Basic regulating tube voltage stabilizing circuit b

Basic regulating tube voltage stabilizing circuit b

 The so-called series voltage stabilizing circuit is to insert a triode in series between the input DC voltage and the load . Its function is that when q or RL
changes, causing the output voltage Uo to change, the UcP of the triode will also follow through some form of feedback. changes, thereby adjusting the output voltage
to keep the output voltage basically stable. Since the transistor connected in series plays a regulating role, it is called a regulating tube.
    Figure (a) shows the basic regulating tube voltage stabilizing circuit . Transistor VI' in the figure is an adjustment tube. In order to analyze its voltage stabilization principle, we
change the circuit shown in Figure (a) into the form shown in Figure (b). At this time we can clearly see that it is essentially based on the circuit shown in the figure. It is composed of an emitter follower. According to the characteristics of the circuit, it can be seen that 乩 and Uz are in a following relationship. Therefore, as long as
the voltage Uz of the voltage regulator tube remains stable, 乩 can also be basically stable when alum and IL change within a certain range. The outstanding feature after adding the medullary device
is the enhanced load carrying capacity.