Amplitude modulator with differential amplifier and current source

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00:50:04

Gain of differential stage depends on current in common emitters. Hence amplitude modulation of high frequency signal is available. To better view of animation low frequency modulation signal in the circuit replaced by square wave.

Коэффициент усиления дифференциальной пары зависит от тока в цепи эмиттеров, что даёт возможность амплитудной модуляции. В данной схеме низкочастотный сигнал модуляции заменён на прямоугольный для наглядности анимации. 

published 10 years ago

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