Re: A Tale of Two Condensers

[legendre]

quote debe:

I think you just proved that the Heath IT-28 tester is the best tester that you used as it tests under voltage. The faulty capacitor eventualy showed its self, probably due to internal heating at that voltage.

Perhaps so, but there are a couple of ‘buts’.

– You’ll notice that the component tester did find +significant+ differences between the parts, in the Vloss and ESR figures

– The IT-28 has, at least once, failed to find a truly, horribly faulty condenser – which showed no leakage, and was measured as close to its marked value as possible, using that feature of the IT-28.. (I didn’t have the component tester at that time).

I sure wish that I had the aforementioned condenser, so I could run it through the same tests – but that was years ago. It was from a Motobecane 50V moped, and unlike most, they are rated at 2.0uF (not 0.22uF).. and that’s the only time I’ve ever seen such a part used on any older ignition.. 2uF!