EV Digest 2497
Topics covered in this issue include:
1) Re: Seasoned Greetings
by "alldrin1 <[EMAIL PROTECTED]>" <[EMAIL PROTECTED]>
2) Fw: Have you heard the nanometer material of battery additives to reduce the
choking by PbSO4 ?
by "Lawrence Rhodes" <[EMAIL PROTECTED]>
3) Re: Rudman PFC charger efficiency vs others
by "Lawrence Rhodes" <[EMAIL PROTECTED]>
4) Re: EV Fuse
by "Lawrence Rhodes" <[EMAIL PROTECTED]>
5) Re: Rudman PFC charger efficiency vs others
by "Bob Rice" <[EMAIL PROTECTED]>
6) OT, Hot Air powers EV's?
by "Harry Houck" <[EMAIL PROTECTED]>
7) Re: Vehicle safety: Bigger isn't better
by "Vince" <[EMAIL PROTECTED]>
8) Re: Rudman PFC charger efficiency vs others
by Rich Rudman <[EMAIL PROTECTED]>
9) solid state relays ok?
by "Joseph Miller"<[EMAIL PROTECTED]>
10) EV Archives ??
by Sharkey <[EMAIL PROTECTED]>
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Thank you very much for your great email.
We all need to reflect on the "real meaning of the CHRISTmas season"
Merry Christmas to all and have a great time driving your EV'S :-)
Chuck Alldrin
Chico, CA
2002 RAV4 EV
--- In [EMAIL PROTECTED], "EV'r up LATE" <[EMAIL PROTECTED]> wrote:
> 'Twas the night before Christmas, and all though the earth
> Many missing the story, of the only virgin birth
> Stockings hung on the mantel, where the Bible once lay
> Even Saint Nick, would have warned of this day
> While the children slept, with teddy bear tight
> Never hearing about Him, and the bright star that night
> While parents unknowing, what joy it could bring
> Instead relied on toys, and other material things
> Suddenly outside, there was a loud clash
> Just the lonely widow, sifting through trash
> The moon glowing bright, on the fresh laden snow
> Seeing her I wondered, doesn't she know?
> It's Christmas eve, this is not right
> The neighbors came out, a tick 'till midnight
> The police soon came, and they took her away
> There behind bars, she considers her stay
> Folks, no reindeer, no sleigh, no Santa in red slick
> Without the virgin birth, his name would just be Nick
> No trees of green, with colored lights so bright
> No Christmas carols sung, on a cold snowy night
> Now wake up, listen up, and open your eyes
> You surely know, God doesn't tell lies
> The truth of old, is still right for today
> No matter how hard we hide, or force it away
> It's Jesus, God's son, who died for us all
> He is waiting for you, to answer his call
> Like it or not, we will soon realize
> And all answer to God, looking in his eyes
> He is the reason, I humbly write this today
> He is my Savior and Lord, God's only way
> No need for debate, once the truth be known
> Even the little children, can see the way home
>
> Merry Christmas!
> EVeruplate
> aka
> Bryan in San Jose
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Anybody know what this guy is talking about? Anybody got some messed up
batteries to test it on? Lawrence Rhodes......
----- Original Message -----
From: "�۰���" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Monday, December 23, 2002 1:51 AM
Subject: Have you heard the nanometer material of battery additives to
reduce the choking by PbSO4 ?
> Besides the physical method of agitating PbSO4 moleculars, there is
another alternative to use nanometer materials as additive to create
electron path inside of the lead acid batteries, simple to use and works
great at low cost.
> If you're interested in this product to test, let me know by return email.
> Best Regards,
> Michael Lun ��?0?��?
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I guess another thing that comes up here is why do we have an
electrical system that essentially makes it possible to
electrocute yourself by touching a hot item and any other item
out there that may be grounded, which a lot of stuff is. Humans
are frequently touching grounded objects, so that means that they
themselves are frequently a grounded object to some extent. And
we all know where that electricity in the hot line likes to go.
Keep one hand in your pocket and you'll never shock it. OLD ELECTRICTIONS
SAYING. Lawrence Rhodes.....
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I also know someone who got skingrafts from shorting 28AWG across a 144V
pack unintentionally. He had copper plated on his hands.
I suspect the copper super heated and deposited hot plastic and copper which
fused to his hands. It is amazing what thin wire will take before
vaporizing. I once put a penny in the fuse box of my 67 Datsun Wagon. I
then put in a radio which required metal grinding. Below the radio in this
car is a switch. Its circuits being on the outside of the switch and facing
up. The tiny little flecks of metal fell on it and I didn't brush it them
off. The next time I turned on that switch it melted every inch of the
wire going to the fuse box. That was a long time ago. Will Rodgers said
something about gaining experience. I hope you will gain from mine.
Lawrence Rhodes....
