Heatsinks for Bosoz?

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#221
Hi,
i've been doing some updating on the wiki and seems that my excel is not really uptodate. If you have paid and the wiki still says you haven't, please email me with the following in the subject field: diyaudio.com nick, paypal name , paid. All of you that haven't received a invoice, i will be sending that out tomorrow morning.

atm, 90boz + 90 pwr brds are paid for so please transfer the funds asap so i can order the boards on Monday. We need to reach at least 150 + 150 paid boards, otherwise this is going to be a nightmare to recalculate pricing etc etc.

Thx,

Kari
 
#223
Kari said:


The 1000uF/100V has a footprint of 18mm/7.62mm
The 22uF 5mm/2,5mm

The poluprop cap footprints are taken from Mundorf MCap 4,7uF, 10uF and 30uF.

/Kari
Click to expand...

The hieght is not really a restriction though, so I can use anything inside the same diameter, correct?

C2 & C3 18mm
C22 5mm and what's the reccomended VDC?


What is the diameter allowed for C9 to C12 and C15 to C18 on the PSU?

Regards

Anthony
 
#224
Coulomb said:


The hieght is not really a restriction though, so I can use anything inside the same diameter, correct?

C2 & C3 18mm
C22 5mm


What is the diameter allowed for C9 to C12 and C15 to C18 on the PSU?

Regards

Anthony
Click to expand...

C9 to C12 max dia 35mm and C15 to C18 max dia 14mm


Finally some time to take a glass of wine while my wife and daughter are a sleep. Seems that 24h/day is not near enough, should be something like 34h:smash:

/Kari
 
#226
Regardless of what happens with a parts GB it appears that the most expensive part of the kit is going to be C9-C12. I have checked around to quite a few suppliers (I am talking new stock here) and it appears that in small quantities these caps are going to be at least $6 or more, in fact several brands were over $9 each! Has anyone else found an inexpensive source for these caps? One thing I did note was a price jump at 4,000uF, I have noted that a really good 3,900uF cap is easier to find and a few bucks cheaper.

Regards

Anthony
 
#227
Anthony,

I don't see why 3900uF caps can't be used, especially
if they're easily sourced.

The power supply (even with just 3900uF caps) looks
to be somewhat quieter than the original Bosoz
power supply (larger caps in CRC arrangement
vs just C before regulation). Of course, I'm not sure
if the XBosoz has a significantly greater demand on
its PS than the stock Bosoz.

Cheers,
Dennis
 
#228
Dennis Hui said:
Anthony,

I don't see why 3900uF caps can't be used, especially
if they're easily sourced.

The power supply (even with just 3900uF caps) looks
to be somewhat quieter than the original Bosoz
power supply (larger caps in CRC arrangement
vs just C before regulation). Of course, I'm not sure
if the XBosoz has a significantly greater demand on
its PS than the stock Bosoz.

Cheers,
Dennis
Click to expand...

Thanks for the feedback Dennis, this is what I thought. I hope Kari gets the Wiki up today as he said he would. If I can get a quick response from the members I can save us a bundle on a special broker deal on some smashing 105 Deg. 3900uf 100vdc caps. I am talking $3.50 US ea as opposed to $6 to $8 at least in Disty channel. I can only get 40 but that's enough for 10 power supplies, and to be fair I would cost average the savings in kits.

Regards

Anthony
 
#230
#232
Coulomb said:
Regardless of what happens with a parts GB it appears that the most expensive part of the kit is going to be C9-C12. I have checked around to quite a few suppliers (I am talking new stock here) and it appears that in small quantities these caps are going to be at least $6 or more, in fact several brands were over $9 each! Has anyone else found an inexpensive source for these caps? One thing I did note was a price jump at 4,000uF, I have noted that a really good 3,900uF cap is easier to find and a few bucks cheaper.

Regards

Anthony
Click to expand...

That is why i chose to use a snap-in type of cap. Basically anything can be used here.

/Kari
 
#236
Anthony,

Sure, I will confirm that on Monday.

On issue of parts kit GB, Can I get the parts w/OUT heat sinks?
I have over hunderd pieces in my garage.

Also, I have need for some extra IRF9610 / 610 for a different project, think I can paid for some extra?
 
#237
gengis said:
Anthony,

Sure, I will confirm that on Monday.

On issue of parts kit GB, Can I get the parts w/OUT heat sinks?
I have over hunderd pieces in my garage.

Also, I have need for some extra IRF9610 / 610 for a different project, think I can paid for some extra?
Click to expand...

Humm if you have hundreds of extras how much would you sell them for? 🙂

When we know how many kits are required I willl be able to tell you how much a kit is without Heatsinks, but I do not see a problem.

Anthony
 
#238
Guys, you are awsome.
Not just boards but parts as well in GB.
I have a question. As I mentioned earlier I will try to replace outputs on DCX2496 with X - Bosoz. So 6 boards will go in. I would like to use only two power supply boards. Could anyone let me know what is the power requirenment or what I would need to change on original boards to make it happen.
I think that I read somewhere on the tread that gain is 12 dB. Is that correct? If someone is to change gain what resistor would affect that?
Thanks
AR2
 
#239
AR2 said:
Guys, you are awsome.
Not just boards but parts as well in GB.
I have a question. As I mentioned earlier I will try to replace outputs on DCX2496 with X - Bosoz. So 6 boards will go in. I would like to use only two power supply boards. Could anyone let me know what is the power requirenment or what I would need to change on original boards to make it happen.
I think that I read somewhere on the tread that gain is 12 dB. Is that correct? If someone is to change gain what resistor would affect that?
Thanks
AR2
Click to expand...

I mentioned that in the original BOSOZ design that a combination of P5 and R15 changed the gain. If you changed R15 to 430R and shorted P5, that will yield 12dB gain. I have not looked closely enough at kari's layout yet to see how to set the gain of the preamp.

Regards

Anthony
 
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