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pwm in series

magnus2112
magnus2112 over 10 years ago

So, am currently building a SSTC(solid state tesla coil), and i am trying to get the coil to pulse at a high frequency.

I found this pwm module that pulses at a high frequency (Power Pulse Modulator - PWM-OCXi v2.1), but i have a lot of simple high voltage pwm modules laying around, and i was wonderig:

If i run them in series, can i obtain a higher frequency?

What i mean, is that, if i pwm the power supply to the next pwm module, wil i obtain a higher frequency?

 

Thanks for eny help image

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  • jw0752
    jw0752 over 10 years ago

    Hi Magnus,

    I suspect the each module will have its own output, controlled by its own circuitry. If you use one module as the power supply for another module you will find that it either works but not as well as having the correct power supply or it doesn't work at all. The frequency of the output should not be affected.

    John

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  • jw0752
    jw0752 over 10 years ago

    Hi Magnus,

    I suspect the each module will have its own output, controlled by its own circuitry. If you use one module as the power supply for another module you will find that it either works but not as well as having the correct power supply or it doesn't work at all. The frequency of the output should not be affected.

    John

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  • magnus2112
    magnus2112 over 10 years ago in reply to jw0752

    Thanks the reply John image

    I investigated  if it was posible to change a pwm module to give me a higher frequency, and i stumbled upon a solution that i will use.

    If i switch the capacitor on a 555 pwm module, i supposedly change the  frequency. So,i think that will be the solution i will use.

    Magnus

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  • jw0752
    jw0752 over 10 years ago in reply to magnus2112

    Hi Magnus,

    Here is a data sheet on the 555 timers:

     

    http://www.farnell.com/datasheets/1727559.pdf

     

    There are some suggestions and formulas for changing the frequency of the PWM circuit. In most cases there are 2 resistors and one cap that will effect the frequency and duty cycle of this circuit.

     

    John

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