Encyclopedia Magnetica

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squegging

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squegging [2014/09/28 01:26]
Dr Stan Zurek reviewed
squegging [2019/06/03 18:30] (current)
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 | //​[[/​wiki/​reviewed]] by [[user/Jeff Jones]], 2014-09-03//​ | | //​[[/​wiki/​reviewed]] by [[user/Jeff Jones]], 2014-09-03//​ |
  
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 Typical waveform of automatically starting and stopping squegging oscillations Typical waveform of automatically starting and stopping squegging oscillations
 [[file/​squegging_full_waveform_magnetica.png|{{squegging_full_waveform_magnetica.png}}]] [[file/​squegging_full_waveform_magnetica.png|{{squegging_full_waveform_magnetica.png}}]]
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 Such unwanted effects can happen for modern [[RF]] circuits due to [[parasitic]] parameters of a given circuit. Therefore, in most cases squegging is a phenomenon to be avoided. Such unwanted effects can happen for modern [[RF]] circuits due to [[parasitic]] parameters of a given circuit. Therefore, in most cases squegging is a phenomenon to be avoided.
  
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 An example of an electronic circuit (based on [[Hartley oscillator]]) behaving as a squegging oscillator An example of an electronic circuit (based on [[Hartley oscillator]]) behaving as a squegging oscillator
 [[file/​squegging_circuit_magnetica.png|{{squegging_circuit_magnetica.png}}]] [[file/​squegging_circuit_magnetica.png|{{squegging_circuit_magnetica.png}}]]
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 The effect occurs for instance because a [[DC bias]] shifts the operating point of a transistor into saturation which causes the oscillations to cease periodically.[(Otis)] The bias then slowly reduces in the absence of oscillations,​ which can eventually resume, and the whole cycle restarts. The effect occurs for instance because a [[DC bias]] shifts the operating point of a transistor into saturation which causes the oscillations to cease periodically.[(Otis)] The bias then slowly reduces in the absence of oscillations,​ which can eventually resume, and the whole cycle restarts.
  
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 Close up of a single burst of squegging oscillations Close up of a single burst of squegging oscillations
 [[file/​squegging_waveform_close-up.png|{{squegging_waveform_close-up.png}}]] [[file/​squegging_waveform_close-up.png|{{squegging_waveform_close-up.png}}]]
squegging.txt ยท Last modified: 2019/06/03 18:30 (external edit)

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