| 摘要 |
PURPOSE:To make an output voltage constant in the range of 50 to 100% of an input voltage even when a load is increased. CONSTITUTION:In a power source AVR device wherein a primary winding N1 of a transformer TF and a switch element Tr are connected in series to an input power source and a time constant circuit 1 and a secondary winding N2 of the transformer TF are connected in series between a base and an emitter of the switch element Tr so that oscillation be made and wherein a voltage generated in the primary winding N1 is smoothed and outputted through a diode when the switch element Tr is OFF, the constant of the time constant circuit 1 is selected to obtain a switch period of 22 to 24musec and a constant output voltage in the input range of 50 to 100% input voltage even when a load is increased. |
