| 摘要 |
PURPOSE:To perform the stabilization of an output voltage in real time by varying energy absorption amounts at the respective times due to active variable resistance element. CONSTITUTION:After an output voltage is divided through a potentiometer made of resistors R1, R2, it is compared with a reference voltage due to a Zener diode Dz to produce error information. The information is amplified by a transistor Q1 to then drive a light emitting element PCo of a photocoupler. The light from the element PCo is received by the photoreceptor PCi of the photocoupler, and the output is applied as a control signal to the base of a transistor Q2 which operates in the active range as an active variable element in an energy absorber 12. |
