maybe the answer is that simple: Duty varies over the 50Hz sine, as well as the other figures like "V_ripple". should be a function of Vin. So the 2nd picture should be closer to the truth more often. So peak V_ripple has to be calced some special way in this case i guess. Just my 2pennies, im no expert
I've been using the 324Vdc value for all of my calculations. Thinking about it more thou without a input capacitor to smooth it out, the average voltage may be a more realistic value.
What calculator are you using? I'd love to compare it to the excel file I've made to calculate all of this
Than i do the same. I guess its a learning by doing thing.
http://www.daycounter.com/Calculators/Switching-Converter-Calculator.phtml
Is 10% Current Ripple too much ?
Its 230V AC here and i guess the bridge drops a bit or my multimeter is a bit off or both ? :wink:
When i put then a cap on the DC output i measured 324V DC without cap 214V.
So are there any updates on this design? Have you been using it?
This is pretty much what I was thinking of doing years ago, and its cool to come across someone actually DOING it now. (or atleast 7 months ago...)