Battery Ground Thing

Posted by Lew (A) on February 11, 2016 at 13:17:46

In Reply to: RE: OK, I'll be the idiot and ask--what's a BGT? posted by Lee of Omaha on February 11, 2016 at 10:30:10:

Obviously, "Thing" is not correct. If you do a search here on BGT you will find more info than perhaps you could ever want. The idea is to attach the negative terminal of a battery to the audio ground in just about any piece of gear (preamplifier, CDP, etc). Then you "bypass" the two terminals of the battery (only) with a very large value electrolytic capacitor, which can have a very low voltage rating (as you might imagine, since there is no voltage across the terminals of the battery except that which is developed within the battery). Recommended battery voltage is or seems to be 9V. The positive terminal of the battery is connected to nothing but the positive terminal of the electrolytic. Then this electrolytic may be in turn bypassed with a low value film capacitor. Why this does anything, I do not know, since there is no circuit into and out of the gear itself. It is, apparently, the rare case that does not follow the rule, "It is what it is".

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Follow Ups Full Thread

Topic - BGT wich plastic capacitor value did you try? - aupiho 04:03:43 02/09/16 (17)

No Bypass at all sounds best to me. - Maxamillion 06:45:10 02/13/16 (3)

RE: No Bypass at all sounds best to me. - aupiho 05:00:37 03/26/16 (0)

RE: No Bypass at all sounds best to me. - jhrlrd 10:46:11 03/22/16 (1)

RE: No Bypass at all sounds best to me. - Maxamillion 09:37:08 03/26/16 (0)

OK, I'll be the idiot and ask--what's a BGT? - jeffreybehr 16:35:11 02/10/16 (3)

RE: OK, I'll be the idiot and ask--what's a BGT? - Lee of Omaha 10:30:10 02/11/16 (2)

Battery Ground Thing - Lew 13:17:46 02/11/16 (1)

TY, Lew. (NT) - jeffreybehr 15:41:56 02/11/16 (0)

RE: BGT wich plastic capacitor value did you try? - Baki 04:17:24 02/10/16 (3)

RE: BGT wich plastic capacitor value did you try? - aupiho 09:49:51 02/10/16 (2)

RE: BGT wich plastic capacitor value did you try? - Lew 12:22:56 02/10/16 (1)

RE: BGT wich plastic capacitor value did you try? - Baki 13:23:12 02/14/16 (0)

Values - mashley 15:36:44 02/09/16 (4)

RE: Values - aupiho 01:27:57 02/10/16 (3)

Values - mashley 18:13:59 02/10/16 (1)

RE: Values - aupiho 09:39:37 02/11/16 (0)

"1uf is what I...put between amp and fullrange speakers." - jeffreybehr 16:31:13 02/10/16 (0)

Follow Ups

Battery Ground Thing - Lew 13:17:46 02/11/16 (1)

TY, Lew. (NT) - jeffreybehr 15:41:56 02/11/16 (0)

Battery Ground Thing

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