review this battery charger

What do you folks think about this gem:

https://www.youtube.com/watch?v=cpaWCedoptA

I like the special high reluctance transformer and kindling used as 
insulation.

tirsdag den 21. december 2021 kl. 04.16.48 UTC+1 skrev Cydrome Leader:
> What do you folks think about this gem: 
> 
> https://www.youtube.com/watch?v=cpaWCedoptA 
> 
> I like the special high reluctance transformer and kindling used as 
> insulation.

need a welder? https://youtu.be/2bC0Vmy3niA

On Tuesday, 21 December 2021 at 04:05:42 UTC, Sylvia Else wrote:
> On 21-Dec-21 2:16 pm, Cydrome Leader wrote: 
> > What do you folks think about this gem: 
> > 
> > https://www.youtube.com/watch?v=cpaWCedoptA 
> > 
> > I like the special high reluctance transformer and kindling used as 
> > insulation. 
> > 
> >
> No Earth. 
> 
> Joining wires by twisting alone is asking for a fire. 
> 
> Sylvia.

They did solder the connection to the rectifier diode.   I thought it
was quite impressive.  A lot of thought had gone into the design
and it certainly made good use of recycled materials.

John

On Tue, 21 Dec 2021 02:50:33 -0800 (PST), John Walliker
<jrwalliker@gmail.com> wrote:

>On Tuesday, 21 December 2021 at 04:05:42 UTC, Sylvia Else wrote:
>> On 21-Dec-21 2:16 pm, Cydrome Leader wrote: 
>> > What do you folks think about this gem: 
>> > 
>> > https://www.youtube.com/watch?v=cpaWCedoptA 
>> > 
>> > I like the special high reluctance transformer and kindling used as 
>> > insulation. 
>> > 
>> >
>> No Earth. 
>> 
>> Joining wires by twisting alone is asking for a fire. 
>> 
>> Sylvia.
>
>They did solder the connection to the rectifier diode.   I thought it
>was quite impressive.  A lot of thought had gone into the design
>and it certainly made good use of recycled materials.
>
>John

Besides the craft paper substitution, what made you think that 
the materials were recycled? Repurposed, maybe.

RL

On Tuesday, 21 December 2021 at 15:16:25 UTC, legg wrote:
> On Tue, 21 Dec 2021 02:50:33 -0800 (PST), John Walliker 
> <jrwal...@gmail.com> wrote: 
> 
> >On Tuesday, 21 December 2021 at 04:05:42 UTC, Sylvia Else wrote: 
> >> On 21-Dec-21 2:16 pm, Cydrome Leader wrote: 
> >> > What do you folks think about this gem: 
> >> > 
> >> > https://www.youtube.com/watch?v=cpaWCedoptA 
> >> > 
> >> > I like the special high reluctance transformer and kindling used as 
> >> > insulation. 
> >> > 
> >> > 
> >> No Earth. 
> >> 
> >> Joining wires by twisting alone is asking for a fire. 
> >> 
> >> Sylvia. 
> > 
> >They did solder the connection to the rectifier diode. I thought it 
> >was quite impressive. A lot of thought had gone into the design 
> >and it certainly made good use of recycled materials. 
> > 
> >John
> Besides the craft paper substitution, what made you think that 
> the materials were recycled? Repurposed, maybe. 
> 
> RL
That is what I was mainly thinking of.  The core looked as if it might
have been intended for some other purpose.  I suppose the rust and
grime on the laminations are good for reducing eddy currents.  It did
seem surprising that the guillotine operator appeared to have all his
fingers. The diode heatsink casting might well have been recycled
aluminium floor sweepings

John

On Tuesday, December 21, 2021 at 5:24:50 PM UTC, John Walliker wrote:
> On Tuesday, 21 December 2021 at 15:16:25 UTC, legg wrote: 
> > On Tue, 21 Dec 2021 02:50:33 -0800 (PST), John Walliker 
> > <jrwal...@gmail.com> wrote: 
> > 
> > >On Tuesday, 21 December 2021 at 04:05:42 UTC, Sylvia Else wrote: 
> > >> On 21-Dec-21 2:16 pm, Cydrome Leader wrote: 
> > >> > What do you folks think about this gem: 
> > >> > 
> > >> > https://www.youtube.com/watch?v=cpaWCedoptA 
> > >> > 
> > >> > I like the special high reluctance transformer and kindling used as 
> > >> > insulation. 
> > >> > 
> > >> > 
> > >> No Earth. 
> > >> 
> > >> Joining wires by twisting alone is asking for a fire. 
> > >> 
> > >> Sylvia. 
> > > 
> > >They did solder the connection to the rectifier diode. I thought it 
> > >was quite impressive. A lot of thought had gone into the design 
> > >and it certainly made good use of recycled materials. 
> > > 
> > >John 
> > Besides the craft paper substitution, what made you think that 
> > the materials were recycled? Repurposed, maybe. 
> > 
> > RL
> That is what I was mainly thinking of. The core looked as if it might 
> have been intended for some other purpose. I suppose the rust and 
> grime on the laminations are good for reducing eddy currents. It did 
> seem surprising that the guillotine operator appeared to have all his 
> fingers. The diode heatsink casting might well have been recycled 
> aluminium floor sweepings 
> 
> John

