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Re: recommended ESR meters these days

ArtekManuals <manuals@...>
 

There was at time I would agree with you but right now I have 2 dozen (fix-it) projects that will be more fun than building an ESR meterĀ  kit thanks though

Dave

On 3/12/2020 8:54 PM, tgerbic wrote:
Folks,
ESR meters (AC low ohm meter) are very easy to build and there are several good schematics on the web. I built one from parts around my lab in 2007, and have not had a need to fix or replace it. It has two ranges 0-10 ohms and 0 to 30 ohms and measures accurately down to .05 ohms at the lower resistance third of the scales. It uses an analog meter and fits in a 2" X 2" by 4" metal box. I created the meter face in powerpoint (before I got familiar with the "Meter" program). Ended up pretty close to zero cost. I based mine off the IZ7ATH style circuit ( https://www.qsl.net/iz7ath/web/02_brew/15_lab/06_esr/index.htm ) but there are many versions to choose from. If concerned about ESR, a 0 to 5 ohm range with around 0.05 ohm accuracy at the 0 to 1 ohm range (.5 ohm above that) is generally all that is necessary.

In 2004 I built a low ohms meter (DC ohmmeter) which goes well with the ESR meter and uses home make kelvin clips. It has ranges of .2 ohms, 2 ohms and 20 ohms. It has resolution to .0025 ohms on the lowest scale and very accurate to this resolution compared to my calibrated HP 3456A in 4 wire mode.

While there are many AC and DC low ohms meters on the market, buying one is not as much fun as building one and a built one could easily be fixed if it ever fails. In my case I already have several good LCR meters from HP and B&K so another one just to get ESR would be overkill.

Regards

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Re: recommended ESR meters these days

tgerbic
 

Folks,
ESR meters (AC low ohm meter) are very easy to build and there are several good schematics on the web. I built one from parts around my lab in 2007, and have not had a need to fix or replace it. It has two ranges 0-10 ohms and 0 to 30 ohms and measures accurately down to .05 ohms at the lower resistance third of the scales. It uses an analog meter and fits in a 2" X 2" by 4" metal box. I created the meter face in powerpoint (before I got familiar with the "Meter" program). Ended up pretty close to zero cost. I based mine off the IZ7ATH style circuit ( https://www.qsl.net/iz7ath/web/02_brew/15_lab/06_esr/index.htm ) but there are many versions to choose from. If concerned about ESR, a 0 to 5 ohm range with around 0.05 ohm accuracy at the 0 to 1 ohm range (.5 ohm above that) is generally all that is necessary.

In 2004 I built a low ohms meter (DC ohmmeter) which goes well with the ESR meter and uses home make kelvin clips. It has ranges of .2 ohms, 2 ohms and 20 ohms. It has resolution to .0025 ohms on the lowest scale and very accurate to this resolution compared to my calibrated HP 3456A in 4 wire mode.

While there are many AC and DC low ohms meters on the market, buying one is not as much fun as building one and a built one could easily be fixed if it ever fails. In my case I already have several good LCR meters from HP and B&K so another one just to get ESR would be overkill.

Regards


Re: recommended ESR meters these days

ArtekManuals <manuals@...>
 

Magnus

Only goes down to 1uf ...deal breaker

Dave

On 3/12/2020 6:02 PM, magnustoelle via Groups.Io wrote:
Good Day Dave,
I am using this one from Peak Elektronic Design in the UK for several years now. Very reliable, small, easy to use and itĀ discharges caps safely also:
https://www.peakelec.co.uk/acatalog/esr70-capacitor-esr-meter.html

Cheers,
Magnus

Took out my (apparently not so) trusty ESR meter the other day and it
eyes had rolled back in its head and no amount of CPR would revive it..
Anyone bought one _*RECENTLY *_that they can recommend or warn me away from?

Dave
manuals@...
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Re: recommended ESR meters these days

Richard Solomon <dickw1ksz@...>
 

I bought an MESR-100 V2 off that auction
site. Works well for me.

