View Full Version : stepup and step down transformers


fireboy81
12-28-07, 05:44 PM
hey guys just wondering how they work have i rough idea that if two wires are the same thickness and one of them is wrapped ten times on one side and the other 100 then ten times then voltage i think? can someone explain does this dilute the power or concentrate it if i do this so like if say i have a 1 amp power from a 1.5 wolt battery and put it through a step up transformer does it increase voltage and amp out put or just voltage sorry to be a silly nuisance

Boris2
12-28-07, 06:05 PM
http://sound.westhost.com/xfmr.htm

all you ever wanted to know and more

:-)

saudade
12-31-07, 11:56 AM
Transformers only change voltage. To change current, you need a current transformer. And you are correct with your example. It all depends on the ratio. Transformers work on the principle of mutual inductance.

MacGyver1968
12-31-07, 12:35 PM
First off, transformers only work with alternating current, so a dc battery won't work with them. Power also stays the same on both sides of the transformer. If you double the voltage, the ampacity drops by half and vice versa. So if you have 10 Vac with 2 amps capacity on one side of a 2:1 step up transformer, you will have 20 Vac with one amp on the other side. Does that make sense?

fireboy81
12-31-07, 12:57 PM
thanks macguyver what i was thinking my friend thanks saudade thanks boris2