Step-I: Converting 220v AC into 12v AC using Step Down Transformer Lastly, the output of the capacitor that is pure DC is given to voltage regulator IC 7812 and IC7912 which will regulate the output voltage at 12V and -12V DC, despite the change in input voltage.To filter out these ripples, capacitor of 2200 uf, 25V is used. The output of the rectifier circuit that is DC contains the ripples in the output voltage. Secondly, output of this transformer is given to the rectifier circuit, which will convert the ac supply into dc supply.Firstly, 220V AC is converted into 12V AC by using simple step-down (220V/12V) transformer.This can be achieved in simple three steps:

What am I doing wrong here? Can you even measure reactive power? Multisim? If I probe the inductors, I would basically be seeing the power dissipated by the winding resistance right? The components are ideal so that would explain why the reading are bouncing around from negative to positive pW.The objective of this project is to convert 220V AC supply in to +12V and -12v DC supply, that is why it is named Dual Power Supply as we get positive and negative 12v power supply at the same time. I got papp = 35.8mVA, px = 34.3mVAR, and pr = 10.17mW I attached a photo of the Multisim circuit and resistive result. I am to calculate reactive, resistive, and apparent power. Well, I'm not seeing what I was hoping to see. I just wanted to make sure that I'm doing it right, even though I'm very sure I am, so I decided to simulate and probe the circuit via Multisim I wanted to see the results with my own eyes. I know the book I'm using has many wrong answers in the back, but this one particular chapter has many wrong answers. I'm doing old homework again to prep myself for upcoming classes. Quote from: cvriv on July 30, 2016, 11:18:19 am I'm having some trouble here.

Power in multisim 12