Recent content by kk116

Thanks, I used big capacitors to bypass the dc high voltage. It got rid of most of the problem. I have voltage swing once in few period.

Thanks all the suggestions. Yes i used separate multimeter to read the voltage as well as i used oscilloscope to see the measurement. When i used the regular lab power supply, i was jumping to 17V. But i used 12V battery source and the RMS voltage was close to 12-13V. So considering +.-...

Hi, i am building an inverter 12VDC- 120VAC, 50 Hz with square wave as gate signal for MOSFET. Looks like my circuit works fine because i am getting square out -12 to 12 AC. Now i am using transformer to step up 12 VAC to 120 VAC. But i am experiencing some problems. But i am supplying...

Hi, I have build an 12VDC- 12VAC inverter using a square wave gate signal for my power MOSFETs. My output is perfect square wave and now i want to clear the harmonics except the fundamental. I am not sure how can i design the analog filter that can filter the harmonics except the...

Thanks again, I had tried that before but I had ref v to be 5v. I think it was a problem since my comparator triang wave had pk-pk of 2.6v I was able to vary now with ref v from 0-.7v. Thanks again for the information Now I have to drive MOSTETs with this pwm signal. Can I get heads up on how to...

I will use MOSFETs and i will use PWM to turn on or off. I need the 50% duty cycle to turn the mosfets on and off for same period. I am trying to make an inverter for 50 Hz. The example given in the data sheet gives the duty cycle of 45% but has max frequency. I want the PWM osc. frequency to be...

Thanks for the respond. TL494 is a Texas Instruments PWM control IC. Here is the datasheet link. http://focus.ti.com/docs/prod/folders/print/tl494.html Thanks.

Hi, I am trying to build an inverter and i am using Tl494 for my PWM, i am getting the right frequency but am not getting the 50% duty cycle. Can anyone suggest me any ideas on how to adjust the duty cycle for Tl494 Thanks. Krishna