Low Noise Linear regulator power supply

leonm12 · 13th June 2011, 07:12 AM

Hello

I am looking for 5V 0.4A Linear regulator for car enviorment

the regulator should accept 13-14 (varliable -car electric system) and provide clean 5V with very low noise/ripple

the power supply is for USB to S/PDIF converter
for more information please look at the following link, which describe power supply for home similar to what I need in car:

USB Low Noise Power supply, low noise power supply, audiophile power supply, usb dac power supply

Thanks

sofaspud · 13th June 2011, 07:22 AM

Are you planning to build it or buy it?

leonm12 · 13th June 2011, 07:27 AM

I preffer to buy one, becuase I don't have experience of building electronic circuits
but I none exsist for my specific requirments I will build or pay some professional to build for me

sofaspud · 13th June 2011, 08:17 AM

No ripple to worry about, clean depends on installation as much as anything, likewise noise - it shouldn't be a problem unless the vehicle has it's own issues or the driver likes to leave the blinker on.

I Googled "car dc converter -inverter +regulated". I don't know where you are, but the Coby CA709 IC Regulated 800mA Universal DC Car Converter is available from the world's largest retailer.

leonm12 · 13th June 2011, 08:39 AM

this is simple switching power supply and not linear power supply
it probably have ripple and noise

I need something equal to the supply I post in the link above
that fit to car elecrical system

Thanks

sofaspud · 13th June 2011, 09:10 AM

Quote:

this is simple switching power supply and not linear power supply

Well, it actually isn't switch-mode. Switch-mode would be more complex than is remotely necessary. This thing is just dropping volts.

Quote:

I need something equal to the supply I post in the link above

An audiophile DC-DC converter? Sorry, I don't know of any.

AndrewT · 13th June 2011, 09:50 AM

DC-DC converter = voltage regulator.

leonm12 · 13th June 2011, 10:19 AM

anyone can recommend of device meet this specification?

agdr · 13th June 2011, 10:27 AM

I've read about that AQVOX adapter before and haven't seen anything like it for cars.

But... you could use a 12vdc to 120vac auto inverter

Walmart.com: DP Audio Video, Car Power Inverter: Auto Electronics

then plug the AQVOX into that to take it back down to 5vdc.

The AQVOX seems to be well filtered so it should get rid of any noise from the inverter.

Like Andrew says technically all you need is a LM7805 regulator IC with a filter circuit in front of it. But if you are not into building circuits then the above would do the job.

leonm12 · 13th June 2011, 12:44 PM

can you recommend me of such regulator?

13th June 2011, 07:12 AM	#1
leonm12 diyAudio Member Join Date: Sep 2010	Low Noise Linear regulator power supply Hello I am looking for 5V 0.4A Linear regulator for car enviorment the regulator should accept 13-14 (varliable -car electric system) and provide clean 5V with very low noise/ripple the power supply is for USB to S/PDIF converter for more information please look at the following link, which describe power supply for home similar to what I need in car: USB Low Noise Power supply, low noise power supply, audiophile power supply, usb dac power supply Thanks

13th June 2011, 07:22 AM	#2
sofaspud diyAudio Member Join Date: Nov 2005 Location: San Antonio	Are you planning to build it or buy it? __________________ It is error only, and not truth, that shrinks from enquiry. - Thomas Paine

13th June 2011, 08:17 AM	#4
sofaspud diyAudio Member Join Date: Nov 2005 Location: San Antonio	No ripple to worry about, clean depends on installation as much as anything, likewise noise - it shouldn't be a problem unless the vehicle has it's own issues or the driver likes to leave the blinker on. I Googled "car dc converter -inverter +regulated". I don't know where you are, but the Coby CA709 IC Regulated 800mA Universal DC Car Converter is available from the world's largest retailer. __________________ It is error only, and not truth, that shrinks from enquiry. - Thomas Paine

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
preamp supply LOW power LOW noise LOW cost	drdagor	Power Supplies	1	13th September 2010 11:39 PM
High current low noise linear regulator?	Kuro	Power Supplies	2	24th May 2010 05:32 AM
Scavenging ultra low noise power supply	jackinnj	Power Supplies	3	7th September 2008 04:32 PM
Suggestions for a high-power low noise Zener regulator ?	youyoung21147	Power Supplies	0	29th November 2005 11:48 AM
power supply low noise	GIPIONE	Solid State	0	16th April 2005 03:33 PM


	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

13th June 2011, 07:27 AM	#3
leonm12 diyAudio Member Join Date: Sep 2010	I preffer to buy one, becuase I don't have experience of building electronic circuits but I none exsist for my specific requirments I will build or pay some professional to build for me

13th June 2011, 08:39 AM	#5
leonm12 diyAudio Member Join Date: Sep 2010	this is simple switching power supply and not linear power supply it probably have ripple and noise I need something equal to the supply I post in the link above that fit to car elecrical system Thanks

13th June 2011, 09:50 AM	#7
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	DC-DC converter = voltage regulator.

13th June 2011, 10:19 AM	#8
leonm12 diyAudio Member Join Date: Sep 2010	anyone can recommend of device meet this specification?

13th June 2011, 10:27 AM	#9
agdr diyAudio Member Join Date: Sep 2010	I've read about that AQVOX adapter before and haven't seen anything like it for cars. But... you could use a 12vdc to 120vac auto inverter Walmart.com: DP Audio Video, Car Power Inverter: Auto Electronics then plug the AQVOX into that to take it back down to 5vdc. The AQVOX seems to be well filtered so it should get rid of any noise from the inverter. Like Andrew says technically all you need is a LM7805 regulator IC with a filter circuit in front of it. But if you are not into building circuits then the above would do the job.

13th June 2011, 12:44 PM	#10
leonm12 diyAudio Member Join Date: Sep 2010	can you recommend me of such regulator?

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