Basic circuit of transistor regulated power supply with amplification link

In the figure, the adjustment tube VTi is equivalent to an emitter output device. The voltage stabilization process of the regulated power supply
is simplified to express the same principle. When U. . When it rises for some reason, the fork will cause Us through feedback. decreases so that the output voltage
remains almost constant.
    By adjusting the resistors R3 and R4, that is, changing the voltage dividing ratio, the output voltage U can be adjusted. . the size of.