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Recent content by zouzanda

  1. Z

    transfer an aps to a ups

    hello again, sorry for the unclear post .the thing is in our country when you say APS everyone knows what we are talking about. i will try explaining myself aps=is a dc to ac inverter it could be square or sine wave.in this case it is a sine wave . it is called an aps because when electricity is...
  2. Z

    transfer an aps to a ups

    does anyone knows how to transfer a aps to a ups.i know i need to use zero crossing and i know how to do the circuit by using an opto isolator. the problem is how to read it using a pic and how to switch over. thank you in advance for ur help:bang:
  3. Z

    PC fan speed adjustment options.

    hope this skematic will help you. you just need to program the mcu
  4. Z

    [SOLVED] positive zero crossing

    ok thank you guys .the problem is that i need to do all that using hardware not software my micro need to read only if it crossed the zero or not and i cannot use interrupt in that case. anyone has an idea?
  5. Z

    [SOLVED] positive zero crossing

    hello please i need a help from anyone.my problem is that i need to detect with a pic the zero crossing in yellow not in red.how can i do that?? thank you in advance
  6. Z

    16F676 BASED 90-290 VAC 5 STEP AUTOMATIC DIGITAL STABLIZER

    i can provide u a 5 step stablizer circuit +pcb +program with an aditional protection relay that protects ur output incase one of the relays went wrong and gave u high voltage on the output and by the way i've been selling this design for over 3 years so 100% working but nothing is for free
  7. Z

    [SOLVED] Pic 16f876a Pure Sinewave inverter

    DOES ANYONE KNOW IF WE can use a ferrit trans instead of this one and if yes what should be the turns
  8. Z

    [SOLVED] Pic 16f876a Pure Sinewave inverter

    no man there is none :S im sure its about timers i just wanna know if somebody solved the problem before
  9. Z

    [SOLVED] Pic 16f876a Pure Sinewave inverter

    hello guys im back again :P finally i made my invertor work :D but i need to know if someone knows how to change the frequency in the program i need it to be exactly 50hz im getting 47hz does anyone know how
  10. Z

    [SOLVED] Pic 16f876a Pure Sinewave inverter

    for one simple reason because this design is used in professional invertors anyways ill try to see how i can remove this problem and ill get to u soon
  11. Z

    [SOLVED] Pic 16f876a Pure Sinewave inverter

    this is without load and with load its the same with higher amplitude
  12. Z

    [SOLVED] Pic 16f876a Pure Sinewave inverter

    as u can see :S the 12V dc contains a shitty AC signal but i cant explain y ?? my pcb in the other pic u can see it the traces are wide and the 2 capacitors are 27000UF each
  13. Z

    [SOLVED] Pic 16f876a Pure Sinewave inverter

    check these videos out cz im feed up of the same answers one is vout vs A/B the other is cur_l vs Vout
  14. Z

    [SOLVED] Pic 16f876a Pure Sinewave inverter

    curr_h V_out and A/B are in phase thats first second i wrote in the previous post wrong its 2000/2 and still nothing is changing
  15. Z

    [SOLVED] Pic 16f876a Pure Sinewave inverter

    hello guys i bought 3 current transformers today and i tried them all and i even built one as california said 1000/2 turns still no change :S
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