Recent content by kachew

  1. K

    12 V DC to a 220V AC Inverter AMplfier Design

    hi au, how about the voltage spikes caps near the transformer? izzit the ceramic type too?
  2. K

    12 V DC to a 220V AC Inverter AMplfier Design

    hi, the capacitors for the voltage spikes is AC caps or Dc caps? thanks
  3. K

    12 V DC to a 220V AC Inverter AMplfier Design

    hi au, how do u choose, how u know what value of the resistors and capcitors for voltage spikes? the value of the capacitors and zener diode across the power supply of the ic?  any formulas? thanks
  4. K

    12 V DC to a 220V AC Inverter AMplfier Design

    hi au, is this the configuration u meant?
  5. K

    12 V DC to a 220V AC Inverter AMplfier Design

    Dear Au, the ceramic disc capacitor is still there....which is parallel with the zener diode ;D ;D
  6. K

    12 V DC to a 220V AC Inverter AMplfier Design

    dear au, is this what u mean? across means parallel?
  7. K

    12 V DC to a 220V AC Inverter AMplfier Design

    hi au, the CD 4047 ic is burning at 1st it can be used for generating pulse but later when i turn off the power supply from the lab...it seems burn and i use OSC to check the waveform and there is only noise no longer have any square wave in it...the DC supply in is 12 volt but after i...
  8. K

    12 V DC to a 220V AC Inverter AMplfier Design

    dear AU , yup i know...but the osc result doesnt have the required result....i tried many times....at last i will get the same square wave form....but this is ok... the main things is the ic burn many times....although i have use diff grounding and bigger size wire....can u recommend me a...
  9. K

    12 V DC to a 220V AC Inverter AMplfier Design

    dear au, ooo can u recommend me a voltage regulator? regulate to the ic.....so that the ic will be protected from being burn....thanks
  10. K

    12 V DC to a 220V AC Inverter AMplfier Design

    dear au, yes i have separated the ic wires to the battery connection and the heavy wires from mosfet to the ground and the to battery....but the problem is the ic need to be connected to the mosfet which acts as a wave generator to switch on and off for the mosfet....then ground of the mosfet...
  11. K

    12 V DC to a 220V AC Inverter AMplfier Design

    dear au, about the grounding...can i separate the grounding as showed in the schematic.... i mean the mosfets has its own grounding and the ic's has it own groundin....or both mosfet and ic need to hav same grounding...i means is connected to same  ground...just wan to confirm b4 i burns...
  12. K

    12 V DC to a 220V AC Inverter AMplfier Design

    dear au, do i still need to add on the series resistor to the mosfet? or shouldnt i? thanks...if yes then i need to drill holes on my pcb board go lab to retry thanks
  13. K

    12 V DC to a 220V AC Inverter AMplfier Design

    dear Au, if the voltage from the mosfet is lower than the primary winding of the transformer for example....the voltage from the mosfet is approximately 5V then the rating of the transformer is 8V....will it have enough power to power the transformer? or it depends on the rating of the mosfet...
  14. K

    12 V DC to a 220V AC Inverter AMplfier Design

    dear au, i have use the same connection which the updated by you...but still no avail, but i tried the cd4047 output from both pin 11, and and 10 and the output is inverted...but when fed into the CD4001...the output seems to be havin a square wave....how could this possible ? i still cant...
  15. K

    12 V DC to a 220V AC Inverter AMplfier Design

    dear au, then the 2 capacitors to be used is metalized plastic type? since there are no 0.22uF capacitors in the circuit. so 50Hz of frequency doesnt neccessary to put the resistor in front of the mosfet? since the osc frequency in this circuit is just 50Hz.... the capacitors and resistors...
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