| 摘要 |
FIELD: electrical engineering.SUBSTANCE: proposed is a DC voltage stabiliser containing a regulating transistor connected via the emitter and via the collector to the input and the output pins respectively, a differential DC amplifier on two transistors, their conductivity opposed to that of the regulating transistor while their joined emitters, via the resistor, connected to the common pin, the first transistor collector, representing one of the inputs of the differential amplifier, is connected to the base of the regulating transistor and (via the resistor) to the input pin while the second transistor collector representing the other input of the differential amplifier, is connected to the output pin, its base connected to the output voltage divisor output; the base of the first transistor, representing the differential amplifier output, is connected to the output of the reference supply source consisting of a limiting resistor and a zener diode, connected in series. The limiting resistor is connected to the output pin while the zener diode is connected to the common pin; additionally envisaged is a smoothing capacitor placed in parallel to the output pins, as well as a starting capacitor placed between the regulating transistor base and collector and ensuring diode staring of the regulating transistor at the moment of input voltage supply.EFFECT: increased reliability by simplification of the start-up circuit.2 dwg |
