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Tuned LCR circuit for humidifier

Discussion in 'General Electronics Chat' started by antknee, Jan 17, 2010.

  1. Ginger185

    Ginger185 New Member

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    UncleJed.
    Sorry, another question, not sure if you can help, or hazzard a guess. In the circuit at post 62,
    there is a diode with no marking/type, any ideas what it could be? Also, the variable resistor,
    any guesses as to what the range on it would be?
    Thanks
     
  2. royalblood

    royalblood New Member

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    beginner in electronics

    hi eric i checked your circuit you attached i can understand most of it but could not understand what is that 1.5 turns is. is it inductor or some thing else. i am just beginner i can only read the circuits to limited level.

    thanks
     
  3. RFActive

    RFActive New Member

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    Here is a question about replacing the driver transistor in an oscilator. The consumer humidifier blew the NPN BU406, I replaced it, but now there is a pot on the board- it accessible through an access door. Is the pot there to tune for maximum resonance, or, a dip in the oscilation. I do not have a schematic, but the attached schematic, posted awhile back, seems to be similar. It worked for a couple of hours and stopped, but restarted when cooled down. Any ideas? View attachment neb2.pdf
     
    Last edited: Apr 21, 2013
    • Thanks Thanks x 1
  4. dave

    Dave New Member

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  5. trankhanhcr

    trankhanhcr New Member

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    Help me..... i used it..... but it don't........ I need change something to it work.......



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