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 > DC to DC converter for small electronics

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theoldwizard1

SE MI

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Posted: 05/22/21 05:39am Link  |  Quote  |  Print  |  Notify Moderator

JoeChiOhki wrote:

So, something I also found during my searching, which might be a viable solution is Pico makes a small DC-DC Converter for UPS type functionality.

https://www.mini-box.com/picoUPS-100-12V........C-micro-UPS-system-battery-backup-system

Requires 15V - 18V input.

adamis

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Posted: 05/22/21 07:35am Link  |  Quote  |  Print  |  Notify Moderator

I am on my phone so couldn't read through the entire thread and don't know if this has been mentioned but you are looking for something like this I think.


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FWC

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Posted: 05/22/21 08:26am Link  |  Quote  |  Print  |  Notify Moderator

theoldwizard1 wrote:

FWC wrote:

This will do what you want:

Victron DC-DC Converter

Output range 10V - 15V.

Do the "double conversion" (DC - AC - DC). Safer !


The converter is adjustable over that range. It will regulate the output to better than 0.2V of the setpoint with less than 0.002V of noise.

This will work well for this application.

JoeChiOhki

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Posted: 05/22/21 10:53am Link  |  Quote  |  Print  |  Notify Moderator

Camper_Jeff_&_Kelli wrote:

Hey Matt, So I take it you're trying to eliminate a 120 volt wall cord and go straight into the 12 volt connector using the 12 volt system of the house which will be 14.4 or 14.6 at times. 13.7 or 13.2 at others. and 12.8, 12.6 and going lower as the evening progresses until the engine or generator start charging. Sounds like the Victron may be the solution you're looking for. Since this NAS is going to be rattling around in the truck camper, are you going to be using SSD drives? Will your NAS accept smaller 2.5 drives? I have a couple LACIE 4T USB drives RAID capable if desired. It's a much simpler solution than a hardwired NAS unit in the TC and easier to take with you if needed. Probably not as capable though as a true NAS designed to serve several work stations but will easily work for one person/computer. I saw the RV GEEKS on YouTube the other night, released a video on their electronic communication and NAS system. They had a NAS with I recall 6 full sized bays but I don't recall if they plugged into 120 volt or adapted to use 12 volt. They have a huge LION battery system so I suspect they used 120 volt and let the unit make it's own clean power. Hope it works out whatever you end up with.


The nas in question is a small low power single drive qnap unit, it will easily use any 2.5 or 3.5 inch sata drive (it currently has a 6tb wd red pro nas drive in it, that will be getting swapped out for an intel ssd).

Its primary purpose is to act as the house plex server (do it yourself netflix), that we'll be syncing what we want for a trip from the big plex server at the house.

Its not really used for anything, I bought it for a short term project a few years back and its been collecting dust ever since.

So, I'm combining it with the campers network extender as part of the Amerigos systems.

* This post was edited 05/22/21 11:01am by JoeChiOhki *


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JoeChiOhki

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Posted: 05/22/21 11:03am Link  |  Quote  |  Print  |  Notify Moderator

adamis wrote:

I am on my phone so couldn't read through the entire thread and don't know if this has been mentioned but you are looking for something like this I think.


Its definitely close and another idead to look for as I know some old laptops had 12v power supplies

mbloof

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Posted: 05/22/21 03:50pm Link  |  Quote  |  Print  |  Notify Moderator

A quick peek at Amazon lists dozens of step up/down converters with 12V output.

https://www.amazon.com/KNACRO-Regulator-Automatic-Converter-Waterproof/dp/B08TSZG8RC/ref=sr_1_17?dchild=1&keywords=DC-DC+step+up+and+down+12v&qid=1621719998&sr=8-17

Simply pick and order one.


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Camper_Jeff_&_Kelli

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Posted: 05/22/21 04:09pm Link  |  Quote  |  Print  |  Notify Moderator

JoeChiOhki wrote:

Camper_Jeff_&_Kelli wrote:

Hey Matt, So I take it you're trying to eliminate a 120 volt wall cord and go straight into the 12 volt connector using the 12 volt system of the house which will be 14.4 or 14.6 at times. 13.7 or 13.2 at others. and 12.8, 12.6 and going lower as the evening progresses until the engine or generator start charging. Sounds like the Victron may be the solution you're looking for. Since this NAS is going to be rattling around in the truck camper, are you going to be using SSD drives? Will your NAS accept smaller 2.5 drives? I have a couple LACIE 4T USB drives RAID capable if desired. It's a much simpler solution than a hardwired NAS unit in the TC and easier to take with you if needed. Probably not as capable though as a true NAS designed to serve several work stations but will easily work for one person/computer. I saw the RV GEEKS on YouTube the other night, released a video on their electronic communication and NAS system. They had a NAS with I recall 6 full sized bays but I don't recall if they plugged into 120 volt or adapted to use 12 volt. They have a huge LION battery system so I suspect they used 120 volt and let the unit make it's own clean power. Hope it works out whatever you end up with.


