Chip with simple program for Toy

[Lord Garth]

<hboothe@gte.net> wrote in message
news:1110984084.204853.29530@f14g2000cwb.googlegroups.com...

Hey, Garth, the voltage across the positive and negative leads of the
charger (while actually charging) is 2.6v (which I think means that I'm
sinking all available voltage EXCEPT 2.6 volts. The voltage across the
leads of the device with the driver NOT attached, so it's open circuit
potential is 13.6 (approx.) volts. I ran the unit for a while last
night without the housing of the driver getting hot or even warm, but
the LM317 sure gets hot. I set one device up as a constant voltage
device, as I think I mentioned in one of my posts and it got hot, too.
I still don't know if I should be setting this thing up as a constant
voltage or a constant current device, or if I should be looking for
some different technology to do this. If it's constant current, won't
it do just that, remain constant so, say the driver's battery is
getting fully charged so it's current tries to drop (it's drawing less
current), won't the setup of the LM317 as a constant current device
just increase voltage to still manage the same amount of current
output? With the constant voltage device it would seem like it
couldn't increase the current because it can't increase the voltage, so
that might be better, but it was getting hot, too.

The heat tells me that maybe the problem is inherent to this device
trying to dissipate/sink the difference between a 13.8v car system and
a 2.4v driver. It would help if I knew a lot more about electronics,
and it's frustrating not knowing this stuff any better than I do; I
fear that my ingnorance may be preventing me from seeing or
understanding some simple thing that would make this clear.

Anyway, thanks for your help and time.

--HC

The chargers output voltage is not 'stiff' so you need to measure
close to 2.4 volts open circuit. That means without anything attached
to the output of the voltage regulator. Given an input of 13.8V and an
output of 2.4V, that means the 317 is going to loose 11.4 volts across
itself. It will need a heatsink since that is quit a bit of difference.
Make it
reasonably large.

Now that you have created the proper voltage, you can regulate the current.
The second regulator will loose some voltage across itself as well so be
prepared to go back and adjust the voltage regulator to make up for the loss
on the current regulator. Ultimately, you should read the output of the
open circuit current regulator to be close to 2.4 volts and if connected to
a battery, the current should be limited to 120mA for a .1C assuming 1200mAH
sub C cells.

You need both conditions to do this properly.

Too high of a voltage applied across the battery will damage that battery.
The way one sets up bench power supply is to adjust the open circuit voltage
and then set the current limit to zero, short the supply and SLOWLY turn up
the
current limit until the desired level is reached.

 

[Michael A. Terrell]

Robert Monsen wrote:

Michael A. Terrell wrote:
Robert Monsen wrote:

At my last job I had to let the IT droids install all software,
including software to program parts on the production line.


That is overly restrictive.

Yes, considering that was the one who wrote and maintained somne of
the test software, and the production floor computers were not part of
the corporate, or any other network.

--
?

Michael A. Terrell
Central Florida

 

[Michael A. Terrell]

fengjianqing wrote:

Why you can see so many websites have flash. Because the servicer tell to
the owner of the website-- the flash is beautiful and wonderful for
others' first eye to see you website. And from this feather the servicer
company can earn more.

For the beginning business with China, I also 100% agree you should take
care about the quality, the price, the time... But if you do not to try
you do not know, you will lose chance. More and more company purchase
directly from China. Why? It is not only because the lower price, also
because you pay the lower money you can get the same quality products or
the higher quality. This is true!
So at first give yourself chance to try. You will earn from China.

Regards,
Feng

I generaly close the home page of any website that starts with a
Flash animation and go elsewhere.

--
?

Michael A. Terrell
Central Florida

 

[Fred Abse]

On Sun, 13 Mar 2005 20:49:44 -0800, Robert Monsen wrote:

JazzMan wrote:
[quoted text muted]

Try www.futurlec.com. It may be cheaper to put a bunch of them on a
board, and then cut them up later. Send them email, they may be willing
to help out with that.

www.futurelec.com

There are two URLs here. One with, one without an "e".


The one "without" is a straight HTML site and will display in Dillo, which
has no bells or whistles. Not even frames.

The one "with" is 99% Flash.


This may account for the differing experiences of subsequent posters to
this thread

--
"Electricity is of two kinds, positive and negative. The difference
is, I presume, that one comes a little more expensive, but is more
durable; the other is a cheaper thing, but the moths get into it."
(Stephen Leacock)

 

[Robert Monsen]

Fred Abse wrote:

On Sun, 13 Mar 2005 20:49:44 -0800, Robert Monsen wrote:


JazzMan wrote:

[quoted text muted]

Try www.futurlec.com. It may be cheaper to put a bunch of them on a
board, and then cut them up later. Send them email, they may be willing
to help out with that.

www.futurelec.com



There are two URLs here. One with, one without an "e".


The one "without" is a straight HTML site and will display in Dillo, which
has no bells or whistles. Not even frames.

The one "with" is 99% Flash.


