Help with Electrolytic cap testing esr circuit

[cleanworkbench]

I have some electrolytics i want to test , and some 555 ic,s kicking about.
Anyone have a relativly simple circuit for a ESR tester using 555, want to use also in conjunction with a scope
Thanks

[danadak]

This might help -


http://www.daqarta.com/dw_0o0z.htm

http://www.diyaudio.com/forums/software-tools/173248-awesome-zlcr-meter.html

http://www.sillanumsoft.org/ZRLC.htm

http://www.radio.imradioha.org/pc_based_test_gear.htm

https://makezine.com/projects/sound-card-oscilloscope/

http://www.wb5rvz.com/rlc_meter/


Regards, Dana.

[cleanworkbench]

Looks good, just got to get my head around that lot and see what i can do.
Many thanks

[Freelander]

I have some electrolytics i want to test , and some 555 ic,s kicking about.
Anyone have a relativly simple circuit for a ESR tester using 555, want to use also in conjunction with a scope
Thanks

Hi, I note you ask more for ESR so here is a rather neat design that should suffice. You dont need a scope. Cant get much simpler and surprisingly accurate.
https://www.eevblog.com/forum/projects/5-transistor-esr-meter-design/

Also, a nice little explanatory video that is useful.


Enjoy

[cleanworkbench]

Looks very interesting as well .Thanks again folks.