Discussing a IC555 and IC4017 Inverter Circuit

Please read the previous post for continuation...

HI Swagatam, just updating you. I just double and triple checked my layout on the PCB against your schematic ,including the New modifications, and it's perfect.
Also one other observation, now  at the NEW Collector Junction Outputs of TR1 and TR2 there is + 8.40V.  Before the voltage at the Diode Junctions was only + 5.95V.
Its up to you brother.!! lol
Thanks again
Ali
Hi Ali,

Voltages at different points are not that critical as long as the oscillator is working.

 just check whether your oscillator is actually working or not and producing the required clocks...........remember if there's no clock, the output of the 4017 IC will get locked to a particular point blowing off the relevant transistors.

Please confirm your output stage and the transformer by connecting it back to your square wave design...that may help sorting out the differences.

Regards.
Hi Swagatam, yes  I removed the circuit from the inverter and checked the output of the oscillator, and it is working properly, getting a frequency of 1.084 KHz and the final output at your circuit is 60.007 Hz.
 So there is a clock signal. I know that the square wave circuit works and the output stage works.
I reinstalled my other Square wave circuit that runs at 60Hz and the inverter works, making 130V 60Hz at the gate of each Mosfet there is + 6.40 V and a perfect square wave.
Since Re-winding my transformer with 12 Gauge it actually runs much quieter, just a slight hum.
 I'm starting to run out of Mosfets, blownup 8 so far. I hope we can figure this out !
Sincerely Ali
Hi Ali,

Why don't you try the circuit using transistors as described in my article...I think transistors are more flexible and predictable than MOSFETs and are also much cheaper.

Regards.
Hi Swagatam, I don't have any Transistors and my  electronic budget is out of money. So I have to make do with what I have or can get as free samples!
 This is weird why your circuit won't work with my setup. It should !
 I have attached another design circuit using the 4017 and it is driving Mosfets. I don't know if it works though. There has to be a way to get your circuit to work with with my setup. I spent too many hours proto boarding and building it to ths final PCB to just give up on it. There has to be a way ,without  changing my whole setup. The Mosfets that I'm using have very High Amp output and Low On Resistance, they are very efficient.
We occasionally get Brown Outs where I live and it would be nice to be able to Run the TV without any fear of damage because of the lousy Square Wave.
Please Swagatam, I now if you give this a chance you will figure out a way, your an Electronic Engineer , You Can Do It !!   I have faith in you brother.
Sincerely  Ali

Continued HERE,

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