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Oliver Sedlacek
10/08/12 04:26
Modified:
  10/08/12 04:27

Read: 802 times
Uk


 
#188606 - Buy or make?
Responding to: Joseph Hebert's previous message
I bought some LCR tweezers by Siborg and they are really useful for checking components. They do C+R and L+R or L+Q which is quite nifty.

Fully characterising a capacitor is pretty time consuming and has usually been done by the manufacturer. They do however assume that various types are intended for various applications, so electrolytics may have a ripple current rating at 120Hz but no ESL, whereas a small ceramic will have an ESL but no ripple current rating. Other interesting characteristics may dielectric absorbtion and failure modes.

If you want to make something, I think Analog Devices do some chips for these bridge type measurements.

List of 8 messages in thread
TopicAuthorDate
measuring reactive component values      Joseph Hebert      10/05/12 16:47      
   measuring reactive component values      Joseph Hebert      10/06/12 10:15      
      What cap are we talking about?      Kai Klaas      10/07/12 07:08      
         This is what I'm wondering about.      Joseph Hebert      10/07/12 12:05      
   C and ESR and inductance      Mahmood Elnasser      10/06/12 13:25      
   I've considered the LCR meter approach ...      Richard Erlacher      10/06/12 14:04      
   Qmeter      Daniel Contarino      10/06/12 18:51      
   Buy or make?      Oliver Sedlacek      10/08/12 04:26      

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