I'm most struck by their work practices. Working on cracked concrete
floor, no tables or chairs. I realize some cultural ethic may be a 
factor, but ergonomics & safety are "universal".  Also, strange that
they have some hand tools, like pliers, but no wire cutters (scissors
is a painful way to cut wire!) or rubber mallet. And they have some
power tools like the drill press and circular saw, but no electric or
pneumatic screw/nut drivers, riveters, etc. And a sheet metal shear.
I wonder if electricity there is a premium? Karachi is the capital city, 
but I would think, make electricity as available as possible for 
business-sector development.  They might do well to host a
manufacturing engineering consultant for a few days.

Rich S <richsulinengineer@gmail.com> wrote:
> On Tuesday, December 21, 2021 at 5:24:50 PM UTC, John Walliker wrote:
>> On Tuesday, 21 December 2021 at 15:16:25 UTC, legg wrote: 
>> > On Tue, 21 Dec 2021 02:50:33 -0800 (PST), John Walliker 
>> > <jrwal...@gmail.com> wrote: 
>> > 
>> > >On Tuesday, 21 December 2021 at 04:05:42 UTC, Sylvia Else wrote: 
>> > >> On 21-Dec-21 2:16 pm, Cydrome Leader wrote: 
>> > >> > What do you folks think about this gem: 
>> > >> > 
>> > >> > https://www.youtube.com/watch?v=cpaWCedoptA 
>> > >> > 
>> > >> > I like the special high reluctance transformer and kindling used as 
>> > >> > insulation. 
>> > >> > 
>> > >> > 
>> > >> No Earth. 
>> > >> 
>> > >> Joining wires by twisting alone is asking for a fire. 
>> > >> 
>> > >> Sylvia. 
>> > > 
>> > >They did solder the connection to the rectifier diode. I thought it 
>> > >was quite impressive. A lot of thought had gone into the design 
>> > >and it certainly made good use of recycled materials. 
>> > > 
>> > >John 
>> > Besides the craft paper substitution, what made you think that 
>> > the materials were recycled? Repurposed, maybe. 
>> > 
>> > RL
>> That is what I was mainly thinking of. The core looked as if it might 
>> have been intended for some other purpose. I suppose the rust and 
>> grime on the laminations are good for reducing eddy currents. It did 
>> seem surprising that the guillotine operator appeared to have all his 
>> fingers. The diode heatsink casting might well have been recycled 
>> aluminium floor sweepings 
>> 
>> John
> 
> I'm most struck by their work practices. Working on cracked concrete
> floor, no tables or chairs. I realize some cultural ethic may be a 
> factor, but ergonomics & safety are "universal".  Also, strange that
> they have some hand tools, like pliers, but no wire cutters (scissors
> is a painful way to cut wire!) or rubber mallet. And they have some
> power tools like the drill press and circular saw, but no electric or
> pneumatic screw/nut drivers, riveters, etc. And a sheet metal shear.
> I wonder if electricity there is a premium? Karachi is the capital city, 
> but I would think, make electricity as available as possible for 
> business-sector development.  They might do well to host a
> manufacturing engineering consultant for a few days.

The third-world manufacturing videos are fascinating. It looks like people 
spending half their time throwing parts on the ground, and the rest of the 
time picking then back up again. It makes very little sense, but might 
explain why those places are such dumps to start with.

On Thursday, 23 December 2021 at 18:23:19 UTC, Rich S wrote:
> On Tuesday, December 21, 2021 at 5:24:50 PM UTC, John Walliker wrote: 
> > On Tuesday, 21 December 2021 at 15:16:25 UTC, legg wrote: 
> > > On Tue, 21 Dec 2021 02:50:33 -0800 (PST), John Walliker 
> > > <jrwal...@gmail.com> wrote: 
> > > 
> > > >On Tuesday, 21 December 2021 at 04:05:42 UTC, Sylvia Else wrote: 
> > > >> On 21-Dec-21 2:16 pm, Cydrome Leader wrote: 
> > > >> > What do you folks think about this gem: 
> > > >> > 
> > > >> > https://www.youtube.com/watch?v=cpaWCedoptA 
> > > >> > 
> > > >> > I like the special high reluctance transformer and kindling used as 
> > > >> > insulation. 
> > > >> > 
> > > >> > 
> > > >> No Earth. 
> > > >> 
> > > >> Joining wires by twisting alone is asking for a fire. 
> > > >> 
> > > >> Sylvia. 
> > > > 
> > > >They did solder the connection to the rectifier diode. I thought it 
> > > >was quite impressive. A lot of thought had gone into the design 
> > > >and it certainly made good use of recycled materials. 
> > > > 
> > > >John 
> > > Besides the craft paper substitution, what made you think that 
> > > the materials were recycled? Repurposed, maybe. 
> > > 
> > > RL 
> > That is what I was mainly thinking of. The core looked as if it might 
> > have been intended for some other purpose. I suppose the rust and 
> > grime on the laminations are good for reducing eddy currents. It did 
> > seem surprising that the guillotine operator appeared to have all his 
> > fingers. The diode heatsink casting might well have been recycled 
> > aluminium floor sweepings 
> > 
> > John
> I'm most struck by their work practices. Working on cracked concrete 
> floor, no tables or chairs. I realize some cultural ethic may be a 
> factor, but ergonomics & safety are "universal". Also, strange that 
> they have some hand tools, like pliers, but no wire cutters (scissors 
> is a painful way to cut wire!) or rubber mallet. And they have some 
> power tools like the drill press and circular saw, but no electric or 
> pneumatic screw/nut drivers, riveters, etc. And a sheet metal shear. 
> I wonder if electricity there is a premium? Karachi is the capital city, 
> but I would think, make electricity as available as possible for 
> business-sector development. They might do well to host a 
> manufacturing engineering consultant for a few days.

