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Powering a Flex in a car?? 1 year 4 months ago #60502

  • banshee28
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So I previously used my DDRC-24 in my car using the MIniDCIsolator and it worked perfectly! However reading the specs on it, its 3W max. Looks like I need around 10W input for the Flex (Digital)?

Any suggestions? I was thinking of using something like this DROK and adjusting it to 12V and 1A which is close to 10W, but not sure thats optimal?

DROK: www.amazon.com/DROK-Adjustable-Converter...e/dp/B07JZ2GQJF?th=1
 

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Powering a Flex in a car?? 1 year 4 months ago #60565

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I put my flex in a car , I powered it off a single minidc and it worked, for a little while…

i just purchased 3X minidc and plan on parallel 
the outputs with a Schottky diode between them until I realized something….

16v , 500,000 µF cap or a small super cap should be ample and supply plenty of peak current…

here’s what I think would work fine 
a single minidc and this 

www.amazon.com/Shaluoman-Farad-Capacitor...a%2Caps%2C198&sr=8-8


just make sure to have proper fusing, once charged , this cap will supply hundreds of potential amps instantly…..  a small plastic box would be a good idea and silicone the board down inside it 



that buck converter might work….. I don’t know how it’s isolation works 
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Powering a Flex in a car?? 1 year 4 months ago #60571

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I put my flex in a car , I powered it off a single minidc and it worked, for a little while…



that buck converter might work….. I don’t know how it’s isolation works 

So was thinking of that or a AC>DC converter for the car such as this: www.amazon.com/dp/B004MDXS0U?ref_=cm_sw_...241R7MHSTWAT7JGN17KP. Seems like it would work?
 

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Powering a Flex in a car?? 1 year 4 months ago #60573

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No don’t go 12v to 120vac 

it will have horrendous noise.. that’s probably the worst idea…..


you can put regular car power into it it will just have noise…. I once used two sets of GLI at the output and got rid of noise on a ddrc24…

it just needs isolation, you can ram regular car battery power into it all day…

i would simply buy 3X minidc and parallel the outputs,…. I did and it worked 

I put a three amp Schottky diode on all the negatives on each output  but I really don’t think I needed to do that…. I was just thinking if one goes out it won’t take the others with it 

im 100% confidant 3 minidc in parallel will work perfectly 

andrew aka oabe 

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Powering a Flex in a car?? 1 year 4 months ago #60659

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No don’t go 12v to 120vac 

it will have horrendous noise.. that’s probably the worst idea…..


you can put regular car power into it it will just have noise…. I once used two sets of GLI at the output and got rid of noise on a ddrc24…

it just needs isolation, you can ram regular car battery power into it all day…

i would simply buy 3X minidc and parallel the outputs,…. I did and it worked 

I put a three amp Schottky diode on all the negatives on each output  but I really don’t think I needed to do that…. I was just thinking if one goes out it won’t take the others with it 

im 100% confidant 3 minidc in parallel will work perfectly 

andrew aka oabe 
Thanks Oabe!

I will consider that!

However, what would be really nice is if Mini would build and sell one of these units that would support larger units such as the Flex in a car! They already have several car products so it seems like a great transition to do so now. Not sure I want to pay for 3 of these, but will see. It sounds like yours is working great.
 

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Powering a Flex in a car?? 1 year 4 months ago #60716

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There only 15$ lol 

i ran one off a single, it worked fine 
then it stopped…. But only to discover it didn’t blow…. The minidc still works 

I have 3 running it now….. no problems at all 
and super quiet operation….. man the ddrc stuff is ultra quiet with a minidc ……

i wonder if all these home audio folks that complain of humm might benefit from using cleaner dc 

idk 


but I would not let such a cheap silly part discourage you….. 

 

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Powering a Flex in a car?? 1 year 4 months ago #60717

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And if your worried about the extra 15$ 

go get a 1/2farad 16v polarized cap and cap the outputs 


you can pick one up for about 8$ 

I would go for another minidc tho 

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Powering a Flex in a car?? 1 year 4 months ago #60736

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There only 15$ lol 

i ran one off a single, it worked fine 
then it stopped…. But only to discover it didn’t blow…. The minidc still works 

I have 3 running it now….. no problems at all 
and super quiet operation….. man the ddrc stuff is ultra quiet with a minidc ……

i wonder if all these home audio folks that complain of humm might benefit from using cleaner dc 

idk 


but I would not let such a cheap silly part discourage you….. 

Yea, I only have one so would need 2 more, so $30 plus $30 in shipping. NO worries, can also get on Amazon for the same price so will prob choose one option. Its not that big of a deal, just trying to figure things out. Thanks!
 

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Powering a Flex in a car?? 1 year 4 months ago #60750

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What Amazon are u talking about 

a buck converter isn’t an isolator

Maybe I’m wrong , a buck converter uses field effect transistors to regulate voltage…. It’s a switching power supply 

I think that’s a different critter….. idk 
maybe I’m mistaken 

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