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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Isolation Transformer and switching transients posted by fred76 on August 9, 2005 at 11:02:26:
(1) It's likely that your light circuit makes a loop somewhere, I mean 2 wires carrying current not laid out close to each other, so, when switching, the di/dt causes a strong RF magnetic pulse though the loop area. To avoid recabling your lights, use a RC damper in parallel with the switch, as other people advised you.
An important concern here: or buy a built RC damper, or DIY your own with a 100ohm resistor and a 0.1 uF cap, but, in the later case THIS CAP SHALL BE AN X TYPE, I REPEAT THIS CAP SHALL BE AN X TYPE: SHALL BE, NOT SHOULD BE. Would I have to insist more?(2) to get rid of your overvoltage, i drawed a little schematic you can download here (see link below). Its main advantage is that using a 100W transformer, you can fix mains rated at several KW. And safely, and without resorting to quantum a**holes, oh, sorry, dots.
The schematics are drawn for a 127V mains, because, since you worry for those feable 10V, I guess you live in a low mains continent.
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Follow Ups
- Re: Isolation Transformer and switching transients - Jacques 12:10:52 08/10/05 (1)
- Re: Isolation Transformer and switching transients - fred76 17:50:13 08/10/05 (0)
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