I have stepped back from the inverter and am now working on this.
I got it working ok,no smoke but I am trying to relate the answers that I get from the equation, f= 1/RC*4.4, with what I measure and see.
I used 2 different combinations of R and C with the following results.
1) R=2977 ohms, C=100 uf. When I measure the OSC freq it measures 1.32hz and I can see the light blinking at a bit faster than once a second. The Q and Q* lights are blinking at roughly 1/2 the speed of OSC. The result of the equation yielded .007634287. How does that equate to what i measure and observe ?
2) R=47k, C=100uf. Audioguru recommended these values to get close to 50hz. The ORC measures at 97hz and the lights are on solid. I guess to be expected if 97hz. The result of the equation yielded .47846. How does this equate to 50hz ?
Thanks
George KG5TKY
I got it working ok,no smoke but I am trying to relate the answers that I get from the equation, f= 1/RC*4.4, with what I measure and see.
I used 2 different combinations of R and C with the following results.
1) R=2977 ohms, C=100 uf. When I measure the OSC freq it measures 1.32hz and I can see the light blinking at a bit faster than once a second. The Q and Q* lights are blinking at roughly 1/2 the speed of OSC. The result of the equation yielded .007634287. How does that equate to what i measure and observe ?
2) R=47k, C=100uf. Audioguru recommended these values to get close to 50hz. The ORC measures at 97hz and the lights are on solid. I guess to be expected if 97hz. The result of the equation yielded .47846. How does this equate to 50hz ?
Thanks
George KG5TKY