AUTOMATIC SIGNALS AMPLIFICATION CIRCUIT Russian patent published in 2019 - IPC H03G1/00 

FIELD: electrical engineering.

SUBSTANCE: present invention relates to electrical engineering. Automatic signals amplification scheme containing amplifying cascade at the first OA with controlled amplification factor, with reference voltage source made on the first stabilitron with the first diode, characterized by that the circuit includes the second reference voltage source made on the second stabilitron, the second diode, at that, the second diode anode is connected to the second stabilitron anode, the second stabilitron cathode is connected to the first stabilitron anode, the second diode cathode is connected to the device output, the first stabilitron cathode is connected to the first diode cathode, an error signal amplifier is introduced, a "error" signal divider is introduced, a boost capacitance is introduced on the second capacitor, a limiting resistor is introduced, a blocking capacitance is introduced on the first capacitor, wherein the value of the "summing" signal from the output of the "error" signal amplifier at the second OA supplied to the input of the first OA, to which the first resistor and the second resistor, which determine the amplification factor of the first OA, are connected, provides adjustment of the amplification factor.

EFFECT: stabilization of output signal amplitude and reduction of control delay.

1 cl, 1 dwg