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  • robi-k

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    válasz bajnokpityu #111372 üzenetére

    Akkor kérdeznék/tanulnék: én igy ismerem az AB osztály működését (bekopizva a wikipédiáról): In class-AB operation, each device operates the same way as in class B over half the waveform, but also conducts a small amount on the other half. As a result, the region where both devices simultaneously are nearly off (the "dead zone") is reduced. The result is that when the waveforms from the two devices are combined, the crossover is greatly minimised or eliminated altogether. The exact choice of quiescent current (the standing current through both devices when there is no signal) makes a large difference to the level of distortion (and to the risk of thermal runaway, that may damage the devices). Often, bias voltage applied to set this quiescent current must be adjusted with the temperature of the output transistors.

    Hogyan - és milyen üzemmódban - vált át "A" osztályba?

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