[hagtech]

I hadn't thought of it, but someone asked if a FryKleaner could be used to break-in his Black Gate capacitors.  I thought about it and figured it could.  The signal level might be a little low, so it could take awhile.

Here's the circuit.  Connect the output of the FryKleaner through a big cap to the CUT (capacitor under test).  At the same time, apply a dc bias to the CUT via a 1k or 10k resistor.  Best to burn at operating voltages.  Use 75% of capacitor rating if you don't know the voltage to be used in the ultimate application.



I asked him to report back with experimental results.

jh

[mgalusha]

Very cool. It will be interesting to learn the results. Should the 100uF cap be a high voltage type? I would expect so since it will see the B+ but it's always best to ask.

[hagtech]

Oh yes, the coupling 100uF cap must be rated to handle the B+ voltage.  Interestingly, if both capacitors are 100uF or larger, than this circuit burns in both at once.  

jh

[Rob Thomas]

I'm building a new pair of Xovers for my Altec VOTTs.

Parts per side are two 14 Ga Alphacore Copper Foil Inductors and 200V 6 and 10uf REL caps and a 28uf Solen cap.

Should I build the crossovers and then burn them in, or burn in the components in groups?

What's a good scenario?  I could run all four inductors at once as if each was a speaker wire.  

But what of the caps?  Connect 'em like individual wires as well and burn four at a time?  Or get 'em all on the FryK at once by hooking some in series or parallel?

Just curious what theoretically makes the most sense...

[hagtech]

Me, I'm lazy enough not to worry about each individual part.  I'd build the xover, put it in the darn speaker, and burn the whole thing together, driver and all.

In fact, I have some Fostex drivers in cabinets Frying right now in the shop.  Gotta do it at night, 'cause it's pretty frigin irritating to listen to.

jh

[Rob Thomas]

I'm lazy enough that it'll take me a while to get the crossovers together, in the meantime, the inductors are on the Frykleaner.  

Is the FryKleaner output on it's own enough to do anything to crossover caps, or am I dreaming?

(I did resolve my Audiocircle Catch-22 you can see.)

-Rob

[tsteahr]

Hello,

One week ago I compleated my first DIY project, the FryKleaner Pro.  Super kit, works great and no smoke when I plugged it in for the first time (I was quite proud of that aa

I would like to use my FryKleaner to break in some new Mundorf caps before installing them into my tube amp and preamp.  The caps are rated for 800VDC, 425VAC.  Reading Jim's OP makes me think I need to apply approximately 600VDC bias.  Is this correct?  This seems like a lot of volts (for a newbe).  Can someone suggest how I can obtain a power supply suitable for performing this function?  The caps I would like to break in range from 0.22mfd to 2.2mfd, if that matters.

Thanks for any suggestions,

Tom

BTW, the Q and A posts about building the Frykleaner on this board were Essential to me success with this project.  Thanks!

[hagtech]

You might want to bias it to the same voltage it will be at in your amp.  And the amp itself will provide a B+ supply you can tap off of.  For the Mundorf, you can probably do just as well without any dc bias at all.  Just connect between the speaker binding posts (top to bottom) on the FRYPRO.

Or you can string together twenty 9V batteries...

jh

[tsteahr]

For the Mundorf, you can probably do just as well without any dc bias at all.  Just connect between the speaker binding posts (top to bottom) on the FRYPRO.

Thanks Jim,  I'll try one without DC bias first and see how this works.  Any suggestions on how long I should leave it on the FryKleaner?  I'm thinking a week...

Or you can string together twenty 9V batteries...

Doh!  This is so obvious I'm embarrassed  Oh well, that's why I'm a ME, not a EE.