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DIY For Audio
FirstWatt M2 Clone Amplifier Build
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<blockquote data-quote="pwatts" data-source="post: 1101016" data-attributes="member: 146"><p>The leakage is caused by capacitors (small nF range typically) that are intentionally placed between the output(s) and input, for a three-terminal device it will be Protective Earth. This is done for safety and EMI - the larger the capacitor the better for EMI, but at the expense of larger leakage currents that can become hazardous and there are different regulations for what is allowed for commercial, industrial, medical etc. usages.</p><p>Placing two of these devices in series can cause serious ground loops, and sometimes the reason why RCA inputs are overly noise in designs with sensitive input stages. This was reported by [member=22308]sajunky[/member] while he still contributed here on the Topping A90 thread, and one of the only times I ever agreed with him.</p></blockquote><p></p>
[QUOTE="pwatts, post: 1101016, member: 146"] The leakage is caused by capacitors (small nF range typically) that are intentionally placed between the output(s) and input, for a three-terminal device it will be Protective Earth. This is done for safety and EMI - the larger the capacitor the better for EMI, but at the expense of larger leakage currents that can become hazardous and there are different regulations for what is allowed for commercial, industrial, medical etc. usages. Placing two of these devices in series can cause serious ground loops, and sometimes the reason why RCA inputs are overly noise in designs with sensitive input stages. This was reported by [member=22308]sajunky[/member] while he still contributed here on the Topping A90 thread, and one of the only times I ever agreed with him. [/QUOTE]
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DIY & Tutorials
DIY For Audio
FirstWatt M2 Clone Amplifier Build
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