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Old 7th November 2010, 04:05 PM   #161
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Default I am needing 2N5401 and 2N5551....other very interesting ones are

2SC4793 and 2SA1837....these are excelent....they are made of a non conductive material, so, prototype constructors does not even have to bother about insulators.

The plastic tool Rudi has to bend resistances matching circuit board's holes distance, is very usefull too.

Thank you dear Joseph.

regards,

Carlos
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File Type: jpg The tool.jpg (85.3 KB, 586 views)
Attached Files
File Type: pdf 2SC4793.pdf (111.3 KB, 72 views)
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Last edited by destroyer X; 7th November 2010 at 04:11 PM.
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Old 8th November 2010, 12:10 AM   #162
Mitchel is offline Mitchel  Brazil
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Quote:
Originally Posted by niss_man View Post
Is this a thermal circuit breaker/switch as these are? If so what would the opening temperature be?

Jaycar Electronics - Search results thermostat circuit breaker/switch

Regards

Niss_man
Hello Niss_man,

I recommend a thermal switch rated at 70ºC, with normally open contacts. Get Jaycar CAT. NO. ST3833.

Don't worry about the effect of this switch on audio, since it's not in series with audio (it just activates the protection board relay, which should be of a high quality type).

Last edited by Mitchel; 8th November 2010 at 12:12 AM.
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Old 8th November 2010, 08:16 AM   #163
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Thanks Mitchel. Where does this thermal sw attach? The heat sink? Or does it just use the current in the wire to get hot ie. too much current=too much heat. If this were the case then it would be dependent on the size of wire used. If it is connected to the heat sink it would depend on the thermal conductivity of the heat sink?

Regards

Niss_man

Last edited by niss_man; 8th November 2010 at 08:19 AM.
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Old 8th November 2010, 09:35 AM   #164
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Thermal switch should be mounted on the heatsink

BTW:
Mitchel
Do you have any plan to do pcb for dx blame with sanken transistors?


Quote:
Originally Posted by niss_man View Post
Thanks Mitchel. Where does this thermal sw attach? The heat sink? Or does it just use the current in the wire to get hot ie. too much current=too much heat. If this were the case then it would be dependent on the size of wire used. If it is connected to the heat sink it would depend on the thermal conductivity of the heat sink?

Regards

Niss_man
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Old 8th November 2010, 10:32 AM   #165
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Default Well Niss_man, i'm uploading a video about bimetal

For while, take a look here...in special the last one:

YouTube - Where the Hell are Matt's Outtakes
YouTube - Where the Hell WAS Matt?
YouTube - Matt Confesses: Where the Hell is Matt? Video an 'Elaborate Hoax'

regards,

Carlos

.................................................. ....

Here you have it Simon:

http://www.youtube.com/watch?v=Hryt2oyL5fE
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These words sounds alike English..but they are not.. these are words without meaning, just sounds made by humans; https://www.youtube.com/watch?v=_X_7iMHugXM

Last edited by destroyer X; 8th November 2010 at 10:39 AM.
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Old 8th November 2010, 12:15 PM   #166
Mitchel is offline Mitchel  Brazil
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Quote:
Originally Posted by niss_man
Thanks Mitchel. Where does this thermal sw attach? The heat sink?
Like Dexter said, you should mount the switch on the heatsink. Screw it down, and don't forget to use a little bit of thermal compound in between the switch and the heatsink.

Quote:
Originally Posted by dexter
Do you have any plan to do pcb for dx blame with sanken transistors?
Now that you said it, I realized the MJL are smaller in width than the Sankens. I don't think that there's a good reason to use the Sankens: the MJL4281/4302 is a wonderfull pair, and as far as I'm concerned, you can get original pieces quite easily.

The Sankens are wider, and would make the PCB much larger ...
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Old 8th November 2010, 02:22 PM   #167
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Default There is some escape, Niss_man...

Quote:
Originally Posted by Mitchel View Post
Now that you said it, I realized the MJL are smaller in width than the Sankens....
The Sankens are wider, and would make the PCB much larger ...
If you manage to get heatsinks like these, you can mount each Sanken on a different floor (first transistor on the first floor, second on the second one, and so on).
Cheers,
Max.
Attached Images
File Type: jpg HEATSINK1.JPG (90.1 KB, 499 views)
File Type: jpg HEATSINK2.JPG (88.7 KB, 478 views)
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Regards,
Andres
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Old 8th November 2010, 02:37 PM   #168
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Default Me too!

Quote:
Originally Posted by Sound_Buster View Post
Yeah! I visited three of the places shown in this video.
Me too! Miami, São Paulo and Rio.
Unfortunately, only one of them abroad!
If Matt had gone to Dallas, it would have been four...
This (http://www.youtube.com/watch?v=zlfKdbWwruY) is one of the reasons for I love this world we live in!
Cheers,
Max.
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Regards,
Andres

Last edited by smartx21; 8th November 2010 at 02:41 PM.
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Old 9th November 2010, 09:25 PM   #169
farjon is offline farjon  Brazil
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Max,

Not only the cities, but I passed in the specific locations where these scenes were taken: New York (Central Park), San Francisco (Alamo Square / Painted Sisters) and Rio de Janeiro (Ipanema beach).



Regards.
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Old 10th November 2010, 12:13 PM   #170
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Default Reduced prices into our group buy...join us!

Follow this link:

DX BLame ES, ST, MKII, MKII Supercharged Groub Buy Interest

We have achieved the minimum quantity to order but we have, also, changed our board's provider to obtain price reduction....enjoy!

regards,

Carlos
__________________
These words sounds alike English..but they are not.. these are words without meaning, just sounds made by humans; https://www.youtube.com/watch?v=_X_7iMHugXM

Last edited by destroyer X; 10th November 2010 at 12:15 PM.
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