BPA300 Round 2 - Page 13

rhysh · 12th February 2009, 08:25 PM

Quote:

Originally posted by samsagaz
wich is the BOM of the DRV134?

1 x DRV134
2 x 0.1uf capacitors
3 x molex kk .156
1 x 3 way terminal block

juluska · 12th February 2009, 10:15 PM

With only one toroidal transformer 1000VA 4x25V.
What are the exact measures of amplifiers pcbs?

rhysh · 12th February 2009, 10:17 PM

4.8"X3.2" INCH

Using one transformer would be fine.

huy5005 · 12th February 2009, 10:30 PM

I think you should have current limiter or soft start circuit for 1000VA transformer ? 'cause of the in rush current.

juluska · 12th February 2009, 10:38 PM

Quote:

Originally posted by huy5005
I think you should have current limiter or soft start circuit for 1000VA transformer ? 'cause of the in rush current.

Do you Know a simple soft start circuit i can install easily?

huy5005 · 12th February 2009, 10:44 PM

Check out the aleph power supply at this link

http://www.penguinlovers.net/audio/aleph2_pswire.jpg

rhysh · 12th February 2009, 10:46 PM

http://sound.westhost.com/project39.htm

rhysh · 12th February 2009, 10:52 PM

Quote:

Originally posted by huy5005
Check out the aleph power supply at this link

http://www.penguinlovers.net/audio/aleph2_pswire.jpg

Before anyone asks, we dont use inductors/chokes for this build.

juluska · 12th February 2009, 11:56 PM

What about this ebay soft start circuit, is rated at 10A. The resistor is 47ohms, 20W. Will this be enough?

ebay item: 150322713013

Thanks

juluska · 12th February 2009, 11:57 PM

more photos

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12th February 2009, 10:17 PM	#123
rhysh diyAudio Member Join Date: Sep 2008	4.8"X3.2" INCH Using one transformer would be fine.

12th February 2009, 10:30 PM	#124
huy5005 diyAudio Member Join Date: Dec 2007	I think you should have current limiter or soft start circuit for 1000VA transformer ? 'cause of the in rush current.

12th February 2009, 10:44 PM	#126
huy5005 diyAudio Member Join Date: Dec 2007	Check out the aleph power supply at this link http://www.penguinlovers.net/audio/aleph2_pswire.jpg

12th February 2009, 10:46 PM	#127
rhysh diyAudio Member Join Date: Sep 2008	http://sound.westhost.com/project39.htm

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