Typo in PUT article.

Discussion in 'Feedback and Suggestions' started by Pogo1, Oct 11, 2013.

  1. Pogo1

    Thread Starter New Member

    Oct 11, 2013
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    Below the second figure in the article, the sentence "A current spike flows through the cathode during capacitor discharge, developing a voltage spike across the cathode resistors. " refers to "resistors", though there is only one cathode resistor in the circuit.

    Pogo.
     
  2. Georacer

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    Nov 25, 2009
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  3. MrChips

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    Oct 2, 2009
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    [spelling errors in red]



    The characteristic curve for the programmable unijunction transistor in Figure above is similar to that of the unijunction transistor. This is a plot of anode current IA versus anode voltage VA. The gate lead voltage sets, programs, the peak anode voltage VP. As anode current inceases, voltage increases up to the peak point. Thereafter, increasing current results in decreasing voltage, down to the valley point.






    Figure below shows the PUT version of the unijunction relaxation oscillator Figure previous. Resistor R charges the capacitor until the peak point, Figure previous, then heavy conduction moves the operating point down the negative resistance slope to the valley point. A current spike flows through the cathode during capacitor discharge, developing a voltage spike across the cathode resistors. After capacitor discharge, the operating point resets back to the slope up to the peak point.
     
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