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cw的5w搞得这么复杂也太没技术含量了……看着架构应该是ssb线性功放才对,但是pcb上赫然印着cw amp,不可思议……
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基极直流偏置到地,还真做不了线性功放总效率63%,增益37db,或许是这么复杂的原因?
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2n7000搞class e也能出5whttp://www.norcalqrp.org/files/class_e_amplifiers.pdf
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黄小江:功放末级没设置偏置,中点波形一定失真!把偏置加上成本也不会增加多少,不知原设计者是怎样考虑的?[表情] (2012-04-14 21:07)
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