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----- Original Message -----
From: Lawrence Rhodes <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Monday, December 23, 2002 9:55 AM
Subject: Re: Rudman PFC charger efficiency vs others
> I guess another thing that comes up here is why do we have an
> electrical system that essentially makes it possible to
> electrocute yourself by touching a hot item and any other item
> out there that may be grounded, which a lot of stuff is. Humans
> are frequently touching grounded objects, so that means that they
> themselves are frequently a grounded object to some extent. And
> we all know where that electricity in the hot line likes to go.
>
> Keep one hand in your pocket and you'll never shock it. OLD ELECTRICTIONS
> SAYING. Lawrence Rhodes.....
>
> Yup! And the nice bumper sticker I saw on a C.L..and P.= CT Light an'
Power, line truck the other day" If it isn't Grounded, it isn't Dead!" DEAD
in caps!Red! Be careful, and Happy Holidaze!
Seeya
Bob
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* LP8.2: HTML/Attachments detected, removed from message *
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Robert wrote:
> Very interesting study on safety of different types of vehicles. Big
> surprise, the mighty SUV isn't as safe as most folks think, both to
> the driver & passengers and to people in other vehicles; only Pickup
> trucks are worse.
Granted, this is the proper and scientific manner in which to examine the data, but
when asked why they're driving big SUVs, the first
words you hear out of every Soccer Mom's mouth is that it's safer for their children.
Vince
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John G. Lussmyer wrote:
>
> At 10:20 PM 12/20/2002 -0800, Roger Stockton wrote:
> >Really all I wanted to point out is that nice as a 9x% peak efficency
> >is, it is entirely possible for the overall charge efficiency to be
> >only 1-2% better than competing chargers, and it isn't impossible for
> >it to be worse!
>
> Hmm, so what we need is a charger made of PFC-5 modules. Controller would
> keep as many modules running full-bore as possible, and just shut off
> modules that aren't needed. Gang in as many as you want to pay for!
>
> --
> John G. Lussmyer mailto:[EMAIL PROTECTED]
> Dragons soar and Tigers prowl while I dream.... http://www.CasaDelGato.com
The thought has occured. The first try was for less than $1000 and for
about 1500 watts. We ran into limitations at about 1300watts with the
"Normal" TO-246/264 parts. So we got dragged updwards by market needs
and my enthusiasim.
A 1000 watt device could be fine tuned for many reasons.
Peak efficency, I try to keep the peaks as broad as possible. We have
not super tuned any of our gear for any particular data point. It just
happens that the PFC50s are more efficent the higher the output voltage
is. Or as Lee has put it, as high as I have gone with this setup.
The point you are missing or trying to get me to see, is that the
majority of the charge energy transfered is done in the bulk phase, and
this is where the efficentcy COUNTS the most. What it does for the hour
or so of the taper/equalize/float phase can be pretty bad because the
total power transfered is a fraction of what is transfered while in full
power bulk.
So...I could be at %20 and delivering 0.5 amps for hours, and not waste
a fraction of a Kwhr.
But with a main full power transfer of Say %60-70, at say 20 amps...
there is a noticable loss that shows up in the power bill. I will bank
my high 80 to low 90s for the majority of the charge against some poor
PF, low eff at really low currents.
Funny about my peak power losses. I can turn the chargers down....and
still do what ever test or comparison is wished. Yea it would be
educational for all of us since I know the PFC50 gets a little sloppy
under 10 amps.
I know that Switchers can be lossy at points. But I think My PFC
chargers and the simple time out functions save rather large amounts of
power compared to the Competition. The Brusa'a are in a rather higher
priced range, even for the smallest unit.
Doing a 12 volt pack from even 120 is not comparison that I would come
out well on. Even a simple transformer and rectifier charger at really
low voltages will have lower losses than our PFC stages. But our PFC
gear can do these large input to output ratios.... without jumpering
taps and shunts.
--
Rich Rudman
Manzanita Micro
www.manzanitamicro.com
1-360-297-7383,Cell 1-360-620-6266
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Hi: Has anyone every used a Solid State Relay to switch a Russco (or later,
now under construction, variac) 120v 20 amp Charger? I would like to
implement a timer control, and found a nice 25 amp 240 volt relay at all
electronics, new potter brumfield, that switches with 3-32 v. I have heard
that the SCRs can produce some hash- anybody every run into problems?
Thanks, and Happy Holidays!
Joe
"White Rabbit" `81 Rabbit Pickup
http://www.austinev.org/evalbum/390.html
Joe Miller KI7WV
jmiller_at_eyes_dot_arizona_dot_edu
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How are others reading the archives these days?
Since I prefer to follow the list by reading the web-based archives rather
than receiving individual e-mails, I usually keep up by using the Yahoo
pages. Unfortunately, Yahoo sometimes doesn't post all of the messages. In
the past, I went to the Crest archives to fill in the blanks. For the last
few months, though, the Crest archive has been usless, with the "current"
directory being Jan 2001, and the Nov/Dec 2002 directories empty.
Am I missing something here? Is there a complete archive aside from Yahoo,
which is only adequate at best?
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