 SOT: Electronics question for welder repair, Capacitor close enough? |
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| bbrock |
 Nov 28 2017, 10:17 AM
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914 Guru  Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains 
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While replacing the diodes on my Hobart Handler MIG last week, one of the leads popped off of one of the little capacitors attached to diodes for protection. Googling, I found advice saying the exact value of those capacitors is not important and to just get "something close." But no indication of what close enough would be. The factory part is 0.01uF, 100v. Digging through my spare components, I found, and installed a 0.3uF, 100v capacitor (I do have 0.01 uF but only 25v). After the repair, the welder is working like new.
But I'm wondering if that substitute capacitor is sufficiently protecting the diode. Getting the correct capacitor is easy enough, but digging into the welder to replace it is not. I'd like to call the repair done, but don't want to burn up my new diode. Thoughts? |
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Posts in this topic
bbrock SOT: Electronics question for welder repair Nov 28 2017, 10:17 AM
Spoke Not sure a 0.3 is close to a 0.01 since it is 30x ... Nov 28 2017, 11:17 AM
bbrock
Not sure a 0.3 is close to a 0.01 since it is 30x... Nov 28 2017, 11:29 AM Spoke Capacitors are often used in circuits as "snu... Nov 28 2017, 12:15 PM bbrock
Capacitors are often used in circuits as "sn... Nov 28 2017, 12:28 PM  |
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