12vdc to 24vdc

atvguy585 · #1 (**permalink**) 11-05-2009, 03:34 PM

As I understand, some radio equipment used to be or can still be 24vdc requiring an inverter or dc to dc converter in a 12vdc system. I thought I would see if anyone here has had that problem? If so, did you find a solution. I don't need more then 400mA of power but I need to take 12vdc and turn it into 24vdc. I would like to find an inexpensive converter or a schematic to build one. A kit with all the stuff would be the best way to go because I wouldn't have to make a pcb board.

MPSCS · #2 (**permalink**) 11-05-2009, 03:42 PM

Is this requirement for your car, portable, or home base?

atvguy585 · #3 (**permalink**) 11-05-2009, 03:51 PM

I need it for the mobile. I need to have 24vdc coming from my 12vdc vehicle.

MPSCS · #4 (**permalink**) 11-05-2009, 04:37 PM

I checked Ebay, and they have a few 24vdc-to-12vdc, but no 12vdc-to-24vdc. A quick Google search turned up a lot of options. One in particular that caught my eye is this:

FP-DCC1 12 Vdc to 24 Vdc Converter

atvguy585 · #5 (**permalink**) 11-05-2009, 04:48 PM

Yah, I have those at work. The bad thing is that they are a little over $100 my cost. I'm trying to see if someone knew of a cheaper alternative. I'm looking to spend under $40 on one.

MPSCS · #6 (**permalink**) 11-05-2009, 04:51 PM

I was going to suggest a second 12v Gel-Cel in series with the vehicle battery. But then I got to thinking about common grounds, charging issues, etc. I'm sure there would be a safe way to make it all work, but I'm too tired to figure it out right now.

atvguy585 · #7 (**permalink**) 11-05-2009, 04:54 PM

Quote:

Originally Posted by MPSCS

I was going to suggest a second 12v Gel-Cel in series with the vehicle battery. But then I got to thinking about common grounds, charging issues, etc. I'm sure there would be a safe way to make it all work, but I'm too tired to figure it out right now.

I was thinking the same until I realized all of the above issues as well. If you can give me some ideas on how to make something like that work when your awake, I would appreciate it.

MPSCS · #8 (**permalink**) 11-05-2009, 05:31 PM

Is the 24v device connected to the vehicle's ground in any manner? ie; Power lead, metal enclosure, antenna ground, etc?

atvguy585 · #9 (**permalink**) 11-05-2009, 07:28 PM

This is what I'm hooking up.....

ST-PA6 Audio Power Amplifier - 6 Watts

N_Jay · #10 (**permalink**) 11-05-2009, 08:03 PM

Probably better just to get a different amp.

atvguy585 · #11 (**permalink**) 11-05-2009, 08:14 PM

Quote:

Originally Posted by N_Jay

Probably better just to get a different amp.

Well considering I got it for free, I was hoping to find some way to use it. Most of the small amps I've seen are no less then $70.

I did find this which I might give a try....

12V To 24V DC-DC Converter Circuit