73, Dick, W1KSZ

On Thu, Mar 12, 2020, 5:41 PM ArtekManuals <manuals@...> wrote:

Ancel

The item description does list the L and C ranges and does not
specifically indicate it is an ESR meter ???
Dave


On 3/12/2020 7:56 PM, mosaicmerc via Groups.Io wrote:
I have used this for a few years.

https://www.amazon.com/Semoic-Rechargeable-Resistance-Voltmeter-Impedance/dp/B07R5LSM8N/ref=sr_1_3



Ancel



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Re: recommended ESR meters these days

ArtekManuals <manuals@...>
 

David

The one that died was a DE5000 ...8^(

Dave

On 3/12/2020 6:00 PM, David Holland wrote:
The DER DE-5000 appears to be still available:

https://www.amazon.com/5000-Handheld-LCR-Meter-accessories/dp/B00S298KJO

Mine isn't recent purchase (2017) but as far as I know, they're some of the
better LCR (and by proxy ESR) meters...

David


On Thu, Mar 12, 2020 at 5:57 PM ArtekManuals <manuals@...>
wrote:

Took out my (apparently not so) trusty ESR meter the other day and it
eyes had rolled back in its head and no amount of CPR would revive it..
Anyone bought one _*RECENTLY *_that they can recommend or warn me away
from?

Dave
manuals@...

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Dave
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Re: recommended ESR meters these days

ArtekManuals <manuals@...>
 

That should say DOESNT list the L and C ranges ???

On 3/12/2020 8:41 PM, ArtekManuals wrote:
Ancel

The item description does list the L and C ranges and does not specifically indicate it is an ESR meter ???
Dave


On 3/12/2020 7:56 PM, mosaicmerc via Groups.Io wrote:
I have used this for a few years.

https://www.amazon.com/Semoic-Rechargeable-Resistance-Voltmeter-Impedance/dp/B07R5LSM8N/ref=sr_1_3


Ancel



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Re: recommended ESR meters these days

ArtekManuals <manuals@...>
 

Ancel

The item description does list the L and C ranges and does not specifically indicate it is an ESR meter ???
Dave

On 3/12/2020 7:56 PM, mosaicmerc via Groups.Io wrote:
I have used this for a few years.

https://www.amazon.com/Semoic-Rechargeable-Resistance-Voltmeter-Impedance/dp/B07R5LSM8N/ref=sr_1_3


Ancel


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Re: recommended ESR meters these days

Bob Albert
 

My GR1658 bridge reads ESR at either of two frequencies.

On Thursday, March 12, 2020, 04:56:42 PM PDT, mosaicmerc via Groups.Io <mosaicmerc=yahoo.com@groups.io> wrote:

I have used this for a few years.

https://www.amazon.com/Semoic-Rechargeable-Resistance-Voltmeter-Impedance/dp/B07R5LSM8N/ref=sr_1_3


Ancel


Re: recommended ESR meters these days

mosaicmerc
 


Re: Tek video: A Precision CRT (1955)

Roy Thistle
 

Hi Toby:
I've watched that very carefully, many times.
It requires some extrapolation on what they don't discuss; but, the pictures are really worth a thousand words.
If you are interested in CRT technology it's really a good view.
Best regards.


Re: I've been hacked

Roy Thistle
 

On Thu, Mar 12, 2020 at 10:21 AM, Glydeck wrote:


I know there are tactics and methods employed by law enforcement that many of
us do not know about.
I'd say... there are tactics and methods (including repurposed military software) that law enforcement doesn't know about.
Fortunately, 99% of "viruses, worms, trojans, rootkits, key monitors, ... or any malware) is weakly implemented, and often requires a lot of phising, on the part of the perpetrators to activate. They are fairly easily cleaned out... or reinstalled over.
The other 1% of this malware is the devil's work.
It's well known, most of those guys, doing that work, are part of very liberally funded militaries. If these type want in... they are getting in. Fortunately yet again... they mostly and largely are not interest in the "average guy"... at least, where most of us live.
The only way to mostly avoid it all is to go off grid (no Internet, no phone, no computer) I know individuals... yes some are cranks, or have issues... but: others are highly technically competent, and highly educated individuals. They choose not to be connected... at all.
Roy.


Re: recommended ESR meters these days

Greg Muir
 

The Peak products are all very good. I made up a field kit containing several Peak meters of various flavors. They are not quite lab grade but are very close to comparing with regards to accuracy. And they are simple to operate.

https://www.peakelec.co.uk/acatalog/esr70-capacitor-esr-meter.html

Greg


Re: recommended ESR meters these days

Ken Eckert
 

Personally I like the Sencore LC-77, LC102 or LC103. Very little difference
between a LC-77 and a LC-102

On Thu, Mar 12, 2020 at 2:57 PM ArtekManuals <manuals@...>
wrote:

Took out my (apparently not so) trusty ESR meter the other day and it
eyes had rolled back in its head and no amount of CPR would revive it..
Anyone bought one _*RECENTLY *_that they can recommend or warn me away
from?

