DIY line driver - Page 2

richie00boy · 15th October 2010, 10:11 PM

Cool, I'm looking to use the chip for exactly the same reason, but for a power amp PSU.

djQUAN · 16th October 2010, 01:01 AM

Quote:

Originally Posted by richie00boy

Cool, I'm looking to use the chip for exactly the same reason, but for a power amp PSU.

I have used the same circuit for several power amp smps's already. just used bigger fets, transformers and rectifiers. the basic controller circuit is the same.

I have a few varieties of open loop smps controllers here. just let me know if you want one.

richie00boy · 16th October 2010, 11:11 AM

Ta. Just having a problem at the moment finding a company to make me suitable transformers, as I'm running off mains so can't really wind them myself.

luka · 16th October 2010, 02:59 PM

too big inmo

djQUAN · 20th October 2010, 02:46 PM

anyone know a cheaper source for ferrite toroids? the 10pcs of cores cost us $30 just for shipping.

luka · 20th October 2010, 03:15 PM

if you ask me, from manufacturer directly... but do let us know if there is other way

Perry Babin · 20th October 2010, 05:39 PM

You'll have to buy from a closer distributor if you want to reduce shipping charges. Buying in larger quantities would reduce the shipping/core price.

djQUAN · 21st October 2010, 03:06 PM

my partner is working at it at the moment. he's looking at asian sources to cut cost. not sure if there are fake ferrites out there?

from what he told me, Amidon increases the shipping charge with bigger orders so there is little to be saved. last resort would be to get a relative of his in the US to buy it so shipping will be lower but would take a while.

Perry Babin · 21st October 2010, 04:59 PM

Have you tried cwsbytemark or any of the distributors listed on the manufacturers (mag-inc.com, etc.) sites?

djQUAN · 23rd October 2010, 03:03 AM

I had a look at their site. didn't see suitable toroids (too big) but there are some pot cores that might work.

I'll ask my partner to check out their shipping prices. thanks

15th October 2010, 10:11 PM	#11
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	Cool, I'm looking to use the chip for exactly the same reason, but for a power amp PSU. __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

16th October 2010, 11:11 AM	#13
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	Ta. Just having a problem at the moment finding a company to make me suitable transformers, as I'm running off mains so can't really wind them myself. __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

16th October 2010, 02:59 PM	#14
luka diyAudio Member Join Date: Sep 2005 Location: in Slovenia :)	too big inmo __________________ home page @ http://www.classdaudio.tk/ @ 24/7 all year long I FEEL SLOVENIA

20th October 2010, 03:15 PM	#16
luka diyAudio Member Join Date: Sep 2005 Location: in Slovenia :)	if you ask me, from manufacturer directly... but do let us know if there is other way __________________ home page @ http://www.classdaudio.tk/ @ 24/7 all year long I FEEL SLOVENIA

20th October 2010, 05:39 PM	#17
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	You'll have to buy from a closer distributor if you want to reduce shipping charges. Buying in larger quantities would reduce the shipping/core price. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links


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20th October 2010, 02:46 PM	#15
djQUAN diyAudio Member Join Date: May 2004 Location: manila	anyone know a cheaper source for ferrite toroids? the 10pcs of cores cost us $30 just for shipping.

21st October 2010, 03:06 PM	#18
djQUAN diyAudio Member Join Date: May 2004 Location: manila	my partner is working at it at the moment. he's looking at asian sources to cut cost. not sure if there are fake ferrites out there? from what he told me, Amidon increases the shipping charge with bigger orders so there is little to be saved. last resort would be to get a relative of his in the US to buy it so shipping will be lower but would take a while.

21st October 2010, 04:59 PM	#19
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Have you tried cwsbytemark or any of the distributors listed on the manufacturers (mag-inc.com, etc.) sites? __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

23rd October 2010, 03:03 AM	#20
djQUAN diyAudio Member Join Date: May 2004 Location: manila	I had a look at their site. didn't see suitable toroids (too big) but there are some pot cores that might work. I'll ask my partner to check out their shipping prices. thanks

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