Aleph 2

jeclk · 31st December 2002, 02:37 PM

Hello forum

I am spirit to build the ALEPH 2.
I shall like to know if it is necessary to isolate the standard(cannon) of the IRF 9610 to go(take) up them on heatsinks, not to put them in the ground

Happy new year for all

dshortt9 · 31st December 2002, 02:51 PM

I'm not quite sure what you mean. The fet's do not need to go on the main heatsink but should be seperate from it.

jeclk · 31st December 2002, 02:57 PM

In fact ,
I put small radiators on the 9610 but I do not have to isolate the standard(cannon).
I wanted to know if it is necessary to isolate.

@+

dshortt9 · 31st December 2002, 03:32 PM

I think I understand now. It is good to put small heatsinks on the small fet's and you do not have to isolate them from the heatsinks, as long as they do not touch anything else.

Happy Building!

jeclk · 31st December 2002, 04:09 PM

then I do not know or is my problem.
I test the exit HP is I have a D.C. current.
I don't find the breakdown .

dshortt9 · 31st December 2002, 04:13 PM

Give us some voltages. Source resistors. Where is the current you are measuring? Across the output? are you using a resistor across the output? More information please. I'm finishing up my Aleph 2's also today.

Dennis Hui · 31st December 2002, 04:17 PM

I wonder how much difference it will make to mount the
IRF9610's forming the differential pair (Q1 and Q2)
back-to-back on a single heatsink for better thermal
tracking. In this case, the devices will need to be
electrically isolated.

Dennis

dshortt9 · 31st December 2002, 04:20 PM

Here is another thread to read
My Aleph 5 isn't working

jeclk · 31st December 2002, 04:33 PM

I have use the same diagram that "Wayne" with the same value of the components. at exit I then have a D.C. current which goes up, I quickly cut off the supply.

dshortt9 · 31st December 2002, 04:43 PM

It sounds like a thermal problem. How big are your main heatsinks and did you match your mosfets well? How are they mounted to the heatsinks?

31st December 2002, 02:37 PM	#1
jeclk diyAudio Member Join Date: Oct 2002 Location: France	Aleph 2 Hello forum I am spirit to build the ALEPH 2. I shall like to know if it is necessary to isolate the standard(cannon) of the IRF 9610 to go(take) up them on heatsinks, not to put them in the ground Happy new year for all __________________ stay zen

31st December 2002, 02:57 PM	#3
jeclk diyAudio Member Join Date: Oct 2002 Location: France	In fact , I put small radiators on the 9610 but I do not have to isolate the standard(cannon). I wanted to know if it is necessary to isolate. @+ __________________ stay zen

31st December 2002, 04:09 PM	#5
jeclk diyAudio Member Join Date: Oct 2002 Location: France	then I do not know or is my problem. I test the exit HP is I have a D.C. current. I don't find the breakdown . __________________ stay zen

31st December 2002, 04:33 PM	#9
jeclk diyAudio Member Join Date: Oct 2002 Location: France	I have use the same diagram that "Wayne" with the same value of the components. at exit I then have a D.C. current which goes up, I quickly cut off the supply. __________________ stay zen

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

31st December 2002, 02:51 PM	#2
dshortt9 diyAudio Member Join Date: Apr 2001 Location: Milwaukee, Wisconsin	I'm not quite sure what you mean. The fet's do not need to go on the main heatsink but should be seperate from it.

31st December 2002, 03:32 PM	#4
dshortt9 diyAudio Member Join Date: Apr 2001 Location: Milwaukee, Wisconsin	I think I understand now. It is good to put small heatsinks on the small fet's and you do not have to isolate them from the heatsinks, as long as they do not touch anything else. Happy Building!

31st December 2002, 04:13 PM	#6
dshortt9 diyAudio Member Join Date: Apr 2001 Location: Milwaukee, Wisconsin	Give us some voltages. Source resistors. Where is the current you are measuring? Across the output? are you using a resistor across the output? More information please. I'm finishing up my Aleph 2's also today.

31st December 2002, 04:17 PM	#7
Dennis Hui diyAudio Member Join Date: Aug 2002 Location: Toronto, Canada	I wonder how much difference it will make to mount the IRF9610's forming the differential pair (Q1 and Q2) back-to-back on a single heatsink for better thermal tracking. In this case, the devices will need to be electrically isolated. Dennis

31st December 2002, 04:20 PM	#8
dshortt9 diyAudio Member Join Date: Apr 2001 Location: Milwaukee, Wisconsin	Here is another thread to read My Aleph 5 isn't working

31st December 2002, 04:43 PM	#10
dshortt9 diyAudio Member Join Date: Apr 2001 Location: Milwaukee, Wisconsin	It sounds like a thermal problem. How big are your main heatsinks and did you match your mosfets well? How are they mounted to the heatsinks?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
First version Aleph 0 (Null, ZERO, O, Os, 0s) versus later Aleph versions	tiefbassuebertr	Pass Labs	13	27th April 2012 02:13 AM
Aleph (Single Ended) + Larvadin (no Memory Distortion) = Ultimate Aleph?	tiefbassuebertr	Pass Labs	17	9th January 2012 02:10 PM
Mini Aleph Board & Aleph 2 Parts List	gpsmithii	Pass Labs	3	16th January 2010 03:58 AM
First version Aleph 0 (Null, ZERO, O, Os, 0s) versus later Aleph versions	tiefbassuebertr	Pass Labs	0	6th August 2009 11:11 AM
PCBs for Aleph 2, Aleph 3, Aleph 4 and Aleph 5 amplifiers	kristijan-k	Swap Meet	64	12th September 2002 07:55 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read