I am just thinking about this. There is earth wire that is connected to the chassis for safety. But earth is shared with everything else in the house.
What if i solder diodes to the earth to limit current to 1 way (out of the amp only). Maybe put 2 in series?
Do you think it will help to reduce noise to the chassis?
What if i solder diodes to the earth to limit current to 1 way (out of the amp only). Maybe put 2 in series?
Do you think it will help to reduce noise to the chassis?
NEVER mess with the safety ground. Its purpose is to carry all the fault current and blow a fuse,
or trip a breaker. Inserting any component in that path, diodes or other, is extremely dangerous.
Instead, you may float the AUDIO circuit from the chassis, or connect the audio circuit to the chassis
through an impedance (R, C, diodes), to address noise problems. But do not touch the safety ground.
An article about noise in audio amplifiers: http://hifisonix.com/wordpress/wp-content/uploads/2019/02/Ground-Loops.pdf
or trip a breaker. Inserting any component in that path, diodes or other, is extremely dangerous.
Instead, you may float the AUDIO circuit from the chassis, or connect the audio circuit to the chassis
through an impedance (R, C, diodes), to address noise problems. But do not touch the safety ground.
An article about noise in audio amplifiers: http://hifisonix.com/wordpress/wp-content/uploads/2019/02/Ground-Loops.pdf
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Sorry but you do not undestand how AC or diodes work.
So you do know Electricity or Electronics.
Please DO NOT mess with grounding or any safety related issues.
Not only that, the whole reason behind "ground" is that this is your ZERO volt reference. Using diodes creates a ~0.6 V drop - meaning that depending on the voltage potential of whatever you ground via a diode is now not zero but +/- the voltage drop across the diode depending on how the diode is installed. If you have noise after grounding whatever you are trying to ground, you have problems elsewhere in the circuit.
Thanks for the link. I saw the part about using bridge rectifier as ground lifter as well.
Cheers!!
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This post may be of interest and the previous one I quoted from https://www.diyaudio.com/forums/solid-state/324413-dozens-schemes-wire-amp-5.html#post5477333
Btw, I found this online.
Power line filter for ground wire
lhttp://www.reliantemc.com/OnFILTER-GLE30-1-30Amp-Ground-Filter.html
I think ground filtering is exactly what I need.... but the size of it. lol....
Nope, that's for installation in the building circuit (hence the size).
I would heed the advice of those that have already posted.
Presumably you are having a problem with hum? How about post the details of your system; the problem you are experiencing; steps you have taken to mitigate the issue etc.
It might be something that can be resolved without resorting to a ground lift.
I would heed the advice of those that have already posted.
Presumably you are having a problem with hum? How about post the details of your system; the problem you are experiencing; steps you have taken to mitigate the issue etc.
It might be something that can be resolved without resorting to a ground lift.
P
Thanks for the reply. No i am not having any hums or ground loop issue. Things are fine. I am just looking for ways to prevent power noise from the ground getting to my amp etc...
I live in a 25 storey apartment block. Each ground cable (comes from a utility room on level 1) is shared by several floors. Due to this, its never totally clean.
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