The nas in question is a small low power single drive qnap unit, it will easily use any 2.5 or 3.5 inch sata drive (it currently has a 6tb wd red pro nas drive in it, that will be getting swapped out for an intel ssd).

Its primary purpose is to act as the house plex server (do it yourself netflix), that we'll be syncing what we want for a trip from the big plex server at the house.

Its not really used for anything, I bought it for a short term project a few years back and its been collecting dust ever since.

So, I'm combining it with the campers network extender as part of the Amerigos systems.


Would not this be much simpler LACIE USB-C 3.1 5T $170.00
I have a couple of these and they work very well. Lots of storage, fast, cheap, ruggedized. Plays video to your laptop nicely. There is a Thunderbolt version. They also have SSD versions but the price may be unnecessarily scary. Best of all, it's portable, take it with you and use it where you need it. Just presenting ideas for you.


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JoeChiOhki

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Posted: 05/24/21 06:31pm Link  |  Quote  |  Print  |  Notify Moderator

Camper_Jeff_&_Kelli wrote:

JoeChiOhki wrote:

Camper_Jeff_&_Kelli wrote:

Hey Matt, So I take it you're trying to eliminate a 120 volt wall cord and go straight into the 12 volt connector using the 12 volt system of the house which will be 14.4 or 14.6 at times. 13.7 or 13.2 at others. and 12.8, 12.6 and going lower as the evening progresses until the engine or generator start charging. Sounds like the Victron may be the solution you're looking for. Since this NAS is going to be rattling around in the truck camper, are you going to be using SSD drives? Will your NAS accept smaller 2.5 drives? I have a couple LACIE 4T USB drives RAID capable if desired. It's a much simpler solution than a hardwired NAS unit in the TC and easier to take with you if needed. Probably not as capable though as a true NAS designed to serve several work stations but will easily work for one person/computer. I saw the RV GEEKS on YouTube the other night, released a video on their electronic communication and NAS system. They had a NAS with I recall 6 full sized bays but I don't recall if they plugged into 120 volt or adapted to use 12 volt. They have a huge LION battery system so I suspect they used 120 volt and let the unit make it's own clean power. Hope it works out whatever you end up with.


The nas in question is a small low power single drive qnap unit, it will easily use any 2.5 or 3.5 inch sata drive (it currently has a 6tb wd red pro nas drive in it, that will be getting swapped out for an intel ssd).

Its primary purpose is to act as the house plex server (do it yourself netflix), that we'll be syncing what we want for a trip from the big plex server at the house.

Its not really used for anything, I bought it for a short term project a few years back and its been collecting dust ever since.

So, I'm combining it with the campers network extender as part of the Amerigos systems.


Would not this be much simpler LACIE USB-C 3.1 5T $170.00
I have a couple of these and they work very well. Lots of storage, fast, cheap, ruggedized. Plays video to your laptop nicely. There is a Thunderbolt version. They also have SSD versions but the price may be unnecessarily scary. Best of all, it's portable, take it with you and use it where you need it. Just presenting ideas for you.


Unfortunately, that's just a basic hard drive, I have many of those already [emoticon].

We're setting up a mini-netflix, because more than one person can stream from it simultaneously (We have this at home with around 30TB in the current drive farm, I'm just miniaturizing it for a travel version with hardware I already own) using any number of devices (My wife likes to stream from her tablet).

In my case, I usually watch with our Roku on the TV, while dawn watches a different show on her tablet or her phone.

I am leaning at this point toward using this unit with the inverter vs the direct DC power, and instead use the DC to DC converter for the network extender, as it uses a lower voltage on its input than the nas does.

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Posted: 05/25/21 09:13pm Link  |  Quote  |  Print  |  Notify Moderator

JoeChiOhki wrote:

Bedlam wrote:

DC to DC conversion typically uses pulse width modulation with a feed back loop to keep the voltage regulated at a set reference under varying loads. The power is pretty dirty until filtered through some capacitors. It used to be easy to pick up all these components and scale it to your needs, but stores and user knowledge have been dieing out.


Yeah, finding any kind of small components is getting troublesome. I couldn't even find the same single pole 12 volt illuminated switches I had bought less than ten years ago (I ended up cannibalizing the originals out of Mr. KIT because I couldn't find anything nowadays half as decent a quality).

DigiKey and Mouser are still around for parts.


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Camper_Jeff_&_Kelli

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Posted: 05/26/21 12:23pm Link  |  Quote  |  Print  |  Notify Moderator

Hey Matt, Check this video out for fun. This guy is a technical wiz and created a NAS system from parts he had. He has a 5 volt power supply for his setup and a Raspberry PI is the controller. IT may or may not be useful to you but it is interesting to see what can be done if you have the knowledge. Hope you have your setup figured out by now. Looking forward to a full report upon completion and implementation...

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