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| JDW:
--- Quote from: GnomeZA on December 26, 2023, 05:00:23 am ---Pointless posts about it is dangerous without well articulated reasons or anecdotes about how someone got the shock of their life without explaining in detail why. --- End quote --- Very well... Give us your "well articulated reasons" and "explain in detail why" your position on this topic is vastly superior to all others here. You have thrashed most people here who are trying to help others by cautioning them, so it's time for you to defend your position about NOT cautioning them. Otherwise, your dialog on the matter too becomes the very "pointless posts" you preached against. More specifically, all you've really said is this: Personally I realised I don't have the discipline to avoid ever touching the BNC while probing potentially lethal voltages, so floating is not for me personally. But I certainly think it is better to make people fully aware of the situation than shout endless warnings without reasons. Those two sentences aren't "well articulated reasons" or "explaining in detail" to justify your stance or show us why you have the moral or engineering high ground. Right now, I see most people here basically telling little kids NOT to play in a busy street or they might get hurt, while you are basically trashing their parents and telling the kids, "it's okay to play in the street, so long as you play it safe." Yes, it really is basically that. |
| tggzzz:
--- Quote from: JDW on December 26, 2023, 07:22:30 am ---Right now, I see most people here basically telling little kids NOT to play in a busy street or they might get hurt, while you are basically trashing their parents and telling the kids, "it's okay to play in the street, so long as you play it safe." Yes, it really is basically that. --- End quote --- It is pleasing to see people picking up on the analogy of playing in the road or walking into the road without looking. It is a helpful analogy, since it points out the weakness of the stated position. In addition to your points I will note that gnomeza is simply wrong to claim "without well articulated reasons or anecdotes". Maybe he can't understand the reasons and specific anecdote mentioned in https://entertaininghacks.wordpress.com/library-2/scope-probe-reference-material/ It seems he isn't as well-read or clued up as he would like to think. What's the betting this is sufficiently easy?... Here's the reference to the experienced engineer in Sylvania lighting laboratory: https://groups.io/g/TekScopes/message/10754 |
| coppercone2:
amazing how much people don't want to buy floating probes LOL |
| tggzzz:
Ah, it is good to see that photo I posted long ago being remembered :) It does skewer some (other) people's points quite effectively and amusingly. |
| madires:
--- Quote from: JDW on December 25, 2023, 09:33:15 pm --- --- Quote from: madires on December 25, 2023, 03:34:22 pm ---In case that power brick comes with an EMI supression cap between primary and secondary I wouldn't call the DSO floating. --- End quote --- That kind of statement seems to suggest this: "Go ahead and remove the ground from your scopes and then test high voltage because as long as you have an EMI suppression cap between the primary and secondary, it's not floating and therefore A-OK." --- End quote --- Nope! You're reversing cause and effect while adding a thrid thing, which might be even dangerous based on the specific measurement setup. |
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