I'm sure they could teach a consultant more than the consultant could teach them. I would want to use a pushsstick though on that guillotine.

The wire isn't copper colour. I can't imagine them paying unnecessarily for plating. It's not iron wire is it? :)

In article <738a69b8-f526-42cc-b396-490c37a33918n@googlegroups.com>, 
tabbypurr@gmail.com says...
> I'm sure they could teach a consultant more than the consultant could teach them. I would want to use a pushsstick though on that guillotine.
> 
> The wire isn't copper colour. I can't imagine them paying unnecessarily for plating. It's not iron wire is it? :)
> 
> 

I did not watch the whole thing,but if they did not solder but crimped 
or screwed the connections it may have been Aluminum wire.  


Lots of wire comming from China seems to be aluminum with a plating of 
copper.  Real crappy way for them to do things to cut the cost.

Fine for high frequencies like radio and tv, but not for DC or low 
frequency AC as house wiring or drop cords.  YOU have to go up a couple 
of wire sizes to carry the same current.

Tabby <tabbypurr@gmail.com> wrote:
> On Thursday, 23 December 2021 at 18:23:19 UTC, Rich S wrote:
>> On Tuesday, December 21, 2021 at 5:24:50 PM UTC, John Walliker wrote: 
>> > On Tuesday, 21 December 2021 at 15:16:25 UTC, legg wrote: 
>> > > On Tue, 21 Dec 2021 02:50:33 -0800 (PST), John Walliker 
>> > > <jrwal...@gmail.com> wrote: 
>> > > 
>> > > >On Tuesday, 21 December 2021 at 04:05:42 UTC, Sylvia Else wrote: 
>> > > >> On 21-Dec-21 2:16 pm, Cydrome Leader wrote: 
>> > > >> > What do you folks think about this gem: 
>> > > >> > 
>> > > >> > https://www.youtube.com/watch?v=cpaWCedoptA 
>> > > >> > 
>> > > >> > I like the special high reluctance transformer and kindling used as 
>> > > >> > insulation. 
>> > > >> > 
>> > > >> > 
>> > > >> No Earth. 
>> > > >> 
>> > > >> Joining wires by twisting alone is asking for a fire. 
>> > > >> 
>> > > >> Sylvia. 
>> > > > 
>> > > >They did solder the connection to the rectifier diode. I thought it 
>> > > >was quite impressive. A lot of thought had gone into the design 
>> > > >and it certainly made good use of recycled materials. 
>> > > > 
>> > > >John 
>> > > Besides the craft paper substitution, what made you think that 
>> > > the materials were recycled? Repurposed, maybe. 
>> > > 
>> > > RL 
>> > That is what I was mainly thinking of. The core looked as if it might 
>> > have been intended for some other purpose. I suppose the rust and 
>> > grime on the laminations are good for reducing eddy currents. It did 
>> > seem surprising that the guillotine operator appeared to have all his 
>> > fingers. The diode heatsink casting might well have been recycled 
>> > aluminium floor sweepings 
>> > 
>> > John
>> I'm most struck by their work practices. Working on cracked concrete 
>> floor, no tables or chairs. I realize some cultural ethic may be a 
>> factor, but ergonomics & safety are "universal". Also, strange that 
>> they have some hand tools, like pliers, but no wire cutters (scissors 
>> is a painful way to cut wire!) or rubber mallet. And they have some 
>> power tools like the drill press and circular saw, but no electric or 
>> pneumatic screw/nut drivers, riveters, etc. And a sheet metal shear. 
>> I wonder if electricity there is a premium? Karachi is the capital city, 
>> but I would think, make electricity as available as possible for 
>> business-sector development. They might do well to host a 
>> manufacturing engineering consultant for a few days.
> 
> I'm sure they could teach a consultant more than the consultant could teach them. I would want to use a pushsstick though on that guillotine.
> 
> The wire isn't copper colour. I can't imagine them paying unnecessarily for plating. It's not iron wire is it? :)

It looked like cloth covered wire for the transformer. I can't imagine 
that's cheaper than varnish, but maybe there's another shop where they 
twist it on by hand.