| 摘要 |
FIELD: radio engineering for use as an output stage of high-precision (linearity) amplifiers. ^ SUBSTANCE: the amplifier (Fig.5) is made in the form of series-connected stages with a common emitter icing transistors (VT2, VT3, VT4, VT5) and resistors (R1, R2, R3, R4, swinged by the source of the signal current on transistor (VT1), whose collector includes the bias voltage source (U bias) and the dynamic load-current generator (I0). Diodes (VD1, VD2) provide for switching of arms, and the current sources (I1, I2) - prevent a cut-off of the arms currents at amplifier operation in condition AB. ^ EFFECT: reduced switching distortions arising at a change-over of the amplifier arms. ^ 3 cl, 9 dwg |
