| 摘要 |
PURPOSE:To prevente the generation of an undesired pulse and to obtain a PWM output with high accuracy by synchronizing the generation timing of the output pulse of a pulse synthesizing means with a non-trigger point of a reference clock pulse. CONSTITUTION:A pulse generator 4 produces a quantum pulse, and a digital data output circuit 6 produces the data to be converted with plural bits. This data and the quantum puls are ANDed every bit and are supplied to a delay circuit 20. The circuit 20 is triggered at a non-trigger point, i.e., a rise point of a reference clock pulse fin. As a result, the PWM output produced at an output terminal 24 is delayed by an amount equal to a pulse width of the fin. This can avoid the hazard. |
