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Toroid or molded inductor in low voltage tank?
On Tue, 11 Jul 2006 15:21:51 +0100, wrote:
On Tue, 11 Jul 2006 13:02:48 +0100, "John Hague" wrote: On Tue, 11 Jul 2006 08:29:05 +0100, Roy Lewallen wrote: Ben Jackson wrote: . . . Anyone have any tips for securing fine-wire toroids in Ugly/Manhattan construction? A dab of hot melt glue or RTV. Or a Nylon screw through the middle. Or a couple of holes in the board and a cable tie. The only thing to avoid is laying it down flat on a solid copper plane. Roy Lewallen, W7EL Roy Excuse my ignorance, but what is the problem with laying a toroid down on a solid copper plane? I thought the magnetic field was contained within the toroid and thus minimised external effects. I have completed a couple of projects recently with some of the inductors like that and didn't notice any real problem. Mind you, I guess they might have performed better if not mounted that way ) Twofold. One is added capacitance across the windings and secondary is the proximitry of a conductor to the small field around the wire(s) that are not in direct contact with the toroid. Allison Best 73 John, G4GOY Allison Thanks for the info. I'll watch how I mount my toroids in future. Best 73 John, G4GOY -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ |
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