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Recent content by dumi

  1. D

    240v ac to 12v ac without a use of the transformer

    Hi, can anyone help me with a circuit diagram that produce 12v ac from the 230 V ac?
  2. D

    zero-crossing detection

    I'm looking at, how did they come to calculate the whole of this components
  3. D

    zero-crossing detection

    hi all, I just want to know how did they selected the components as well as the components values ,as showed in the diagram for the zero crossing.
  4. D

    ac light dimmer light using triac and triac

    Hi I need you help, I have made 3 of these circuit to run a 3-phase induction motor so I want to run them using a single variable resistor,so I want to know which variable resistor can I use?
  5. D

    ac light dimmer light using triac and triac

    ohk,it just that I want to make a living,since south Africa is about to focus on renewable energy,so I want to make them and sell them.
  6. D

    ac light dimmer light using triac and triac

    Ya,but I still have to learn a lot,I still interested in designing and building a DC to AC inverted.
  7. D

    ac light dimmer light using triac and triac

    KerimF,U are a genius. Its working I just remove that 10kOhm on R13 in your circuit and it worked and added LED in series with 1.8kOhm resistor. I don't know how can I thank u,i just wish if u were here in South Africa. God Bless u.
  8. D

    ac light dimmer light using triac and triac

    will do.this my circuit.
  9. D

    ac light dimmer light using triac and triac

    i will have to sit down and look at my circuit it really worries me.
  10. D

    ac light dimmer light using triac and triac

    no I have managed to get your pic that you have sent me.
  11. D

    ac light dimmer light using triac and triac

    yes I am also using windows 7,everything is working fine. - - - Updated - - - Is your explorer IE9? I run it on Windows 7 (home basic) yes it is working.
  12. D

    ac light dimmer light using triac and triac

    No, I have manage to open it,it does open.i can see its working. the output of my Vcc is now read 6V,i think something is not going okay with my circuit. - - - Updated - - - i see on R5 you use 12kohm restistor and me i am using 8.2kohm - - - Updated - - - tell me do you have proteus program...
  13. D

    ac light dimmer light using triac and triac

    Yes,I have LM 7805
  14. D

    ac light dimmer light using triac and triac

    i will check my transformer because when I test the voltage on my bridge is not giving me 12V - - - Updated - - - I will do.
  15. D

    ac light dimmer light using triac and triac

    I suspect that something is not right, but what confuses me is that all three circuit works the same I think it could be over voltage that a may damage the components.When you do measurement to your circuit do you get the same values that I get?

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