converting 12v to 5.5v and 3.3v
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=104807
Printed Date: May 15, 2024 at 9:30 AM
Topic: converting 12v to 5.5v and 3.3v
Posted By: offroadzj
Subject: converting 12v to 5.5v and 3.3v
Date Posted: May 17, 2008 at 9:52 PM
I just found a message on avic411 on how to add a DTV converter box to my Z2 to get HDTV in my truck. I do however need to figure out how I can convert a 12v signal to a 5.5v and then also a 3.3v. I knwo that there is a way to wire it up, but I dont know what that way is.. lol.
If anyone has any info I would greatly appreciate it.
Thanks
kenny
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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205
Replies:
Posted By: i am an idiot
Date Posted: May 18, 2008 at 4:09 AM
I do not know how much current capacity you need, but if 5.0 volts at 1.5 amps and 3.3 volts at 5 amps will work for you, you could try this carputer power supply. https://www.mini-box.com/picoPSU-90;jsessionid=0a01025a1f43b48c1d954d9d49bf94b2896bf02143a8.e3eSbNySbxiNe34Pa38Ta38Mc3b0 This is a low wattage supply, more current will be available out of a larger supply, however the output will still be 5.0 volts, even on a larger supply.
Posted By: daboss593
Date Posted: May 18, 2008 at 8:22 AM
i asked a sim ? mine was using a computer monitor in my car. got a response they have in line converters but got no more info.
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OWWWWWWWWWWW you said you discharged the cap!
Posted By: i am an idiot
Date Posted: May 18, 2008 at 10:57 AM
you asked about putting a computer monitor in your vehicle. There are some computer monitors that have an external power supply (like that of a laptop power supply) that simply puts out 12 volts to power said monitor. You could get one of those monitors and it will run fine in your car. Haemphyst answered with basically what I just typed it was the first response after you asked the question
Posted By: haemphyst
Date Posted: May 18, 2008 at 3:04 PM
daboss593 wrote:
i asked a sim ? mine was using a computer monitor in my car. got a response they have in line converters but got no more info.
Well, now... I'm a bit hurt. (Not really, but still...) WOW. I even went back and read the thread, and I can't see ANYWHERE that you question wasn't perfectly answered...
haemphyst wrote:
You'd be really surprised to find out how many monitors actually use 12 volt power bricks... Easy enough to find one. 14.4v is close enough that it will run perfectly well.
Find one with the power needs you already HAVE, (12VDC) and you'll save yourself all of those headaches!
I actually went back and re-read the entire thread, and most of it was about "hater blockers". Your question regarding power supplies for a monitor was answered, and you even thanked me for my input... You already realized yourself that you needed (or might need) an inverter, and I told you how you could do it without one, so basically, now I have to wonder... did I answer your question or not? ------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: offroadzj
Date Posted: May 18, 2008 at 5:45 PM
i'll have to see if the 5v would be enough, but it might have to be 5.5 exactly (dont see what the big difference would be, but hey)lol
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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205
Posted By: daboss593
Date Posted: May 19, 2008 at 6:32 AM
the info lacking in my eyes was where to go to get the power supply needed which i already did. so although the ? was answ i didnt get the info where to go my bad *hands out some danty wipes*. sorry if any one got off *hands out more danty wipes*
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OWWWWWWWWWWW you said you discharged the cap!
Posted By: KPierson
Date Posted: May 19, 2008 at 10:31 AM
Order these parts from digikey.com: NJU7201L55-ND - 5.5 vdc 100mA voltage regulator LP2950CZ-3.3-ND - 3.3vdc 100mA voltage regulator Both are TO-92 components and shouldn't be hard to solder. If you need more current use multiple regulators in parallel. ------------- Kevin Pierson
Posted By: offroadzj
Date Posted: May 19, 2008 at 8:29 PM
exactly what I was looking for.
Thanks
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Kenny
Owner / Technician
KKD Garage LLC
Albany, NY 12205
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