Big Developments In Toroids
This was a headline 50 years ago this year, when the September 7th 1960 edition of Electronics Weekly pointed up the
The story starts:
'Big developments are taking place in toroids, with
'States: Mr Brown: "In many fields, toroids offer performance unapproached by other types and, in many instances, are now price competitive with C-core transformers."'
The story concludes:
'Production capacity has been increased ten times in the last three years. This is now being doubled to meet overseas demand. Main demand is from the
I remember the Cambridge Audio amplifiers had toroidal transformers... credited for their ultra-slim design and low interference field of the transformer. They were good amps but didn't seem to do as well as they should in the market. Any idea what happened to Cambridge Audio, the English company that is? Did they just fall victim to the onslaught of mass marketed Japanese stuff?
I still have my Cambridge R50 speakers (90lbs each) hooked up to my Radford HD 250 amp and still producing sweet sounds... after 30 years now. Geez, I'm getting old - maybe it's just that my ears have gone.
I'm told by a colleague that he bought a speaker from Cambridge Audio six weeks ago, Scunnerous, so their skills are not lost
Cambridge Audio is still going strong (just try Googling them). My hi-fi set up is mostly their equipment - still using toroids for low-profile and low stray magnetic field.
Thanks, Dave
Thanks and glad to hear that Cambridge Audio is still alive. They don't seem to have a modern equivalent to my R50s but they are big and heavy and don't have exotic driver materials so maybe don't appeal to the current fashion.