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Recent content by jumpman

  1. J

    Use a BT136 (TRIAC) and a LM555 to autoswitch AC

    Goldsmith: I don't know how much voltage should be used for the ioniser to fan the particles. I tried with 1.5 kV and they are moving.
  2. J

    Use a BT136 (TRIAC) and a LM555 to autoswitch AC

    The main application of an ioniser is to clean the air. What i want to do is to eliminate electrostatic forces of small particles. I don't know if it will work.
  3. J

    Use a BT136 (TRIAC) and a LM555 to autoswitch AC

    i read that 630V poly capacitors would do
  4. J

    Use a BT136 (TRIAC) and a LM555 to autoswitch AC

    Well i'd connect the Ioniser to the mains with a TRIAC in series. The ioniser is a Cockroft Walton Voltage Multiplier structure (i am puting 30 diodes 1N4007 and 30 * 10nF capacitors). How can i calculate the total current? The simulations gives me this "sinewave" for the Current.
  5. J

    Use a BT136 (TRIAC) and a LM555 to autoswitch AC

    Can i use the 2N6073A TRIAC?
  6. J

    Use a BT136 (TRIAC) and a LM555 to autoswitch AC

    Ok now i understand. I wasn't looking at the specs cause i saw this opto used in many application. Ill be more carefull. I have 2 more units of the MOC3020, but none of the MOC3021. ---------- Post added at 09:46 ---------- Previous post was at 09:44 ---------- Thank you for your reply! Ill...
  7. J

    Use a BT136 (TRIAC) and a LM555 to autoswitch AC

    Hello goldsmith. I never said i can't use square wave to control the TRIAC. I can. I just said that the control is not working because the opto doens't show any output....
  8. J

    Use a BT136 (TRIAC) and a LM555 to autoswitch AC

    This is the circuit with control. The objective is to automatically turn on and off the main circuit. The 555 generates a 2 Hz sq signal and the optocoupler should send it to the TRIAC gate pin. This would turn on and of my ioniser circuit.
  9. J

    Use a BT136 (TRIAC) and a LM555 to autoswitch AC

    Thank you =). The thing is that i can't see the digital signal after the optocoupler (the square signal only appears between the 555 and the opto). I'm testing it with the mains terminals open. How can i test this control part without connecting the mains?
  10. J

    Use a BT136 (TRIAC) and a LM555 to autoswitch AC

    Does anybody know if this is correct?
  11. J

    Use a BT136 (TRIAC) and a LM555 to autoswitch AC

    Hello Li_ereunpisan Is it something like this? https://1.bp.blogspot.com/_hBgprBskTTw/SNZrCk7uKuI/AAAAAAAAAUw/_haPDLiLG00/s1600-h/mainsSwitch.png
  12. J

    Use a BT136 (TRIAC) and a LM555 to autoswitch AC

    Good afternoon. I am trying to use a TRIAC to turn on and off the mains connection to a load. This load is directly connected to the mains (without a transformer) because it is a Cockroft Walton Ioniser (with capacitors and diodes). I'd like to use the TRIAC with this configuration: where...
  13. J

    how to have this DAC0800 configuration working...

    Hello, i am trying to have this circuit working. I have the Serial to Parallel Converter connected to the input pins of the DAC (SPI intead of just the parallel interface cause i prefer to use less pins of my microcontroller...). The DAC is supplied by a DC DC converter (5 V -> +-12 V). I have...

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