|
#1
|
||||
|
||||
Quote:
https://www.amazon.com/SainSmart-Poc...ords=esr+meter Or a nicer looking box wih some handy short clip leads: https://www.amazon.com/Huhushop-Tran...ords=esr+meter Either one of these, properly used, should substantially improve your chances of finding bad caps on these sets... bulged and oozing appearance does *not* tell the whole story. just my 2 cents, jr |
#2
|
||||
|
||||
Quote:
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#3
|
|||
|
|||
I'll admit that I probably should invest in one of those ESR Meters, but then again like I said if its only 15-20 dollars you're probably going to be paying for something that's of poor quality build wise because that's usually the way it is in the electronics world, the cheaper the price is, the lesser the build quality and thus the more likely it is that it will be dead in about a year or 2.
Well I broke down and ordered an ESR Meter, and its was one that was in a case already. it was $35 but I figured it would be worth it, because it also had Mosfet, Transistor and resistor tests on it as well besides ESR Tests for Capacitors and it can test capacitors in circuit. And Jr. Tech, the ESR Meter I ended up getting was the one that was in the second link you posted in your post on here. Last edited by Captainclock; 06-17-2016 at 05:38 PM. |
#4
|
||||
|
||||
I suspect that you will be pleased when you discover all that the tester can do. If you have not seen it yet, here is a link to a YouTube video of a short demonstration:
https://m.youtube.com/watch?v=b3dPBnYixs4 Contrary to his opinion, I find the ZIF (zero insertion force) socket to be very useful... about a month ago I went through a bunch of random semiconductor devices that were just thrown into a coffee can over the years and sorted out npn, pnp, fets, scrs, thyristors, diodes... very useful device! Here is a pdf by the original desiger... likely more than most need to know, but an interesting read nonetheless: http://www.mikrocontroller.net/attac...er_eng104k.pdf jr Last edited by jr_tech; 06-18-2016 at 01:01 PM. Reason: add second link |
#5
|
|||
|
|||
Quote:
OK so when measuring a capacitor's ESR rating what kind of measurement should I be getting if the capacitor is good, and what kind of reading should I get if the capacitor is bad? I'm wondering because I'm going to see If I can take another crack at that Westinghouse TV. |
Audiokarma |
#6
|
||||
|
||||
Depends on the size, voltage rating of the capacitor and quality of the capacitor, but lower esr is better. I printed out this scale as a guideline, and find it useful.
http://www.electro-tech-online.com/a...003-jpg.84737/ It is also useful to compare readings to those taken on a new good quality capacitor of the same size and voltage rating. On large capacitors, say under one tenth of an ohm or lower, you may need to zero out or just subtract the test lead resistance to get a better reading. jr |
#7
|
|||
|
|||
Quote:
|
|
|