then, an output signal is generated by waiting until the TOUT timer is timed up (ST208, ST209). On the basis of the output signal an ignition signal is generated, and a switching element such as a prescribed triac, a prescribed thyristor or the like is ignited. When a TS timer is timed up after that time data TS which is to be set in the TS timer is corrected on the basis of difference dataΔV which has been found in a previous step (ST210, ST211).
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