How to transform 17 volts into 32 volts.

[furqankaimkhani]

I am an electronic engineering student. i have a transformer of 220 to 17 volt. Now i wish to achieve 32 volts DC. i know that i should rectify and filter. But, what value of capacitors in filters will let me have 32 volts magically out of 17 volts.
Muhammad Furqan.

 

[Archerman]

You will not get 32V with a normal rectify and filter circuit from the 17V. You need to make use of a Voltage doubler circuit. It will look something like this :

 

[alexan_e]

if you have 17v AC RMS then if you use a full wave rectifier with a capacitor you will get a little less than 17*1.414=24v DC
d you want to convert this to a higher voltage you need a step up circuit for example MC34063

http://www.intusoft.com/onsemipdfs/MC34063A-D.PDF
MC34063A design tool

Alex