#16
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Typically not, but in any case there's not enough current to kill you. Probably not enough current from most external power supplies either, but I tend to err on the side of caution.
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Patrick 2012 Martin HD-28V 1984 Martin Shenandoah D-2832 2018 Gretsch G5420TG Oscar Schmidt Autoharp, unknown vintage ToneDexter Bugera V22 Infinium |
#17
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The place I live at uses UK plugs so I'll try figure something similar out, thanks again for letting me know how to go about it!
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#18
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Quote:
Everything that has been said here about ground loops should, AFAIK, apply to UK and European electrical systems. I would suspect that basic circuit polarity testers and ground loop hum eliminators are available there as well. A little about ground loops, which are a specific cause of hum (60Hz in the US and Canada, 50Hz in the UK and Europe). Current should only flow on the "hot" and "neutral" lines, not on the ground or earth line. When current is flowing on the ground it is usually the result of an issue with the wiring itself or some other device on the circuit causing current to flow on the ground. The best solution to the problem of ground loops is to fix whatever is causing the problem. A ground loop hum eliminator is the next best thing, and likely the only thing you can do when plugging in to an electrical system that is not yours. If you can't find one to buy, or don't want to spend the money, this article will show you how to build one, with instructions for both 120V and 240V electrical systems: https://circuitcellar.com/resources/...-ground-loops/ I built one like this and it is mounted inside my amplifier case. I hope this helps.
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Patrick 2012 Martin HD-28V 1984 Martin Shenandoah D-2832 2018 Gretsch G5420TG Oscar Schmidt Autoharp, unknown vintage ToneDexter Bugera V22 Infinium |
#19
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While I don't think I can eliminate a ground loop, I think his problem is more likely common mode noise between two devices each using their own switching power supply.
When he takes the AC33 off batteries and onto its wall power adapter, he is making it solidly grounded which exposes the PC's much more powerful common mode noise. The right solution is a DI between the AC33 and PC. The cheap solution might be floating the wall adapter's ground to the AC33. However it is only a cheap experiment and no guarantee.
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jf45ir Free DIY Acoustic Guitar IR Generator .wav file, 30 seconds, pickup left, mic right, open position strumming best...send to direct email below I'll send you 100/0, 75/25, 50/50 & 0/100 IR/Bypass IRs IR Demo, read the description too: https://youtu.be/SELEE4yugjE My duo's website and my email... [email protected] Jon Fields |
#20
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https://www.amazon.com/Xinsany-Compa...%2C131&sr=8-76 I built mine using a component that had two isolation transformers on a PC board, but I suspect this device works in a similar fashion. Unfortunately I can't find a link to the component I used.
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Patrick 2012 Martin HD-28V 1984 Martin Shenandoah D-2832 2018 Gretsch G5420TG Oscar Schmidt Autoharp, unknown vintage ToneDexter Bugera V22 Infinium |
#21
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Quote:
https://www.ebay.com/itm/402539446545?hash=item5db9388111:gCgAAOSwbYJfpsb s&amdata=enc%3AAQAHAAAA4Mv3Jr7nsfVuImdiq3BYmoc9nKu kmlp%2FJNreVcKoMZUSMuJyHJOVAFHrmBMkRJJxRTyKCO0saW6 i39GcOr2SHGU2BWoss%2FrsrsRo0u%2B%2BwgdW1p35KHJHpeP %2BVeHzR14vqsxSy6YvN4Jli1J2oWdvnL24%2FSTOSt3HVs2rN 7f8FUTRNVoIbHfueX%2FYhjLgw%2FguKF%2BJifXuweDbQKeA8 9L1CEOBalOiCMYqzRPAwYmxHDK3WagtJfzViKZXZQm3xezPpK8 ymUwnSFnwq33GBuv2xhGRbVy5lmypuH8e3NvoIO1z%7Ctkp%3A BFBM-JbN2bhg A similar item is available on Ali Express.
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Patrick 2012 Martin HD-28V 1984 Martin Shenandoah D-2832 2018 Gretsch G5420TG Oscar Schmidt Autoharp, unknown vintage ToneDexter Bugera V22 Infinium |