ALTERNATING CURRENT AMPLIFIER WITH CONTROLLED AMPLIFICATION Russian patent published in 2010 - IPC H03F3/45 H03G1/04 

FIELD: radio engineering.

SUBSTANCE: device comprises the first input transistor, emitter of which is connected to the first output of statistical mode setting circuit, the second input transistor, emitter of which is connected to the second output of statistical mode setting circuit, load dipole connected to collector of the second input transistor and output of controlled amplifier, the first input of controlled amplifier, which is connected to base of the first input transistor and source of signal, the second input of controlled amplifier, which is connected to base of the second input transistor. Between the first output of statistical mode setting circuit and power supply source bus there is additional capacitor connected, collector of the first input transistor is connected to output of controlled amplifier, and the second input of controlled amplifier is connected to source of control voltage.

EFFECT: creation of conditions for electronic control of amplification ratio by voltage of AC voltage amplifier.

3 cl, 6 dwg