| 摘要 |
<p>PURPOSE:To enable high-speed processing by evading the occupation of a CPU due to the temperature compensation of the output of a PWM circuit. CONSTITUTION:The compensated value of the output of the PWM circuit corresponding to ambient temperature is previously stored in a ROM 5 dedicated to the compensated value and the ambient temperature which is digitally converted by an A/D converter 2 actuated in response to the overflowing of a timer circuit 16 is outputted to an adder 4; and the adder 4 adds an index value corresponding to the ambient temperature to the head address of the ROM 5 and an adder 8 adds the compensated value, which is outputted from the address and latched in a latch circuit 6, to the momentary sampled value of a source signal stored in a register 7 and outputs the result to the PWM circuit 9.</p> |
