| 摘要 |
PURPOSE:To prevent each switching regulator unit from mutual frequency interference and reducde the number of parts by connecting a photocoupler between a main switching regulator unit and other switching regulator units. CONSTITUTION:If the output voltage of a switching regulator unit 10 is raised higher than the set voltage, an error amplifier 11 is actuated to amplify the rising or dropping error from the set voltage of the unit 10 and the amplified error signal is sent to a comparator 12. The comparator 12 compares the amplified error signal with a standard triangular wave signal from a triangular wave generator 50 and actuates a switching circuit 13 to drop or raise the output voltage and return the output voltage to the set voltage. When the output voltage of a switching regulator unit 20 is raised or dropped, a photocoupler 70 transmits a triangular wave signal from an amplifier 60 to a comparator 22 in the switching regulator unit 20 and the same operation as said procedure is carried out. |
