What are my A/C options?

I have 240v ac supplying a transformer which is rated to produce 24v dc. The current output is 33v dc what are my options?

• Answer:

  Do you mean you require a 33v dc out put while you get 24v, or do you mean your transformer that is supposed to produce 24v, but produces 33v? For the first case: First of all, transformers could be never operated on DC.It needs alternating current and varying magnetic flux to set up the induction. Now the output is 33v DC, but your output is 24v DC.If you want to step it up to 33v, first of all you have to convert it to AC using converter circuit, then step it in 33/24 ratio and then invert it again back to DC.It requires a hell lot of electronic auxiliaries.Instead replace transformer with proper rating. For Second Case: May be the input voltage is 330v instead of 240V.Transformers are really robust devices and some could handle fluctuations up to +/- 20 -30%(generally it's 10%), but the risk is not worth a try.It would reduce the longevity of the transformer. Check if the input voltage is high.If it's High, use a Variac to lower it to 240 first and then connect the output of the Variac to the transformer. If the case is something different, get back to me through comments and we'll discuss further.