LV stabilising circuit with reference comparison transistors - controlling regulating transistor base coupled to input and output

摘要

A LV stabilising circuit has a controllable first transistor (T1), a voltage divider (Rx, Ry, R28) connected to the stabilised output voltage, a reference source, and a control circuit with two or more transistors (T2 T3) controlling the base of the first transistor according to output voltage variations. Its performance is increased compared to that of similar circuits to give accurate control at low cost. The common base and collector of the two transistors are connected via a resistor (R5) to the positive output connection. They are also connected to the unstabilised positive connection via a resistor (R3) and capacitor (C1).