Sleeper
Well-known member
I made the ESR meter that New York Dave mentioned in this thread:
http://www.groupdiy.com/index.php?topic=30545.0
I built this, it uses and easily sourced 1ma meter, and it works great.
here's a PDF Package which includes schematic, PCB layout and calibration operation info.
I made it for a pretty large trimpot format so you might have to use a sharpie and modify this to fit what you have.
:
I just noticed on the overlay the IC is marked LM325 Osmond PCB likes to increment part numbers like that :
values on the schematic are correct.
both ICs are LM324
download the pdf here
http://www.twin-x.com/groupdiy/albums/userpics/ESRMeter.pdf
Thanks to everybody here for all the great projects!
Hope someone finds this useful. Happy new year!
Sleeper
EDIT: Updated layout 8/16/09![Stick out tongue :p :p](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
http://www.groupdiy.com/index.php?topic=30545.0
I built this, it uses and easily sourced 1ma meter, and it works great.
here's a PDF Package which includes schematic, PCB layout and calibration operation info.
I made it for a pretty large trimpot format so you might have to use a sharpie and modify this to fit what you have.
:
both ICs are LM324
download the pdf here
http://www.twin-x.com/groupdiy/albums/userpics/ESRMeter.pdf
Thanks to everybody here for all the great projects!
Hope someone finds this useful. Happy new year!
Sleeper
EDIT: Updated layout 8/16/09
![ESRmeterR2%7E0.gif](https://proxy.imagearchive.com/187/187c63eb5df623456838426e66428382.gif)
![esrsch.gif](https://proxy.imagearchive.com/621/621c42ce79bff8a8a4ad4a60c738f884.gif)