| 摘要 |
<p>PHN 9627 16 Multiplying circuit comprising a pair of transistors including first and second transistors arranged in long-tailed pair configuration having a collector output and interconnected emitter electrodes which are coupled to a first current source, also comprising a bias voltage adjusting circuit applying an equal base bias voltage to the base electrodes of the pair of transistors, these base electrodes being connected to a signal input, a control of the amplitude of the output signal then taking place. To this end the multiplying circuit comprises a control distribution circuit including a shunting transistor whose collector-emitter path is DC connected in parallel to those of the first-mentioned transistors, as well as a control circuit for applying a control voltage between the base electrode of the shunting transistor and that of the pair of transistors.</p> |
