Ready-built ESR meter- I need *your* opinion on price.

B

Bob Parker

Guest
G'day,
A good friend of mine in Europe is planning to manufacture and sell
an improved version of the ESR meter I designed. Problem is, he's not
sure how much it should sell for.
I've got a photo, some details of it and what I think is a good
price at http://bob.parker.web1000.com/euroesr.htm
Could you please take a look and give me your valuable comments?
Thanks! :)

Cheers,
Bob

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Bob Parker <bobp@bluebottle.com> writes:

G'day,
A good friend of mine in Europe is planning to manufacture and sell
an improved version of the ESR meter I designed. Problem is, he's not
sure how much it should sell for.
I've got a photo, some details of it and what I think is a good
price at http://bob.parker.web1000.com/euroesr.htm
Could you please take a look and give me your valuable comments?
Thanks! :)
Click to expand...
But I thought yours was perfect. :)

What's different besides the much cooler case and better test leads?

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"Sam Goldwasser" <sam@saul.cis.upenn.edu> wrote in message
news:6wvfsmwtb4.fsf@saul.cis.upenn.edu...
Bob Parker <bobp@bluebottle.com> writes:

G'day,
A good friend of mine in Europe is planning to manufacture and sell
an improved version of the ESR meter I designed. Problem is, he's not
sure how much it should sell for.
I've got a photo, some details of it and what I think is a good
price at http://bob.parker.web1000.com/euroesr.htm
Could you please take a look and give me your valuable comments?
Thanks! :)

But I thought yours was perfect. :)

What's different besides the much cooler case and better test leads?
Click to expand...
Hi Bob,
I think your suggested price , BUILT and CALIBRATED!!! of $80 USD is
fantastic. Considering that the best price that I have seen for the current
built and tested version of the DS ESR meter is around $99 USD. And it
doesn't have the input protection and the nice test leads!!
If I didn't already have one of the current version, I'd certainly buy one.
That is, unless the new version were to be offered in kit form too.

Cheers,
--
Tweetldee
Tweetldee at att dot net (Just subsitute the appropriate characters in the
address)

Time is what keeps everything from happening all at once.
 
I have both the Capacitor Wizard and the CapAnalyzer 88A and paid $180
for each..... Based on that, I would say you price is very
reasonable.... Good Luck...... Bill



On Mon, 25 Aug 2003 08:03:43 +1000, Bob Parker <bobp@bluebottle.com>
wrote:

G'day,
A good friend of mine in Europe is planning to manufacture and sell
an improved version of the ESR meter I designed. Problem is, he's not
sure how much it should sell for.
I've got a photo, some details of it and what I think is a good
price at http://bob.parker.web1000.com/euroesr.htm
Could you please take a look and give me your valuable comments?
Thanks! :)

Cheers,
Bob

Hate spam? Go to http://www.bluebottle.com (It's free)
Click to expand...
 
Have you got a chart for battery internal resistance?



"Bob Parker" <bobp@bluebottle.com> wrote in message
news:p5dikv42ppu6r0grmgj7qhk2qdblgu2vsa@4ax.com...
: G'day,
: A good friend of mine in Europe is planning to manufacture and sell
: an improved version of the ESR meter I designed. Problem is, he's not
: sure how much it should sell for.
: I've got a photo, some details of it and what I think is a good
: price at http://bob.parker.web1000.com/euroesr.htm
: Could you please take a look and give me your valuable comments?
: Thanks! :)
:
: Cheers,
: Bob
:
: Hate spam? Go to http://www.bluebottle.com (It's free)
 
BJohnson < Johnswr@(nospam)optonline.net> wrote:

I have both the Capacitor Wizard and the CapAnalyzer 88A and paid $180
for each..... Based on that, I would say you price is very
reasonable.... Good Luck...... Bill
Click to expand...
Thanks Bill and everyone else for your very positive feedback. I'll
pass it all on to my friend to reassure him that he will be able to
make a bit of a profit from making his meters after all. :)

Regards,
Bob

Hate spam? Go to http://www.bluebottle.com (It's free)
 
I've got an "under the hood" photo of the innards of that ESR meter
on that web page now, so you can see how well it's constructed. Hit
Ctrl/refresh if you can't see it.

