gain and phase with high feedback
about zero phase margin with too much feedback
gain and phase margin with lower feedback applied
phase margin
williamson Amplifier
transient analysis
transient of anodic currents
Ia Va characteristic of KT88 in ultralinear mode
transient with rectified power supply
kt88 curves

Stability analysis of a class A four stages Williamson amplifier with feedback applied

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Description

Method to estimate the stability phase margin of a tube amplifier with feedback applied using the SPICE simulation, with the approximation of the linearization of the final tubes KT88 approximated to piecewise linear devices. Ultralinear transformer. Power supply rectifier with tubes diodes 5U4, Ia-Va characteristic of KT88 in ultralinear mode 42%, Analysis of gain versus frequency, amount of feedback and its influence on damping factor.

  • For-Credits
  • Advanced
  • >100
  • PSpice
  • 9.2+
  • Yes
  • gain and phase with high feedback about zero phase margin with too much feedback gain and phase margin with lower feedback applied phase margin williamson Amplifier transient analysis transient of anodic currents Ia Va characteristic of KT88 in ultralinear mode transient with rectified power supply kt88 curves

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