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Staigen

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Posts posted by Staigen

  1. Hey all. New member ere. Little help please??

    in Electronics chit chat

    Posted

    Hi sinn

    What kind of engine is this? A stationary engine? A truck engine? Any other
    kind of engine? Can this coils be removed in a simple way(without dismantling
    the engine)? Are they electrically insulated? Is it glow plugs, found in some
    diesel engines? Questions are many, since you didn't supply us with enough
    information in the beginning, before you can get an answer.

    //Staigen

  5. voltage change factor

    in Electronics chit chat

    Posted

    Hi

    Oops, that was a BIG question, there are written a whole book about it, but i will
    try to show you. first we have to talk a little about the transformer, it have 40 V
    out only at its rated current, at low or none current output it have larger output
    voltage, that you have to measure. But lets say that you have a ideal transformer
    that have 40V output at all its current output up to its rated load, then the
    rectified and smothed output DC voltage is 40 times 1.41 = 56.4 minus the drop
    over the rectifier diodes, about 1.2 V = 55.2 Volts at zero current. But, due to the
    transformer is rising its output at low or zero output the voltage is going to be higher.
    Hope this solve some of your questions.

    //Staigen

  11. driver circuit for a n-channel MOSFET

    in Electronic Projects Design/Ideas

    Posted

    Hi again jc_lim3

    If you switch out your 74HC365 to a SN74LS07 it will work, at the same time
    remove the PNP transistor and the 2.2K and 10K resistors. connect the 4.7K
    resistor between 12V and the output of SN74LS07, also connect this to the
    mosfet gate. Maybee you should have a pair of complemantary driving
    transistors between the SN74LS07 and the mosfet's gate to increase the switching speed.

    //Staigen

  20. 4PDT to SPDT trick

    in Electronic Projects Design/Ideas

    Posted

    Hi again

    Maybee there is an another solution after all, i didn't thought of it at first!
    The smitt-trigger- action resistors, do they need to be that big? Is it possible
    to rise them to, lets say, 100K or so? Than the current throu the switches are
    reduced, and also the voltage. Also an another possibillity come to my mind,
    that we take later.

    //Staigen

  24. VHF AMPLIFIER (PLZ ANSWER)

    in Projects Q/A

    Posted

    Hi

    Isn't that one similar to one of the amps here on this site?
    You cant use a simple telescope antenna for DX-ing!
    The circuit seems to be a working circuit, but aso check the
    cirquit, that is similar, here at E-Lab.
    And use a good antenna, else you won't be hearing anything!


    //Staigen

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