Bob

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On Tue, 26 Aug 2003 00:33:43 +1000, Bob Parker <bobp@bluebottle.com>
wrote:

Sam Goldwasser <sam@saul.cis.upenn.edu> wrote:

But I thought yours was perfect. :)

Whatever made you think that? :) If I'd known back in 1995 that it
would become well-known, I'd have put more effort into refining it a
bit more. I thought it would be just another obscure unpopular
magazine project which would be forgotten in 6 months.

What's different besides the much cooler case and better test leads?

Big protection diodes to stop large charged caps with lots of volts
from damaging the circuitry i.e. blowing up the microcontroller.
Better displays, longer auto switch-off time, high quality components
and construction. Otherwise it's essentially the same as the existing
meter....
Click to expand...
The only problem I have with it is that there is nothing to limit the
discharge current through the diodes. Exceed the dv/dt rating of the
capacitor under test and it might be damaged.

The meter is supposed to find bad caps, not create them.

JMHO

John
 
G'day Mate!
Yeah, that is a concern. These kinds of things are always a
compromise... put in better protection and then it won't fit in the
nice small case.
The (re)designer of the meter into this form decided that
compactness outweighed the simplicity of the protection circuitry. If
a cap is damaged by a massive discharge current pulse, at least the
ESR meter should show that it needs to be replaced after the
accident....

Cheers,
Bob

PS- I haven't forgotten about you know what. This internet is the
worst distractor from getting anything done which has ever been
invented. :(


John Bachman <jaybee99@spamcop.net> wrote:
The only problem I have with it is that there is nothing to limit the
discharge current through the diodes. Exceed the dv/dt rating of the
capacitor under test and it might be damaged.

The meter is supposed to find bad caps, not create them.

JMHO

John
Click to expand...

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On Tue, 26 Aug 2003 04:41:29 +1000, Bob Parker <bobp@bluebottle.com> wrote:

I've got an "under the hood" photo of the innards of that ESR meter
on that web page now, so you can see how well it's constructed. Hit
Ctrl/refresh if you can't see it.
Click to expand...
I cant see anything :-((
http://bob.parker.web1000.com/euroesr.htm

just keeps bringing up http://www.web1000.com/ main page

help?

Geo
 
Hi Geo,
I dunno what the problem would be. That site's in the USA and I'm
able to access it OK from all the way down here in Australia.
Is anyone else having trouble seeing it?

Bob



Geo <gm4xus@yahoo.c?.uk> wrote:

On Tue, 26 Aug 2003 04:41:29 +1000, Bob Parker <bobp@bluebottle.com> wrote:

I've got an "under the hood" photo of the innards of that ESR meter
on that web page now, so you can see how well it's constructed. Hit
Ctrl/refresh if you can't see it.

I cant see anything :-((
http://bob.parker.web1000.com/euroesr.htm

just keeps bringing up http://www.web1000.com/ main page

help?

Geo
Click to expand...

Hate spam? Go to http://www.bluebottle.com (It's free)
 
Bob Parker <bobp@bluebottle.com> writes:

Hi Geo,
I dunno what the problem would be. That site's in the USA and I'm
able to access it OK from all the way down here in Australia.
Is anyone else having trouble seeing it?
Click to expand...
Site works fine here if with (gasp!) java turned off. :)

BTW, how large a charged cap do you figure those diodes will survive?

Maybe they should be replaceable like a fuse. :)

--- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: The email address in this message header may no longer work. To
contact me, please use the Feedback Form at repairfaq.org. Thanks.
 
On Wed, 27 Aug 2003 01:52:06 GMT, jpero@sympatico.ca (Jason D.) wrote:

Site works fine here if with (gasp!) java turned off. :)

BTW, how large a charged cap do you figure those diodes will survive?

Maybe they should be replaceable like a fuse. :)

Sam,

Well, here's this one to consider.

Snap!

