Help with Electrolytic cap testing esr circuit

• Help with Electrolytic cap testing esr circuit
  Posted by cleanworkbench on 14 Dec, 2017 15:56
• 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
• #1 Reply
  Posted by danadak on 14 Dec, 2017 16:42
• 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.
• #2 Reply
  Posted by cleanworkbench on 14 Dec, 2017 17:00
• Looks good, just got to get my head around that lot and see what i can do.
  Many thanks
• #3 Reply
  Posted by Freelander on 14 Dec, 2017 19:16
• Quote from: cleanworkbench on 14 Dec, 2017 15:56

  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
• #4 Reply
  Posted by cleanworkbench on 15 Dec, 2017 08:10
• Looks very interesting as well .Thanks again folks.