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Registered Member #3451
Joined: Sun Nov 28 2010, 11:13PM
Location: United States
Posts: 100
Hello, everyone. I'm doing a school science fair project involving transformers (I'd rather not share the specifics). I know that I need an AC source, but that's not all - I also need to be able to vary the frequency of the alternating current. I've been looking into function generators as a means to achieve this... Is this the right way to go? Would I simply be able to operate a step-up, standard, iron core power transformer using the output from a function generator? I would appreciate any help you can offer.
Registered Member #2463
Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546
You sure can. Use a solid state amplifier with about 50 watts output and connect a 6.3-120 volt transformer with the 6.3 volt windings to the 4 ohm output. This will give you 120 VAC from about 30-1000 Hz with about 20 watts to play with if you use a 5 amp transformer. This is how I powered resonant circuit demonstations with small lamps for years.
Registered Member #3451
Joined: Sun Nov 28 2010, 11:13PM
Location: United States
Posts: 100
Thank you for the quick reply, and I'm sorry for delaying mine. I've been really busy with school work. Anyway, I understand now, so thanks for your help.
Banned on 1/22/2011 for repeated rule violations after multiple warnings. Registered Member #3299
Joined: Sat Oct 09 2010, 08:11PM
Location: Bantown, USA
Posts: 220
uh oh, i'm smell something not working here, i built 4 transformers before i actually got 1 to work and that was an a boit that i rebuilt with the core, what are you using for a core and how mane turns of wire are you using for the primary because with low frequency ac you have to have LOTS of turns on the primary, and an insane amount of wire on the secondary for step up, it won't work other wise, just use high frequency then you can have like 5 turns on the primary and like 200 on the secondary for step up
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Transformer Science Fair Project
