Hello Guest it is October 21, 2019, 07:22:37 PM

Author Topic: Transformer question  (Read 2169 times)

0 Members and 1 Guest are viewing this topic.

Transformer question
« on: March 01, 2009, 09:19:59 PM »
Hello,
  This transformer.
115v in at 380 term, 76 out.
115v in at 460 term, 57 out.
Does the 200VA on the label mean 200/76 would be 2.63A ?
And 200/57=3.5A ?
Not sure, ::)
Thanks,
RC
Re: Transformer question
« Reply #1 on: March 01, 2009, 10:21:52 PM »
RC,

I get different results:

Using the 380V terminals as inputs, the output is: 220 * (115 / 380) = 66.6V @ 3.0A
Using the 380V terminals as inputs, the output is: 220 * (115 / 460) = 55.0V @3.6A

Keep in mind, those are RMS voltages, so using this in a DC supply will give you around 94V or 78V.

Regards,
Ray L.
Regards,
Ray L.
Re: Transformer question
« Reply #2 on: March 02, 2009, 06:08:48 AM »
Thanks Ray,
much appreciated,
RC