Fairly straightforward, and fairly easy to build. You have to watch for a few resistors that are 1/2 watt, some capacitors have strange terminology, and some of the symbols are explained in the text portion. So, be sure to review the article if you want to build this one.
I currently have this one running on the breadboard.
The design calls for a 12-0-12, 5 Amp transformer, but I only have a 4 Amp transformer, so mine is not quite to specifications. However, it still works. The Rt is adjustable if it is replaced with a preset or potentiometer. That adjustment was necessary (for me), due to my 4 Amp transformer. At any rate, the final result was that I was able to adjust to the 60 Hz frequency using a 4 Amp transformer and adjusting Rt as a potentiometer. (The 4 Amp transformer requires less resistance at Rt.)
The Pulse Width Modulation (PWM) automatically adjusts for powering devices with various power needs. I currently have it running from the breadboard, but I suspect I may build it with two outlets, or otherwise I would suspect that I should be able to use an extension cord with lights of various voltages.
Let me see, the only drawback of a circuit this straightforward is that the waveform is not a sine wave form, nor a modified sine wave form. Which means, it may be a bit harsh to use on sensitive electronic devices. I would only use it for lights.
Still, I am short on emergency lighting, and need some practice adding things like a fan and some circuit protection. So, I intend to build a finished version of this little one, simply for those reasons.
Nicely done, Khaleel. I suspect this would be a quick build for most folks. This could be useful for emergency lighting, or for lighting the workshop. Thanks.