Re: help replacing an old ac power transformer.



Hey John,

Thanks. Yeah it is a color enlarger with the bulbs costing
$30/each...yup...I am posting the picture to the
alt.binaries.schematics.electronic group after this message.

The picture is of the old transformer on left and the new on right
along with the box that houses the transformer and a power switch.
Very basic little box.

The specs of the new one are:

12.6v AC, 3-amp
center-tapped secondary

Its quite possible the new one I bought is just plain the wrong
one...Maybe not enough voltage?

I do have a digital multimeter. But I'm a little sketchy on playing
with AC unless I know exactly how to measure it safely. And (where) to
measure :)

I am not sure there are electronics between the transformer and the
bulb. I can take it apart to check, though.

Thanks!

.



Relevant Pages

  • Re: help replacing an old ac power transformer.
    ... Yeah it is a color enlarger with the bulbs costing ... The picture is of the old transformer on left and the new on right ...
    (sci.electronics.design)
  • Re: SONY KV-32S40 32" Trinitron screen distortion bowtie
    ... Then, after the TV warms up, the problem no longer ... but the picture never comes on. ... resoldering, I found a spot that looked like sony spilled some solder ... I pulled on that thick red wire that goes from this transformer ...
    (sci.electronics.repair)
  • Re: Silencing a humming transformer ( + ACDC adaptor that blew )
    ... I posted some pictures of the transformer, I can't really get to it.. ... Here is a picture of another device I once had. ... Whereas on the power supply card that I linked to, the wires are sort ...
    (sci.electronics.repair)
  • Re: help replacing an old ac power transformer.
    ... > The picture is of the old transformer on left and the new on right ... > along with the box that houses the transformer and a power switch. ... Well 12.6V is certainly not going to light up a 27V bulb! ... Are you only replacing it because of the buzzing, ...
    (sci.electronics.design)
  • Re: Crappy mains adapters & crappy designs
    ... I posted a picture of a disassembled adapter here: ... Looking at these I suspect they are using a series cap to reduce the voltage to the transformer. ... what's the 400V electrolytic capacitor for then? ...
    (sci.electronics.design)