| 摘要 |
<p>PURPOSE:To prevent an advance command from erroneously operating by outputting an unit advance command by two auxiliary commands which alternately operate by the detection of the maximum conduction rate. CONSTITUTION:The first unit U1 is a phase control stage, and the second fifth units U2-U5 are ON/OFF control stages. When the first unit becomes the maximum conduction rate, the first unit is reduced, and advance commands for turning ON and OFF the second and later units are simultaneously output. The operations of the unit operation commands 2R-5R are stored by an auxiliary command R, and even and odd unit operation commands PER, POR are alternately operated by the command AR and the maximum conduction rate detection MPR. Thus, the commands 2R-5R are alternately output. Accordingly, two or more unit operation commands are not simultaneously output by one maximum conduction rate detection.</p> |
