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Low Earth Orbit
DIY Audio
Line Level Isolation Transformers
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<blockquote data-quote="Frank Koenig" data-source="post: 49383" data-attributes="member: 416"><p>Re: Line Level Isolation Transformers</p><p></p><p></p><p></p><p>TVSs are indeed shunt mode. They have a high impedance until some voltage threshold is exceeded, at which point they break down and present a low impedance for a short while. I was thinking of a two terminal device connected between the grounds that would simply protect the transformer from breakdown between the windings. And this is assuming that clamping the grounds together will keep the signal lines together, so far as spikes are concerned. Maybe one should forget about the grounds and put TVSs between the signal lines on both sides. And if you've got 500V spikes coming down your audio cables, there may be bigger problems. Like I said, I'm probably trying to solve a problem that doesn't exist. There's just such a strong temptation to want to put SOMETHING between the grounds :razz: Stuff to think about...</p><p></p><p>--Frank</p></blockquote><p></p>
[QUOTE="Frank Koenig, post: 49383, member: 416"] Re: Line Level Isolation Transformers TVSs are indeed shunt mode. They have a high impedance until some voltage threshold is exceeded, at which point they break down and present a low impedance for a short while. I was thinking of a two terminal device connected between the grounds that would simply protect the transformer from breakdown between the windings. And this is assuming that clamping the grounds together will keep the signal lines together, so far as spikes are concerned. Maybe one should forget about the grounds and put TVSs between the signal lines on both sides. And if you've got 500V spikes coming down your audio cables, there may be bigger problems. Like I said, I'm probably trying to solve a problem that doesn't exist. There's just such a strong temptation to want to put SOMETHING between the grounds :razz: Stuff to think about... --Frank [/QUOTE]
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