Where are all the ESR meters?

You might consider traveling to a civilized country to get the work done. I hear they have very good cheap dental treatment in China, for example.

Clifford Heath.

You try it, and let me know. That is, if you survive.

--
Service to my country? Been there, Done that, and I\'ve got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

Go to the diabetes group here:

. Someplace like that, or similar, would be the more appropriate forum to discuss your health problems. SED is not the place for it, this is not a support group, and, speaking of nerve, you're way out of line unloading all your whining on SED. People get sick, suffer through great pain, and die all the time. Do you think you're the only one? You have it easy compared to a lot of people. And then all this garbage about your white trash neighborhood and everyone laughing and taunting you, sounds like something you used to do until it came home to bite you. Who the hell do you think you're fooling? I for one am sick and tired of you victim types. If you want to discuss electronics then fine, but take your excess baggage somewhere else.

Yep, Michael, Please be quiet... Fred needs all the attention ;-)

...Jim Thompson

--
|  James E.Thompson, P.E.                           |    mens     |
|  Analog Innovations, Inc.                         |     et      |
|  Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    |
|  Phoenix, Arizona            Voice:(480)460-2350  |             |
|  E-mail Address at Website     Fax:(480)460-2142  |  Brass Rat  |
|       http://www.analog-innovations.com           |    1962     |
             
         America: Land of the Free, Because of the Brave

You might go to the same site and see if there's help for Napoleon complex...

Your new, recent facade persona didn't last long.

Do you react like this because nobody gives a damn about you, but they do care about other people? Or are you simply a low-life POS as I suspect?

Okay, it's not called Napoleon complex anymore, it's Narcissistic Personality Disorder or NPD. A support group can be found here:

Well? YOU should know the way ;-)

...Jim Thompson

--
|  James E.Thompson, P.E.                           |    mens     |
|  Analog Innovations, Inc.                         |     et      |
|  Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    |
|  Phoenix, Arizona            Voice:(480)460-2350  |             |
|  E-mail Address at Website     Fax:(480)460-2142  |  Brass Rat  |
|       http://www.analog-innovations.com           |    1962     |
             
         America: Land of the Free, Because of the Brave

"low-life POS" is the short form ;-)

...Jim Thompson

--
|  James E.Thompson, P.E.                           |    mens     |
|  Analog Innovations, Inc.                         |     et      |
|  Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    |
|  Phoenix, Arizona            Voice:(480)460-2350  |             |
|  E-mail Address at Website     Fax:(480)460-2142  |  Brass Rat  |
|       http://www.analog-innovations.com           |    1962     |
             
         America: Land of the Free, Because of the Brave

A quick look at the schematic and writeup suggests that it can't untangle ESR from capacitance at low C values. The "good esr versus capacitance" chart screened on the front confirms.

Besides, this is sci.electronics.design, not sci.electronics.copy.

John

:)

fair call.

the stupidest thing I have ever seen was when I was a kid, circa 1975 - some guy asked my dad to look at his brand new stereo. He had wired

3-pin plugs to each speaker, and plugged them into the mains. oops.

Cheers Terry

Good point on the switch contact resistance. With Terry's mod, the arc will be at the probes, not in the switch. Someone asked about the loud bang when you connect the probes - I think it should be there. It adds a "feeture" to the instrument: an audible indication that when translated from "electronian" says "Hey asshole! You're probing a charged cap".

Ed

Yup, and make that to a solid tant cap and you've found a good way to have to change it.

You can also fry some other components in the process, depending on other caps that were still being charged and on the circuit.

--
Thanks,
Fred.

I can't get that group - and I suspect not many others can either :(

It looks like you could do a lot with this chip:

but perhaps that's cheating.

It has a DDS (that could generate the excitation), 1MHz 12 bit ADC and quite a fast 32 bit CPU.

--

John Devereux

I still have a couple of those surplus Radio Shack 20 second digital voice recorders. Should it yell, 'You idiot!', or have it 'Bray like the old donkey on Hee Haw'? Maybe a loud thunder clap, to go with the artificial lightning? ;-)

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

allows you to read binaries newsgroups.

--
Service to my country? Been there, Done that, and I\'ve got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

Thanks - at least I can see what others are talking about.

--

John Devereux

Your numbers don't compute for me. I'd like a 100mA signal if it worked out, but have accepted 10mA as a compromise. 1mA seems very wimpy, but assuming that, your 12V suppiy (while a pain for batteries) doesn't allow proper operation if there's very more than 12V sitting on the cap. And your 12k resistor would mean a 1-min discharge time constant with say 5000uF, yawn, waiting to get within the operating-voltage range.

I'm going for 25 ohms of discharge resistance, using another set of diodes to +/-3V rails. Of course, the rails must have a way to get rid of any excess energy.

I don't like a switch, because I don't have three hands.