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 Post subject: This is really cool and unique.....but really?
PostPosted: Feb Sun 07, 2016 2:31 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Eureka Illinois
http://www.ebay.de/itm/Battery-Eliminat ... SwL7VWszux

wish I could see that diagram better!


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 Post subject: Re: This is really cool and unique.....but really?
PostPosted: Feb Sun 07, 2016 4:48 pm 
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Joined: May Wed 30, 2007 8:33 pm
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Location: Connecticut zip: 06029
Neat looking item.
The winning bid seems to be a tad on the high side, but they were probably paying for the craftsmanship
involved in making it.
Would make a nice visual as well as function addition to a breadboard set.

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 Post subject: Re: This is really cool and unique.....but really?
PostPosted: Feb Sun 07, 2016 5:32 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Eureka Illinois
Craftsmanship or not, I could almost buy the breadboard for that money. I was more curious about the wiring diagram. If I could see that better, I could possibly build a similar one.


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 Post subject: Re: This is really cool and unique.....but really?
PostPosted: Feb Sun 07, 2016 7:10 pm 
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Location: Dayton Ohio
I cropped and adjusted what you can see of the schematic the best I could.

-Steve


Attachments:
powersupply.jpg
powersupply.jpg [ 55.09 KiB | Viewed 1326 times ]

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 Post subject: Re: This is really cool and unique.....but really?
PostPosted: Feb Sun 07, 2016 7:42 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Eureka Illinois
I really appreciate the effort. Those values on the left are too hazy. I would have requested a better picture from the seller, but that would have been too transparent I think.


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 Post subject: Re: This is really cool and unique.....but really?
PostPosted: Feb Sun 07, 2016 7:50 pm 
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Joined: Jan Mon 05, 2009 4:09 am
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Location: Hudson, MA
The top looks beautiful

Attachment:
AK PWR.JPG


The bottom looks very scary, with exposed 90 volts available when you pick it up.

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 Post subject: Re: This is really cool and unique.....but really?
PostPosted: Feb Sun 07, 2016 8:24 pm 
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Location: Seattle, WA
It's DC though, and it's isolated, floating. Even the ground wire has a cap in it, so it can bleed off RF energy, but blocks DC.

Plus, the breadboard that the supply would be powering had basically the same issue, right? That 90 V wire goes onto the breadboard, then comes right back off it again to one side of the headphones and right up to the user's ears.

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 Post subject: Re: This is really cool and unique.....but really?
PostPosted: Feb Sun 07, 2016 8:31 pm 
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If I lift it up my fingers can touch the 90V B+ and it's return. If I were the seller I would rush out and buy liability insurance.

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