Author Topic: Snake oil  (Read 626185 times)

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Offline AVGresponding

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Re: Snake oil
« Reply #1250 on: December 09, 2021, 07:30:59 pm »
Quote
V = (nominal cell voltage x number of cells (fine, that's acceptable)), Ah = (nominal Ah rating of cell x number of cells (*sighs* no! This is not how it works!))

I'm pretty sure that is how it does work, just that you can't do both at once. In the context of a powerbank, the Ah rating certainly would be more likely to be nominal Ah x cell count.

No. The Wh rating would be, but the Ah rating is not related to the number of cells, nor does it change when looking at, for example, the case of a powerbank powered by a single lithium cell and outputting 5V.
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Offline helius

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Re: Snake oil
« Reply #1251 on: December 09, 2021, 08:07:57 pm »
Cells can be connected in series, in parallel, or a combination of both. A series battery has the same Coulomb capacity as its separate cells, but a parallel battery's capacity is the sum of all of its cells together.
 

Offline dunkemhigh

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Re: Snake oil
« Reply #1252 on: December 09, 2021, 08:45:50 pm »
Quote
but the Ah rating is not related to the number of cells

Are you saying that two 3.7V 500mAh batteries in parallel woudn't give you 3.7V 1Ah capacity?

Well, blow me down!  :o
 

Offline AVGresponding

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Re: Snake oil
« Reply #1253 on: December 10, 2021, 06:22:22 am »
Quote
but the Ah rating is not related to the number of cells

Are you saying that two 3.7V 500mAh batteries in parallel woudn't give you 3.7V 1Ah capacity?

Well, blow me down!  :o

No, I'm saying that two 3.7V 500mAh in series doesn't give you 7.4V 1Ah capacity, which is what these vendors like to claim. I was considering series and neglected the less common parallel, my bad.
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Offline Gregg

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Re: Snake oil
« Reply #1254 on: December 31, 2021, 08:05:17 pm »
USB powered heat gun?? And it isn’t the 1st of April yet

I found this on craigslist and thought it might be worth a laugh.  I’m sure it is as dysfunctional as its creator.  The kicker is the offer of a 5 volt 300 amp power supply at additional cost overly optimistic price.    :-DD

Maybe it was a prank gift to the seller, maybe just a troll.  But if I wanted to make this, I’m sure I could do it for less than 10% the cost of this one.  :palm:

https://sfbay.craigslist.org/sby/tls/d/san-jose-usb-powered-heat-gun/7426917883.htm

 Here is a screenshot:
 

Offline McBryce

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Re: Snake oil
« Reply #1255 on: December 31, 2021, 10:34:32 pm »
That's got to be a joke, but maybe it would work with my 600V 1A USB powersupply?  :)

McBryce.
30 Years making cars more difficult to repair.
 

Offline Ben321

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Re: Snake oil
« Reply #1256 on: January 07, 2022, 07:10:15 am »
I'm pretty sure this is snake oil.
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Offline CJay

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Re: Snake oil
« Reply #1257 on: January 07, 2022, 07:31:19 am »
Chocolate snake oil:

https://www.vosgeschocolate.com/pages/the-vosges-experience

If they can't even get Hz correct why would I believe they have any clue what they're talking about.
 

Offline helius

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Re: Snake oil
« Reply #1258 on: January 07, 2022, 09:06:12 am »
Now that's a prime example of "getting high on your own supply".
You too can experience cosmic peace and serenity—by stuffing your face with candy.
 
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Offline ogden

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Re: Snake oil
« Reply #1259 on: January 07, 2022, 03:52:25 pm »
Worth to mention in this thread: Elizabeth Holmes, Convicted of Theranos Fraud, Faces 80 Years in Jail

https://www.newsweek.com/elizabeth-holmes-convicted-theranos-fraud-1665242
 

Offline AVGresponding

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Re: Snake oil
« Reply #1260 on: January 07, 2022, 03:56:29 pm »
I'd be surprised if she was handed consecutive sentences. Concurrent would be more likely?
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Offline Cerebus

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Re: Snake oil
« Reply #1261 on: January 07, 2022, 05:16:03 pm »
Now that's a prime example of "getting high on your own supply".
You too can experience cosmic peace and serenity—by stuffing your face with candy.

Well this face sure looks like it's experiencing "cosmic peace and serenity" to me:  :)

Anybody got a syringe I can use to squeeze the magic smoke back into this?
 

Offline CJay

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Re: Snake oil
« Reply #1262 on: January 08, 2022, 11:37:55 am »
I'd be surprised if she was handed consecutive sentences. Concurrent would be more likely?

I'd be surprised if she even went near a facility we'd recognise as a jail, white collar crime like like fraud seems to attract 'house arrest' sentences a lot of the time when it's not an open prison/country club.

 

Offline AVGresponding

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Re: Snake oil
« Reply #1263 on: January 08, 2022, 06:45:34 pm »
I'd be surprised if she was handed consecutive sentences. Concurrent would be more likely?

I'd be surprised if she even went near a facility we'd recognise as a jail, white collar crime like like fraud seems to attract 'house arrest' sentences a lot of the time when it's not an open prison/country club.

Probably depends who you piss off, to some degree. Remember Bernie Madoff? Died in prison.

Some of Holmes' investors were quite powerful people and institutions, I think a custodial sentence in a real prison is highly likely.
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Offline Cyberdragon

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Re: Snake oil
« Reply #1264 on: January 11, 2022, 07:35:20 am »
Chocolate snake oil:

https://www.vosgeschocolate.com/pages/the-vosges-experience

If they can't even get Hz correct why would I believe they have any clue what they're talking about.

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Offline armandine2

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Re: Snake oil
« Reply #1265 on: January 28, 2022, 02:03:25 pm »
there are videos of signal generators "playing" the hallelujah chorus - well beyond my test equipment competence. I should be able to create a binaural theta beat frequency recording, though. Can it have a similar, or any, affect on your mood?

  https://www.frontiersin.org/articles/10.3389/fnhum.2017.00557/full

 

Offline Buriedcode

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Re: Snake oil
« Reply #1266 on: January 28, 2022, 09:27:14 pm »
there are videos of signal generators "playing" the hallelujah chorus - well beyond my test equipment competence. I should be able to create a binaural theta beat frequency recording, though. Can it have a similar, or any, affect on your mood?

  https://www.frontiersin.org/articles/10.3389/fnhum.2017.00557/full

Anything can can have "effect on your mood". Flowers, a few lyrics from a song, the smell of peanuts.  It's such a vague and subjective measure that one can make pretty much any claim they like about almost anything and it can be almost impossible to verify or falsify it.   Think about it, how do you measure any change in your mood? You ask people. Their reply is influenced by everything from what they had for breakfsat, to what font the questionaire is in (and of course, how the question is worded).
 


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