On 27/11/16 14:22, Roger Hayter wrote:
Scott wrote:

On Sat, 26 Nov 2016 22:57:58 +0000, (Roger Hayter)
wrote:

[snip]

If they are toroidal mains transformers (with no switched electronic
supply) they will be perfectly happy with the LEDs. The problem is that
if the transformers produce 12V AC and the LEDs require 12V DC the LEDs
won't work.

I have now looked at the transformers. They are very heavy, round and
5 inches in diameter. I'm assuming there are no electronics involved
but I could look inside if you could tell me what to look for.

Assuming the output is AC I should think it virtually certain that there
are no active electronic parts. There could be some interference
suppression components but they will come to no harm. Low load will do
no harm to the transformers. As someone said, the low load voltage
might be a little high, but probably not enough to worry about.

The ones I have, have but one thing that has gone wrong (excepting the
mouse that chewed through the mains cable ) and that is a thermal
cutout, as they do overheat if buried in insulation. On one of these,
instead of coming back on, it stayed dead permanently.



--
Religion is regarded by the common people as true, by the wise as
foolish, and by the rulers as useful.

(Seneca the Younger, 65 AD)