question about Aleph-3 , need help - Page 2

space2000 · 25th June 2008, 05:39 AM

hi thanks for help.

here is the circuit. i followed same as it is. power supply is 29vdc.

space2000 · 26th June 2008, 03:10 AM

hi,

can i add more then three pair of output mosfets? as it is only 30w using three pair of mosfets. if i want to get 100w then i will require 7 more pair. also the power supply must be 0.5 X 20 =10 ampaire.

thank you.

hifimaker · 26th June 2008, 09:00 PM

As you increase voltage and current, the power output will increase. It is necessary to add additional Mosfets to dissipate the increased power levels across more Mosfets as to not overload those output devices.

On your other question... When measuring the output voltage apply a sine wave of a known voltage and measure it's amplitude at the output. You will need a signal generator and a scope. A simple singal generator can be made pretty easily.

Perhaps other forum members here have a better idea, but that's how I've done it.

-David

26th June 2008, 03:10 AM	#12
space2000 diyAudio Member Join Date: Mar 2008	can i add more mosfests on aleph-3 to get 100w? hi, can i add more then three pair of output mosfets? as it is only 30w using three pair of mosfets. if i want to get 100w then i will require 7 more pair. also the power supply must be 0.5 X 20 =10 ampaire. thank you.

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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Aleph 3 pcb question.	timcatn	Pass Labs	0	19th April 2007 07:34 AM
Aleph P 1.7 / Aleph 1.2 Balanced IC Question	SRMcGee	Pass Labs	2	25th March 2007 04:16 PM
Aleph P1.7 question	AndrejM	Pass Labs	16	2nd March 2005 08:15 PM
Aleph 0s question	moe29	Pass Labs	3	14th December 2002 04:06 AM
Aleph 5 ps question	protos	Pass Labs	8	17th July 2002 11:21 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


	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

26th June 2008, 09:00 PM	#13
hifimaker diyAudio Member Join Date: Oct 2003 Location: San Jose	As you increase voltage and current, the power output will increase. It is necessary to add additional Mosfets to dissipate the increased power levels across more Mosfets as to not overload those output devices. On your other question... When measuring the output voltage apply a sine wave of a known voltage and measure it's amplitude at the output. You will need a signal generator and a scope. A simple singal generator can be made pretty easily. Perhaps other forum members here have a better idea, but that's how I've done it. -David