This may account for the differing experiences of subsequent posters to
this thread

I guess that means I need to take credit for this mess. Sigh. Apologies
to all concerned. It is

www.futurlec.com

No 'e'.

--
Regards,
Robert Monsen

"Your Highness, I have no need of this hypothesis."
- Pierre Laplace (1749-1827), to Napoleon,
on why his works on celestial mechanics make no mention of God.

 

[Roger Johansson]

Fred Abse <excretatauris@cerebrumconfus.it> wrote:

Try www.futurlec.com.
It may be cheaper to put a bunch of them on a
board, and then cut them up later. Send them email, they may be
willing to help out with that.

There are two URLs here. One with, one without an "e".
The one "without" is a straight HTML site and will display in Dillo,
which has no bells or whistles. Not even frames.

A nice and well functioning site, I wish more companies had so good
sites. Honors to the web designer at www.futurlec.com and sorry for the
mistake.

The one "with" is 99% Flash.

The one with e is a french site based in Marseille, and the site does not
seem to be functional at all, as far as I can see. The flash animation
just sits there and blinks a little, showing some phone numbers in
Marseille. www.futurelec.com
Useless flash animation, he could have shown the same phone numbers with
a 100 byte pure text file.


--
Roger J.

 

[JeffM]

I went to the site again.
Guess what--it's not a Flash site any more.
So, do those guys read this group?
Were they coincidently trying something foolish
at the exact moment they were getting free advertisement here?
JeffM

So, you have been whining about this site
without having tried it recently
Robert Monsen

I didn't know it existed until you mentioned it.

I followed YOUR LINK.
On my return visit the next day (after Googling them),
it appears they had returned to normal HTML.

It's exactly the same as the last 100 times I've been there,
which has been during the last few years.

It's just their bad luck to be monkeying with it

at the same time you were praising them.

I don't really know what 'flash' sites look like,

On my box with Mozilla and the FlashBlock plug-in

a Flash presentation looks like a square with a stylized F in the
middle.
On a Flash site, that's all I see.

Michael and I seem to have had similar experiences with Flash.
In my years on the Web, I have only seen only 1 Flash presentation
what I thought was worth the bandwidth:
A company's HTML page had 6 links, each of which showed
a colorized line-drawing animation of part of their process.
Vector graphics is what .SWF does well,
but few who use Flash are doing that.
Mostly Flash is someone trying to impress you with how cool he is.
(Rarely is he cool.)

Encountering Flash reminds me of when my non-techie friends
who had recently gotten an Internet connection and had figured out
email
wanted to see what the Web was about.
I was with them when they went to the site of an acquaintance
where they encountered a link to a video.
To view it they would have to download and install a VIVO player.

No thanks. I can do without proprietary formats
and yet another install every time I try to do something.

From now on, I'll just assume whatever you say is wrong

I'm crushed.

 

[HC]

Hey, Garth, what I've got right now is the circuit as I've described it
with decent-sized heatsink on it and it's working well. I'm leaving it
on the bench setup running almost 24x7 (well, as much 24x7 as there is
in between yesterday sometime and today <grin&gt with the only exception
of that I shut it off when I leave the house (since I work out of the
house that's not much down time). So far it's charged the battery
quickly and yet the battery/housing doesn't seem to be getting warm
(which it would, I think, if it was hurting it). The LM317 get's warm,
but with the larger heatsink it's not unpleasant to touch (like it was
by itself).

If I understand your most recent post, though, you're suggesting that I
run two LM317's in series? One as a constant voltage supply and one as
a constant current supply?

Thank you again for your time and help.

--HC

 

[Robert Monsen]

JeffM wrote:

I went to the site again.
Guess what--it's not a Flash site any more.
So, do those guys read this group?
Were they coincidently trying something foolish
at the exact moment they were getting free advertisement here?
JeffM

So, you have been whining about this site
without having tried it recently
Robert Monsen


I didn't know it existed until you mentioned it.
I followed YOUR LINK.
On my return visit the next day (after Googling them),
it appears they had returned to normal HTML.

No, Fred A has pointed out that I typed in an 'e' by mistake. There were
two links in my message, one of which was typed properly, the other of
which was typed incorrectly. Thus, which link one clicked on defined
which side of the argument one was on, and neither side understood what
the other was talking about.

The site 'futurelec', with the 'e', uses flash. I dont' know what that
site is, and don't care to. The component/board prototype one, named
futurlec, doesn't. Thus, the entire argument is due to my faulty typing
skills and your heated reaction to seeing (or not seeing, I guess) a
flash site, which I thought was totally unjustified, because I hadn't
had any problem with them...

Somewhat comical. Apologies for starting a war.

--
Regards,
Robert Monsen

"Your Highness, I have no need of this hypothesis."
- Pierre Laplace (1749-1827), to Napoleon,
on why his works on celestial mechanics make no mention of God.

