Greetings to the collective.
For my next project I want to build a bench power supply and do away with this old switch mode AT computer PSU that i'm currently using.
The design I have in mind will be pretty beefy, giving a wide range of fixed and variable output voltages (i'm thinking from -50v up to +50) and deliver up to 5amps of current. if my estimates are right i'll need a 600va+ (100v * 5a + overhead) transformer to do the job well. Now i've had a look at some transformers in this range, and they're a little out of my price range. so now i'm considering building my own.
The specifications I need are as follows:
primary: 0-230v @ 50Hz Secondary: 60v-0-60v secondary output current max: 5A
I have an intermediate understanding of transformers, but have never actually built one, hence I am seeking advice from those with experience in this field. So where do I start? what type of core is best for this application? - I have a friend who's blasting off that toroids are best, but i'd like a second opinion, and what kind of wire to use for the primary and secondaries? what are good safety practices regarding insulation? Is this even a feasable project to undertake (moreso on the money side than timewise). Any other advice also greatly appreciated.