ESR meter?

[Roy J. Tellason]

I see a *lot* of references to testing ESR on caps in stuff lately. I don't
do this for a living any more, and sure as heck don't plan to go back to
it any time soon. Got a Simpson 260 that's as old as I am (and still
working well in spite of much abuse , a coupld of DVMs, a Tek 2246
scope, a B&K curve tracer, and a B&K cap meter, don't remember the model
but it's the first LCD display autoranging unit they came out with, maybe
20 years ago.

What I'm wondering is if there's some way for me to measure or do go/no-go
tests on caps for ESR without having to invest in equipment to do so?
Maybe some ciruit that I could build, that wouldn't be too complicated?
Is it possible to home-brew this stuff?

This sounds like something I'd see a use for, but definitely not something I
want to spend any bucks on at this point in time.

 

[Ace]

Check out Dick Smith site (dont know the url off hand but I always find it
with Google) they have an excellent ESR meter as a kit for about $AU80 it
measures ESR in circuit and out of circuit. I beleive they do mailorder. I
dont service for a living but I built one simply to fix my own stuff.

 

[Bob Parker]

Hi Roy,
What you're looking for is the "99 Cent ESR Test Adaptor". You can
see it at http://octopus.freeyellow.com/99.html
I hope this does what you want.

Cheers,
Bob

 

[Joe Rongen]

"Roy J. Tellason" <rtellason@DONTSPAM MEpa.net>
wrote in message
[snip]

What I'm wondering is if there's some way for me to measure or do go/no-go
tests on caps for ESR without having to invest in equipment to do so?
Maybe some ciruit that I could build, that wouldn't be too complicated?
Is it possible to home-brew this stuff?

"QST" September, 2003 has just what you want.
(QST mag. is available in many libraries.)
Look for the article "How to test for capacitor ESR."

You'll need a function generator, (or build your own
simple 66 - 100 kHz sinewave oscilator) an oscilloscope
and this rather well explained article - a two resistor
circuit in an enclosure with two connecters.
It's excellent for the occasional user. Have fun!

Or have a look at www.buyanyaccessory.com
(Canada: Global Electronics Supplies Inc)
They have an in-line capacitor meter (1 - 10K MFD) on
sale for Can$ 39.90 but are on a ~ couple weeks back order.

Regards Joe

"We'll never survive!"
"Nonsense! You're only saying that because no one ever has."

 

[Roy J. Tellason]

Hi Roy,
What you're looking for is the "99 Cent ESR Test Adaptor". You can
see it at http://octopus.freeyellow.com/99.html
I hope this does what you want.

Nice...!

That's exactly the sort of thing that I was looking for. I probably already
have all the parts needed to build either version of that on hand here...

 

[John Robertson]

Bad link for buyany... have you a working one? And I can't find Global
Electronics without having a clue as to which city it might be in...

Thanks!

John :-#)#

"Roy J. Tellason" <rtellason@DONTSPAM MEpa.net>
wrote in message
[snip]

What I'm wondering is if there's some way for me to measure or do go/no-go
tests on caps for ESR without having to invest in equipment to do so?
Maybe some ciruit that I could build, that wouldn't be too complicated?
Is it possible to home-brew this stuff?

"QST" September, 2003 has just what you want.
(QST mag. is available in many libraries.)
Look for the article "How to test for capacitor ESR."

You'll need a function generator, (or build your own
simple 66 - 100 kHz sinewave oscilator) an oscilloscope
and this rather well explained article - a two resistor
circuit in an enclosure with two connecters.
It's excellent for the occasional user. Have fun!

Or have a look at www.buyanyaccessory.com
(Canada: Global Electronics Supplies Inc)
They have an in-line capacitor meter (1 - 10K MFD) on
sale for Can$ 39.90 but are on a ~ couple weeks back order.

Regards Joe

"We'll never survive!"
"Nonsense! You're only saying that because no one ever has."

(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."

 

[john]

www.globalsemi.com

Mississauga Ontario

kip


--
"Watch the return E-Mail addy its false"

Bad link for buyany... have you a working one? And I can't find Global
Electronics without having a clue as to which city it might be in...

Thanks!

John :-#)#

"Roy J. Tellason" <rtellason@DONTSPAM MEpa.net>
wrote in message
[snip]

What I'm wondering is if there's some way for me to measure or do go/no-go
tests on caps for ESR without having to invest in equipment to do so?
Maybe some ciruit that I could build, that wouldn't be too complicated?
Is it possible to home-brew this stuff?

"QST" September, 2003 has just what you want.
(QST mag. is available in many libraries.)
Look for the article "How to test for capacitor ESR."

