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Why is the output terminal of this power amplifier circuit a MOS tube?

Hardware design
Oktober 15, 2020 by Frederick 1327

As shown in the figure, why are there two mos tubes at the output end and why not use triodes?

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Savanna Veröffentlicht am October 15, 2020

The power consumed on the MOS tube is the output current of Rdson*. If the transistor has a saturation voltage, it will dissipate the output current of Vcesat* anyway, and this is a linear circuit.

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Ruth Veröffentlicht am October 15, 2020

It is probably because JFET has higher input impedance than triode.

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Florence Veröffentlicht am October 15, 2020

I think it may be related to the secondary breakdown.

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