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If you are AC coupling to a load then you need an emitter resistor to set the DC operating point and quiescent current of the amplifier. An external AC coupled load cannot do this and, it needs to ...
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#1: Initial revision
by
Andy aka
·
2020-10-03T09:40:54Z (about 4 years ago)
If you are AC coupling to a load then you need an emitter resistor to set the DC operating point and quiescent current of the amplifier. An external AC coupled load cannot do this and, it needs to be done to ensure the amplifier works as intended. If your load is a resistor and directly connected to the emitter then you may be able to avoid having an extra emitter resistor.