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Barkhausen criterion |
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Barkhausen criterion [′bärk‚hau̇z·ən krī‚tir·ē·ən]
(electronics) A criterion used to determine the stability of an oscillator circuit which states that, if the circuit is seen as a loop consisting of an amplifier with gainAand a linear circuit whose gain β(jω) depends on frequency ω, then the loop will oscillate with a perfect sine wave at some frequency ω0if at that frequencyAβ(jω0) = 1 exactly, that is, if the magnitude ofAβ(jω0) is exactly 1 and its phase is 0° or 360°. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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