One dead micro and had to order two micros along another ESR meter kit
for home, so ESR meter can stay at work, kept micro as spare for
either of my two Bob Parker's ESR meters. This happened on a modest
decent cap, guessing 220uF 50V.

Oh, Diodes did work channeling most of jolts, didn't die but the surge
still escaped, knocking out that micro. When I saw spark then I
looked down at meter display was blank. DANG! Good thing both ICs
are socketed.
Click to expand...
Try our DSESRSavr. It is a small circuit board that protects the
circuitry including the micro from damage from charged caps. Lets the
meter work fine, controls the cap discharge current and protects the
ESR all at once. It will fit inside the DS meter - a little snug but
it fits.

We developed it for the Capacitor Wizard which is not as rugged as the
DS meter and then created one for the DS meter also.

See it at www.anatekcorp.com/testequipment/dsesrsavr.htm


John
 
Hi again Bob: I'll give you just 3 guesses which ESR meter can and
has checked the ESR of fully charged batteries in ? ;-)


Bob Parker <bobp@bluebottle.com> wrote in message news:<fj7kkv0mo16s3ot1lg0q36ptcug9kkksbn@4ax.com>...
"Eric" <some1@clear.net.nz> wrote:

Have you got a chart for battery internal resistance?

Hmmm,
If you look closely at the photo, it says "ESR/Low Ohms Meter" on
it. I never even thought about it being used for checking batteries
until a certain Phil Allison discovered that use for it.
No, I don't have a chart of battery internal resistances, but you
can see Phil's one at http://www.flippers.com/esrkthnt.html#battery
This European meter can't check batteries anyway because the
protection diodes are connected directly across the test leads.


Hate spam? Go to http://www.bluebottle.com (It's free)
Click to expand...
 
For the information of anyone still watching this old thread, that ESR
meter is now being sold. Full details and user manual are available at
http://clientes.netvisao.pt/greenpal/

Bob


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"Bob Parker" <bobp@bluebottle.com> wrote in message
news:92q0nvsl24ro7fofb7140tcvkoprvrgbjr@4ax.com...
For the information of anyone still watching this old thread, that ESR
meter is now being sold. Full details and user manual are available at
http://clientes.netvisao.pt/greenpal/

Bob
Click to expand...

Bob, are we to understand that this version is not available outside the
countries listed on the order page (Austria, Belgium, Denmark, Finland,
France, Italy, Luxembourg, Spain, Sweden and Switzerland)?

--
Tweetldee
Tweetldee at att dot net (Just subsitute the appropriate characters in the
address)

Time is what keeps everything from happening all at once.
 
We sell assembled kits here in Canada...but ours is the original DS
kit... Looks much the same AFAIKS, except for case - and he has added
the two high current diodes across the inputs to protect the meter
from charged capacitors

http://www.flippers.com/esrkthnt.html

His box looks much nicer than the DS one though...

John :-#)#

On Wed, 24 Sep 2003 00:46:45 GMT, "Tweetldee" <dgmason99@att99.net>
wrote:

"Bob Parker" <bobp@bluebottle.com> wrote in message
news:92q0nvsl24ro7fofb7140tcvkoprvrgbjr@4ax.com...
For the information of anyone still watching this old thread, that ESR
meter is now being sold. Full details and user manual are available at
http://clientes.netvisao.pt/greenpal/

Bob


Bob, are we to understand that this version is not available outside the
countries listed on the order page (Austria, Belgium, Denmark, Finland,
France, Italy, Luxembourg, Spain, Sweden and Switzerland)?
Click to expand...
(Please post followups or tech enquires to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
 
Bob, are we to understand that this version is not available outside the
countries listed on the order page (Austria, Belgium, Denmark, Finland,
France, Italy, Luxembourg, Spain, Sweden and Switzerland)?
Click to expand...
G'day,
As far as I know, he's selling them to anyone anywhere who wants
one. That list of countries only applies to one particular method of
payment. I've told him that what he's written is confusing people and
to please change it. This is his first attempt at doing a website,
plus his English isn't perfect. :)

Cheers,
Bob
 
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