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Download the full document: ![]() Abstract: The final-stage collector current of a push-pull complementary-symmetry amplifier is a half-wave rectified version of the signal being amplified. By biasing the amplifier in class C, and using a large amount of negative feedback, the rectification process can be made almost-perfectly linear. This provides the basis for a high-quality AM detector, or a high-frequency linear AC voltmeter. Both functions can also be realised simultaneously, with different time-constants, because there are two collectors from which signals can be extracted. Related articles: ![]() ![]() ![]() ![]() ![]() ![]() |
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