VOLTAGE STABILISER WITH LOW NOISE LEVEL Russian patent published in 2013 - IPC G05F1/56 

FIELD: electrical engineering.

SUBSTANCE: proposed is a voltage stabiliser with a low noise level containing a regulator element (with an inverting and a non-inverting control inputs and an output connected to the device input and the resistive voltage divider input, the resistive voltage divider output linked to the inverting input of the differential error amplifier), a reference voltage source (connected to the non-inverting of the differential error amplifier), the first current output of the differential error amplifier (linked to the inverting control input of the regulator element), the second current output of the differential error amplifier (linked to the non-inverting input of the regulator element) and a balancing capacitor; additionally introduced into the circuit is a differential amplifier the inverting input whereof is connected to the non-inverting input of the of the differential error amplifier via the first resistor while the non-inverting input is connected to the reference voltage source via the second resistor; the first current output of the additional differential amplifier is connected to the inverting input of the regulator element while the second current output of the additional differential amplifier is connected to the non-inverting input of the regulator element; the balancing capacitor is placed between the non-inverting input of the additional differential amplifier and the power supply common bus.

EFFECT: reduction of the voltage stabiliser output noise level.

4 cl, 8 dwg