Dave
manuals@...

--
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Manuals@...
www.ArtekManuals.com


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Re: recommended ESR meters these days

toby@...
 

On 2020-03-12 5:57 PM, ArtekManuals wrote:
Took out my (apparently not so) trusty ESR meter the other day and it
eyes had rolled back in its head and no amount of CPR would revive it..
Anyone bought one _*RECENTLY *_that they can recommend or warn me away
from?
I have been using this one. Seems to work well for LCR + ESR.

http://lcr.is-best.net/en/?i=1

No affiliation, just satisfied customer.

--Toby


Dave
manuals@...


Re: recommended ESR meters these days

toby@...
 

On 2020-03-12 5:57 PM, ArtekManuals wrote:
Took out my (apparently not so) trusty ESR meter the other day and it
eyes had rolled back in its head and no amount of CPR would revive it..
Anyone bought one _*RECENTLY *_that they can recommend or warn me away
from?
I have been using this one. Seems to work well for LCR + ESR.

http://lcr.is-best.net/en/?i=1

No affiliation, just satisfied customer.

--Toby


Dave
manuals@...


Re: Surprise revival of broken component of old tek scope

Edward Prest
 

Yeah, and sometimes you just have to take it apart - when able. Look in my pictures of a truly dirty pot that, after cleaning with IPA and lube - now works perfectly (dirty intensity pot in edward prest pictures). unbelievable crud..


Tek video: A Precision CRT (1955)

toby@...
 

Maybe ebay shippers would pack CRTs more carefully if they realised that
nobody makes them like this any more:

https://www.youtube.com/watch?v=q5dhfhMItQc&feature=youtu.be

Like other Tektronix manufacture videos (PCBs etc), a window into a lost
world of manufacturing.

--Toby


Re: recommended ESR meters these days

Mike D
 

I have the Peak and the DER, both work great. The DER has a lot more
functionality for the money, but the Peak is UK made and much better
construction.

Mike kd5rjz

On Thu, Mar 12, 2020, 5:10 PM Dale Chayes <dale@...> wrote:

Happy with my (few years old 2018 as I recall)
Keysight/Agilent/whateverthisweek U1731

Not inexpensive but not cheap.

Probably overkill for many.

-Dale



On Mar 12, 2020, at 15:57 , ArtekManuals <manuals@...>
wrote:

Took out my (apparently not so) trusty ESR meter the other day and it
eyes had rolled back in its head and no amount of CPR would revive it..
Anyone bought one _*RECENTLY *_that they can recommend or warn me away from?

Dave
manuals@...

--
Dave
Manuals@...
www.ArtekManuals.com


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Re: recommended ESR meters these days

Dale Chayes
 

Happy with my (few years old 2018 as I recall) Keysight/Agilent/whateverthisweek U1731

Not inexpensive but not cheap.

Probably overkill for many.

-Dale

On Mar 12, 2020, at 15:57 , ArtekManuals <manuals@...> wrote:

Took out my (apparently not so) trusty ESR meter the other day and it eyes had rolled back in its head and no amount of CPR would revive it.. Anyone bought one _*RECENTLY *_that they can recommend or warn me away from?

Dave
manuals@...

--
Dave
Manuals@...
www.ArtekManuals.com


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Re: recommended ESR meters these days

Bill Sudbrink
 

+1 on the Peak.

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of magnustoelle via Groups.Io
Sent: Thursday, March 12, 2020 6:03 PM
To: TekScopes@groups.io; TekScopes2@groups.io
Subject: Re: [TekScopes] recommended ESR meters these days

Good Day Dave,
I am using this one from Peak Elektronic Design in the UK for several years now. Very reliable, small, easy to use and it discharges caps safely also:
https://www.peakelec.co.uk/acatalog/esr70-capacitor-esr-meter.html

Cheers,
Magnus

Took out my (apparently not so) trusty ESR meter the other day and it
eyes had rolled back in its head and no amount of CPR would revive it..
Anyone bought one _*RECENTLY *_that they can recommend or warn me away from?

Dave
manuals@...

--
Dave
Manuals@...
www.ArtekManuals.com


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