"The Natural Philosopher" wrote in message
...

If not dimming, I recommend toroids - less radio interference. In all
cases buy decemnt ones. I got all my klit from Newey and Eyre and their
oroids have been good,

If using toroids make sure they are reasonably well matched to the load. If
the transformer can supply too much power the voltage will rise and blow
bulbs on a regular basis.