Push–pull output: Difference between revisions

Revision as of 08:35, 4 June 2011

Revision as of 03:46, 24 August 2011

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{{unreferencedrefimprove|date=November 2010}}

{{Other uses of|push–pull|Push–pull (disambiguation)}}

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Categories include:

==== Transformer-output transistor power amplifiers ====

It is now very rare to use output transformers with transistor amplifiers, although such amplifiers offer the best opportunity for matching output devices (with only PNP or only NPN devices required).

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==== Square-law push-pull ====

The output devices, usually [[MOSFET]]s, are configured so that their [[Power-law#square-law|square-law]] transfer characteristics (that generate second harmonic [[Distortion]] is used in a single-ended circuit) cancel distortion to a large extent. That is, as the voltage across one transistor's gate-source voltage increases the remaining bias voltage to the complementary device is reduced by that amount and the drain current change in the second device approximately corrects for the non-linearity in the increase of the first. <ref> {{cite journal | author=Ian Hegglun | title=Practical Square-law Class-A Amplifier Design | Journaljournal=Linear Audio - Volume 1}}</ref>

=== Push-pull tube (valve) output stages ===

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== External links ==

*[http://www.aikenamps.com/SingleEnded.htm Push–pull vs. single-ended output] in analogue tube amplifiers