I'm working on a simple AC DC power supply, but am running into a bit of a problem in regards to the transformer. I know that I am going to have a 1.4V drop across the diodes in a bridge rectifier so I should need a secondary voltage of this plus my desired output voltage all divided by 1.414. I've realized that getting the right output voltage is not as simple as getting the right turns ratio according to this formula and then using a capacitor resistor combination to smooth out my output into a output with a small ripple. In saying that, my problem is that I know my load resistor is going to affect this secondary voltage but I'm not exactly sure how the two relate. After doing some research it seems that it will be different for each transformer based on the load regulation. How do I know what load resistance I need in order to get the desired output voltage if it appears to be different for each type of transformer?