 

[fengjianqing]

So if everyone interesting for Chinese products just contact with me. We
can help you.
Our products include printed circuit boards, inverter, solar charge
regulator, DC lamp, converter, adapter, etc.
If you need such products, please contact with me.
Best regards,
Feng

 

[John Fields]

On Thu, 17 Mar 2005 09:14:02 -0500, "fengjianqing"
<fjq@qingdaonews.com> wrote:

So if everyone interesting for Chinese products just contact with me. We
can help you.
Our products include printed circuit boards, inverter, solar charge
regulator, DC lamp, converter, adapter, etc.
If you need such products, please contact with me.

---
Are any of your products infringing on US Patents?

--
John Fields

 

[Lord Garth]

"HC" <hboothe@gte.net> wrote in message
news:1111045410.804972.224640@g14g2000cwa.googlegroups.com...

Hey, Garth, what I've got right now is the circuit as I've described it
with decent-sized heatsink on it and it's working well. I'm leaving it
on the bench setup running almost 24x7 (well, as much 24x7 as there is
in between yesterday sometime and today <grin&gt with the only exception
of that I shut it off when I leave the house (since I work out of the
house that's not much down time). So far it's charged the battery
quickly and yet the battery/housing doesn't seem to be getting warm
(which it would, I think, if it was hurting it). The LM317 get's warm,
but with the larger heatsink it's not unpleasant to touch (like it was
by itself).

If I understand your most recent post, though, you're suggesting that I
run two LM317's in series? One as a constant voltage supply and one as
a constant current supply?

Thank you again for your time and help.

--HC

Sorry, I'm running today...

Yes, that is what I'm suggesting...

 

[Fred Abse]

On Wed, 16 Mar 2005 21:35:52 +0100, Roger Johansson wrote:

Useless flash animation, he could have shown the same phone numbers with
a 100 byte pure text file.

You'd be doing some spotty-faced web "designer" out of his exorbitant fee

--
"Electricity is of two kinds, positive and negative. The difference
is, I presume, that one comes a little more expensive, but is more
durable; the other is a cheaper thing, but the moths get into it."
(Stephen Leacock)

 

[Roger Johansson]

Fred Abse <excretatauris@cerebrumconfus.it> wrote:

Useless flash animation, he could have shown the same phone numbers
with a 100 byte pure text file.

You'd be doing some spotty-faced web "designer" out of his exorbitant
fee

Yeah, probably.



--
Roger J.

 

[John Fields]

On Fri, 18 Mar 2005 08:26:16 +1100, Franc Zabkar
<fzabkar@optussnet.com.au> wrote:

On Thu, 17 Mar 2005 10:12:12 -0600, John Fields
jfields@austininstruments.com> put finger to keyboard and composed:

Notice that Ippolito took it upon _himself_ to stop a legal
transmission which I'm paying good money to supposedly be able to do.

What do y'all think about that?

I have no problem with that, it just sounds like a bit of friendly
advice to me.

---
Friendly advice is one thing, blocking a legitimate post is quite
another.
---

He's merely restating accepted Usenet practice.

---
No, accepted Usenet practice is _not_ cancelling a post because of a
breach of netiquette.
---

BTW, it's also considered bad netiquette to crosspost excessively (I had to
resend this message because of "non-existent newsgroups").

---
Just because your ISP doesn't carry sbcglobal.help.tech.newsgroups
doesn't mean it doesn't exist.
---

If I were testing my Usenet access, I'd just send a regular message,
or reply to an existing thread. If the message doesn't appear in my
normal newsfeed, then I'd look for it at Google Groups. BTW, I don't
necessarily agree with all the netiquette guidelines, but I observe
them anyway. I reckon if I can annoy the least number of people my
life will be a lot easier.

---
Yeah, goos idea. That makes it _really_ convenient for whoever's
pushing you into the oven.

--
John Fields

 

[richard]

Hello Bryan,

have a look at the CAD program TARGET3001! (www.target3001.com). It has
all the functions of schematic entry, layout, simulation, gerber
generator and more. I like the one window user interface and there is a
trial version.
...richard

 

[Rich Grise]

On Thu, 17 Mar 2005 09:14:02 -0500, fengjianqing wrote:

So if everyone interesting for Chinese products just contact with me. We
can help you.
Our products include printed circuit boards, inverter, solar charge
regulator, DC lamp, converter, adapter, etc. If you need such products,
please contact with me. Best regards,
Feng

If I give you an idea for a billion-dollar seller, do I get a piece
of the action?

Thanks,
Rich

 

[Rich Grise]

On Thu, 17 Mar 2005 12:21:45 -0700, Bryan wrote:

Hello one and all.

I have been looking into building a "very" sensitive EMF detector due to
issues with power lines in the area. I am sorry to say that I have no REAL
idea on how to do it.

You could check with some of the strawberry growers who are using the
whole corridor under the hi-line alongside I-605. They might know
something about the effects of power line induction.

Good Luck!
Rich

 

[fengjianqing]

NO!

 

[fengjianqing]

Yes! Sure! If you can give!