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100V switch

Discussion in 'General Electronics Discussion' started by stari, Nov 17, 2016.

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  1. stari

    stari

    18
    0
    Oct 24, 2015
    Hi,
    i have 100V output from converter and i wish to switch tis line with cca. 3V from microcontroller. I have driver, yes, but with poor results. Can anybody sugest how to make such a switch. !00V sould be switced on and off with frequency from 10 to 100 Hz.
    upload_2016-11-17_23-23-3.png
     
  2. sundy

    sundy

    64
    5
    Aug 5, 2016
    stari likes this.
  3. tedstruk

    tedstruk

    475
    7
    Jan 7, 2012
    you need down converters with relays between them. Frankly they say its alot of money and work to go to, when a seperate converter is available for lower volts. easier to install a second converter.
     
  4. AnalogKid

    AnalogKid

    2,482
    715
    Jun 10, 2015
    Your question and schematic are missing critical information.
    Where on the schematic is the 100 V input?
    Where on the schematic is the 100 V output?
    Which signal on the schematic is the one that switches the 100 V on and off?
    What does "cca. 3v" mean?

    ak
     
  5. stari

    stari

    18
    0
    Oct 24, 2015
    Hi
    100v is generated with Q1 and output is on D1*C1.
    PWM controls the output voltage.
    CTRL signal switches 100V on/off.
    3V is Vcc.
    So simple.
     
  6. stari

    stari

    18
    0
    Oct 24, 2015
  7. AnalogKid

    AnalogKid

    2,482
    715
    Jun 10, 2015
    What are the "poor results"? In what way does the so simple circuit not perform adequately or correctly?

    ak
     
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