You'll need a function generator, (or build your own
simple 66 - 100 kHz sinewave oscilator) an oscilloscope
and this rather well explained article - a two resistor
circuit in an enclosure with two connecters.
It's excellent for the occasional user. Have fun!

Or have a look at www.buyanyaccessory.com
(Canada: Global Electronics Supplies Inc)
They have an in-line capacitor meter (1 - 10K MFD) on
sale for Can$ 39.90 but are on a ~ couple weeks back order.

Regards Joe

"We'll never survive!"
"Nonsense! You're only saying that because no one ever has."

(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."

 

[john]

Part number at Global is

MUL 3333

kip

--
"Watch the return E-Mail addy its false"

Bad link for buyany... have you a working one? And I can't find Global
Electronics without having a clue as to which city it might be in...

Thanks!

John :-#)#

"Roy J. Tellason" <rtellason@DONTSPAM MEpa.net>
wrote in message
[snip]

What I'm wondering is if there's some way for me to measure or do go/no-go
tests on caps for ESR without having to invest in equipment to do so?
Maybe some ciruit that I could build, that wouldn't be too complicated?
Is it possible to home-brew this stuff?

"QST" September, 2003 has just what you want.
(QST mag. is available in many libraries.)
Look for the article "How to test for capacitor ESR."

You'll need a function generator, (or build your own
simple 66 - 100 kHz sinewave oscilator) an oscilloscope
and this rather well explained article - a two resistor
circuit in an enclosure with two connecters.
It's excellent for the occasional user. Have fun!

Or have a look at www.buyanyaccessory.com
(Canada: Global Electronics Supplies Inc)
They have an in-line capacitor meter (1 - 10K MFD) on
sale for Can$ 39.90 but are on a ~ couple weeks back order.

Regards Joe

"We'll never survive!"
"Nonsense! You're only saying that because no one ever has."

(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."

 

[Joe Rongen]

Bad link for buyany... have you a working one? And I can't find Global
Electronics without having a clue as to which city it might be in...

Then try: http://www.globalsemi.com
They are located in Mississauga, Ontario.
Phone toll free: 1-800-668-8776

The ESR meter to look for (in their Fall Specials) is model: MUL-333

 

[Bill Bolle]

Bob Parker wrote:




Nice...!

That's exactly the sort of thing that I was looking for. I probably already
have all the parts needed to build either version of that on hand here...

I built the 99 Cent tester and it works great for me. I've fixed my
DVD player, a monitor, a police scanner and a TV with it. It's quick
and cheap but you do have to have a scope to make it work, this will
prevent it's usage by a lot of home techs. You could possibly use a
low reading voltmeter but most VOMs or DVMs won't read down into the
millivolts that this thing reads in. Since you already have a scope
you're in great shape to use this handy little device. It cost less
then ten bucks to build.
Hope this helps-------Bill

 

[Roy J. Tellason]

I built the 99 Cent tester and it works great for me. I've fixed my
DVD player, a monitor, a police scanner and a TV with it. It's quick
and cheap but you do have to have a scope to make it work, this will
prevent it's usage by a lot of home techs. You could possibly use a
low reading voltmeter but most VOMs or DVMs won't read down into the
millivolts that this thing reads in. Since you already have a scope
you're in great shape to use this handy little device. It cost less
then ten bucks to build.
Hope this helps-------Bill

Yeah. The only problem I have at this point in time is finding somewhere in
this mess to actually set that scope up! Currently it's "sleeping" in the
bottom-most (deep) drawer of my big red Snap-On boxes... And I don't
think that there's enough horizontal surface in here anywhere at the moment
to set it up! There's a 2 x 2 foot area on my desk that's relatively
clear, and that's where I'd figured on setting one of those monitors to
work on it...

Overly cluttered office is too mild a description.

 

[Bill Bolle]

Bill Bolle wrote:




Yeah. The only problem I have at this point in time is finding somewhere in
this mess to actually set that scope up! Currently it's "sleeping" in the
bottom-most (deep) drawer of my big red Snap-On boxes... And I don't
think that there's enough horizontal surface in here anywhere at the moment
to set it up! There's a 2 x 2 foot area on my desk that's relatively
clear, and that's where I'd figured on setting one of those monitors to
work on it...

Overly cluttered office is too mild a description.

Don't feel like the "Lone Ranger". I drag all that stuff out of the
closet and set it up on the dining room table, find the bad part,
replace it and then drag all that stuff back into the catacombs. It
takes almost as long "setting up" as it takes to trouble shoot and
repair the apparatus. Nothing comes easy anymore!! However, I feel
that I get a lot more information out of the display on the scope then
I would watching a couple of LEDs blinking on a numerical scale. The
waveform is important also, not just the amplitude----you will see
what I mean after you have used the tester a few times.
Bill