CCS mod for 006t (t1 Variant )

[JimL]

Note that KG's boards are designed to use the ceramic insulators - you can see the thickness of the insulator outlined on the board where there are on-board heat sinks. Considering the minimal cost and the fact that they have been used on many successful builds without issues, I don't see the point in playing around with mica or silicon insulators, other than contrariiess.

Edited September 4, 2018 by JimL

[jose]

4 hours ago, JoaMat said:

Thank you. I’m particular interested with the insulating shoulder 7721-3PPSG as I believe this part is essential for the combo.

Yes it´s very interest. I use too ceramic insulator +7721-10PPG + steel screws, like others members and I never had have problems with this combination. 

Edit... And I'm very careful not to stain anything with thermal paste. 

Edited September 4, 2018 by jose

[JoaMat]

1 hour ago, JimL said:

Note that KG's boards are designed to...

......won’t stop us from doing all kind of crazy things.

52 minutes ago, jose said:

 

Edit... And I'm very careful not to stain anything with thermal paste. 

I've a secret - don't tell...  I never use thermal paste

[jose]

32 minutes ago, JoaMat said:

I've a secret - don't tell...  I never use thermal paste

I'm not a big fan of using thermal paste either, but I've seen some photos where the transistors are quite stained.

[justin]

3 hours ago, JimL said:

Note that KG's boards are designed to use the ceramic insulators - you can see the thickness of the insulator outlined on the board where there are on-board heat sinks. Considering the minimal cost and the fact that they have been used on many successful builds without issues, I don't see the point in playing around with mica or silicon insulators, other than contrariiess.

I like SPA2000-0.015-00-54 if using PEEK screws

[JoaMat]

and this Bergquist pad is supposed to be used without thermal grease.? Looks like a nice alternative.

Edited September 4, 2018 by JoaMat

[vvega]

3 hours ago, JimL said:

Note that KG's boards are designed to use the ceramic insulators - you can see the thickness of the insulator outlined on the board where there are on-board heat sinks. Considering the minimal cost and the fact that they have been used on many successful builds without issues, I don't see the point in playing around with mica or silicon insulators, other than contrariiess.

I don’t agree , when someone tells me on the internet that the specs are wrong on a part ... then why shouldn’t you test those specs . 

And if you have something against testing when hv is concerned well , that’s just silly.

as an engineer I spend a lot of time testing to failure because that’s how we keep opinions in check over facts . 

Fact is mica is thinner and at the same thickness has very similar thermal barrier property’s . So a thinner insulator less thermal resistance . 

Whats wrong with looking for efficiency or better design 

 

3 hours ago, jose said:

Yes it´s very interest. I use too ceramic insulator +7721-10PPG + steel screws, like others members and I never had have problems with this combination. 

Edit... And I'm very careful not to stain anything with thermal paste. 

From the testing I’ve done so far you shouldn’t have any issues with this combo .  It would seam you can use mica with synthetic fastenings or ceramic with steel . I don’t use grease in testing because .. it eventually dries out and it’s dialetric property’s change so the test wouldn’t give a result that would account for that .

im actually looking forward to trying different compounds to see how much if any extra insulative effect they give .

this is just a blog of my personal little project , if it’s upsetting people they should probably just unsubscribe .

[jose]

15 minutes ago, vvega said:

this is just a blog of my personal little project , if it’s upsetting people they should probably just unsubscribe . 

I don't think that you are upsetting to anyone.

[vvega]

7 minutes ago, jose said:

I don't think that you are upsetting to anyone.

JimL saying the purpose is  contrariness actually a pretty offensive thing to say to an engineer . 

Its just an adventure in building some electronics , I didn’t decide to build the circuit just to be a dick about it , 

i started doing it because I wanted better sound , 

i started testing because I made a mistake , a potentially harmful one and I’d like to not make that mistake again . 

Im still quite grateful to the fellow because it was his article that set me on this path and Kevin’s support that got me through it .

ps I’ve started acquiring parts to build a carbon ... so this should be interesting  

[JimL]

Sorry, didn't mean to be insulting. Carry on.

Edited September 4, 2018 by JimL

[vvega]

13 minutes ago, JimL said:

Sorry, didn't mean to be insulting. Carry on.

All good , if it wasn’t for the article you wrote I would still be sitting here annoyed at an amp that was sub par at best . I appreciate that you put it out there and it’s work like that that keeps diy alive and out there . 

Its appreciated I guess all I’m trying to do with the testing is show the reasons behind why you did spec the ceramic insulators in the first place .

But for me missing that detail and using silicon , something that would have failed at even 500v , I wouldn’t have damaged my amp and had to repair it. 

The testing so far has shown that a steel bolt with ceramic is good enough in fact it’s as good as a synthetic bolt and mica if not better.