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Author Topic: Homemade esr meter!  (Read 6818 times)

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Offline TitaTopic starter

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Homemade esr meter!
« on: June 15, 2013, 06:20:35 am »
Hi from Romania!
This is my first post on the forum... .and i like to present to you my homemade esr meter!
The original schematic,pcb and ideas can be find in this web site:
http://members.shaw.ca/swstuff/esrmeter.html
I have been using shockley diode for the brake rectifier ,because the 1n4148 diode was having a high voltage drop in the original schematic!!
Some pictures:
http://imageshack.us/photo/my-images/801/966k.jpg/
http://imageshack.us/photo/my-images/854/7wuz.jpg/
http://imageshack.us/photo/my-images/593/bqmx.jpg/
The two leads go to the analog multimeter!
http://imageshack.us/photo/my-images/12/multimeteryx360trd.jpg/
P.S Sorry for the crap language.. |O .right now i'm learning how to write !
« Last Edit: June 15, 2013, 06:34:31 am by Tita »
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Offline InterestedTom

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Re: Homemade esr meter!
« Reply #1 on: June 19, 2013, 03:36:33 pm »
I really like the analog approach.  And by only using one high voltage rated part you really keep the cost down, nice one. :)
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Offline TitaTopic starter

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Re: Homemade esr meter!
« Reply #2 on: June 19, 2013, 04:51:56 pm »
Thanks! ;D
Now i'm working on the second esr meter.. O0.to be more portable !
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Offline Jay_Diddy_B

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Re: Homemade esr meter!
« Reply #3 on: June 19, 2013, 05:00:23 pm »
Tita,

Here is a link to an ESR meter that I designed.

https://www.eevblog.com/forum/projects/5-transistor-esr-meter-design/msg172136/#msg172136

This is also an analog meter.

Jay_Diddy_B
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Offline TitaTopic starter

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Re: Homemade esr meter!
« Reply #4 on: June 19, 2013, 05:21:18 pm »
I will try! :-+
But my panel meter is having the sensitivity around 350uA..will work?
« Last Edit: June 19, 2013, 05:22:58 pm by Tita »
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Offline PaulAm

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Re: Homemade esr meter!
« Reply #5 on: June 19, 2013, 06:05:49 pm »
I made one of those; it's been pretty handy.

I added a LED so I could remember when the power was on and put the whole thing in a box with space for the leads.

Had to buy a Chinese meter off of ebay, but everything else was out of the junkbox.
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Offline firewalker

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Re: Homemade esr meter!
« Reply #6 on: June 19, 2013, 06:12:20 pm »
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Become a realist, stay a dreamer.

 

Offline Balaur

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Re: Homemade esr meter!
« Reply #7 on: June 19, 2013, 09:19:29 pm »
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Offline firewalker

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Re: Homemade esr meter!
« Reply #8 on: June 19, 2013, 09:26:12 pm »
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Become a realist, stay a dreamer.

 
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