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Low Earth Orbit
DIY Audio
Line Level Isolation Transformers
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<blockquote data-quote="Geoff Doane" data-source="post: 49328" data-attributes="member: 1155"><p>Update: Line Level Isolation Transformers</p><p></p><p>I made a decision on what to do with the grounds in the boxes. I've taken the audio grounds (pin 1 and S) to the chassis through a 0.01 µF capacitor. The value was chosen because it's virtually an open circuit at hum frequencies (60, 120 Hz), but is quite a low impedance in the RF range (1 MHz and up). And I had a bag of them lying around after another similar project.</p><p></p><p>GTD</p><p></p><p>[ATTACH]150275[/ATTACH]</p></blockquote><p></p>
[QUOTE="Geoff Doane, post: 49328, member: 1155"] Update: Line Level Isolation Transformers I made a decision on what to do with the grounds in the boxes. I've taken the audio grounds (pin 1 and S) to the chassis through a 0.01 µF capacitor. The value was chosen because it's virtually an open circuit at hum frequencies (60, 120 Hz), but is quite a low impedance in the RF range (1 MHz and up). And I had a bag of them lying around after another similar project. GTD [ATTACH=CONFIG]150275.vB5-legacyid=3292[/ATTACH] [/QUOTE]
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