hi,
The shield is near pointless given the toroids lower field in the first place.
Two 115V primaries in series give you a 230v primary, I assume TIWYM.
rgds, sreten.
Sort of ideal, filters shunt the hash to earth whereas a lossy transformer just loses it in the gap so to speak. Also bear in mind have you actually had any problems with clicks and noises previously anyway?
No problems so far, but the old, buzzing transformer is an EI type, and I'd prefer toroidal to avoid any hum.
Toroids can hum and buzz and shake your chassis, much the same as EI.
It's the quality of manufacture that mostly determines the noise from a transformer.
The main exception that I am aware of is non symmetrical AC mains' waveform through EI or Toroid. The toroid does benefit from the addition of a DC blocking Network in the primary feed.
Right, I've gone for a line filter and toroidal transformer combination. And a switch, because unplugging was getting annoying. And a multimeter because this one's a pile of crap 🙂.
Disaster! The new multimeter (that came along with a shiny new 15-0-15 transformer) has revealed that the old transformer is in fact 12-0-12.
I can't use a simple potential divider, can I? I've got to buy another transformer?
I can't use a simple potential divider, can I? I've got to buy another transformer?
Yes, new transformer is your only option.
The 15-0-15 one will come in for an overkill pre-amp or similar, or you may be able to return it?
Must be a teensy amp in those speakers!
The 15-0-15 one will come in for an overkill pre-amp or similar, or you may be able to return it?
Must be a teensy amp in those speakers!
Damn it. Reckon Farnell will take it back?
I have to set my software audio level to around 5%, and the quality is awesome =).
I have to set my software audio level to around 5%, and the quality is awesome =).
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