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Old March 2nd 07, 06:55 AM posted to sci.electronics.design,alt.electronics,sci.electronics.basics
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Default Looking for simple and reliable voltage doubler 12-24v

Hello as the topic says i'm looking for a simple design for a 12 to 24 volt
convereter. I have been looking around and realize that there are charge
pumps, transfomer methods and inductor methods to use. When it comes down
to it i need up to .5 amps at the 24 volts and it needs to be reliable and
not sensitive to mechanical vibrations (to be mounted on something similar
to a gocart and run off of the 12 volt system) The smaller the package the
better no more than two cubic inches or so. This will be used to drive two
air solenoid valves for shifting and clutching. Any recomendations are
welcome. I know there are many maxim chips that are very much suitable for
the application but for some reason i feel somewhat hesitant to go the route
of a single IC. thanks in advance



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Old March 3rd 07, 01:48 AM posted to sci.electronics.design,alt.electronics,sci.electronics.basics
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Default Looking for simple and reliable voltage doubler 12-24v


"rkremser" wrote in message
.. .
Hello as the topic says i'm looking for a simple design for a 12 to 24
volt convereter. I have been looking around and realize that there are
charge pumps, transfomer methods and inductor methods to use. When it
comes down to it i need up to .5 amps at the 24 volts


Then you need to use a transformer - preferably with push pull drive.





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Old March 3rd 07, 03:45 AM posted to sci.electronics.design,alt.electronics,sci.electronics.basics
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Default Looking for simple and reliable voltage doubler 12-24v

On Fri, 2 Mar 2007 01:55:22 -0500, "rkremser"
wrote:

Hello as the topic says i'm looking for a simple design for a 12 to 24 volt
convereter. I have been looking around and realize that there are charge
pumps, transfomer methods and inductor methods to use. When it comes down
to it i need up to .5 amps at the 24 volts and it needs to be reliable and
not sensitive to mechanical vibrations (to be mounted on something similar
to a gocart and run off of the 12 volt system) The smaller the package the
better no more than two cubic inches or so. This will be used to drive two
air solenoid valves for shifting and clutching. Any recomendations are
welcome. I know there are many maxim chips that are very much suitable for
the application but for some reason i feel somewhat hesitant to go the route
of a single IC. thanks in advance


As your air solenoids presumably wouldn't require a regualted 24V, you may find
this off-the-shelf unit meets your requirements (unless you have compelling
reasons to build your own).

http://www.kemo-electronic.com/en/module/m029/index.htm
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Old March 3rd 07, 05:22 AM posted to sci.electronics.design,alt.electronics,sci.electronics.basics
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Default Looking for simple and reliable voltage doubler 12-24v

On Sat, 03 Mar 2007 01:48:26 GMT, "Homer J Simpson"
wrote:


"rkremser" wrote in message
. ..
Hello as the topic says i'm looking for a simple design for a 12 to 24
volt convereter. I have been looking around and realize that there are
charge pumps, transfomer methods and inductor methods to use. When it
comes down to it i need up to .5 amps at the 24 volts


Then you need to use a transformer - preferably with push pull drive.


---
Like you know something about it? "Charge pump" _requires_ a DC
output, so post a schematic instead of just flapping your jaws,
bonehead.

Come to think of it, I don't think I've ever seen you post anything
other than your self-serving run-of-the-mill drivel.

Geez, I wonder why???

Could it be because you're still the same (idiot electrician
licensed in Canada because you managed to bull**** your way through
the test) simple **** who couldn't figure out how to use a current
transformer?

More than likely.



--
JF
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Old March 3rd 07, 07:15 AM posted to sci.electronics.design,alt.electronics,sci.electronics.basics
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Default Looking for simple and reliable voltage doubler 12-24v


"rkremser" wrote in message
.. .
Hello as the topic says i'm looking for a simple design for a 12 to 24
volt convereter. I have been looking around and realize that there are
charge pumps, transfomer methods and inductor methods to use. When it
comes down to it i need up to .5 amps at the 24 volts and it needs to be
reliable and not sensitive to mechanical vibrations (to be mounted on
something similar to a gocart and run off of the 12 volt system) The
smaller the package the better no more than two cubic inches or so. This
will be used to drive two air solenoid valves for shifting and clutching.
Any recomendations are welcome. I know there are many maxim chips that
are very much suitable for the application but for some reason i feel
somewhat hesitant to go the route of a single IC. thanks in advance


--
Posted via a free Usenet account from http://www.teranews.com


I have some 24v hydraulic valves that work just fine at 12v -- so just for
grins -- try tripping the solenoid on 12v -- its just an electromagnet and
may pull suffciently to operate on the lower voltage




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Old March 3rd 07, 02:14 PM posted to sci.electronics.design,alt.electronics,sci.electronics.basics
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Default Looking for simple and reliable voltage doubler 12-24v

On Fri, 2 Mar 2007 01:55:22 -0500, "rkremser"
wrote:

I know there are many maxim chips that are very much suitable for
the application but for some reason i feel somewhat hesitant to go the route
of a single IC. thanks in advance


Use the Maxim solutions. THey are the best possible solution. Sure,
you could 'roll your own' with discrete components, but that's the
hard way, will be less reliable, and probably be *much* larger in the
end.
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Old March 3rd 07, 03:55 PM posted to sci.electronics.design,alt.electronics,sci.electronics.basics
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Default Looking for simple and reliable voltage doubler 12-24v

In article ,
PeterD wrote:
On Fri, 2 Mar 2007 01:55:22 -0500, "rkremser"
wrote:

I know there are many maxim chips that are very much suitable for
the application but for some reason i feel somewhat hesitant to go the route
of a single IC. thanks in advance


Use the Maxim solutions. THey are the best possible solution. Sure,
you could 'roll your own' with discrete components, but that's the
hard way, will be less reliable, and probably be *much* larger in the
end.


I assume you work for Maxim.

The OP can get a DC-DC convert from almost anyone else for the job. Look
in Digikey.


--
--
forging knowledge

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Old March 3rd 07, 05:02 PM posted to sci.electronics.design,alt.electronics,sci.electronics.basics
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Default Looking for simple and reliable voltage doubler 12-24v

On Mar 3, 9:14 am, PeterD wrote:
On Fri, 2 Mar 2007 01:55:22 -0500, "rkremser"

wrote:
I know there are many maxim chips that are very much suitable for
the application but for some reason i feel somewhat hesitant to go the route
of a single IC. thanks in advance


Use the Maxim solutions. THey are the best possible solution. Sure,
you could 'roll your own' with discrete components, but that's the
hard way, will be less reliable, and probably be *much* larger in the
end.



Sure rolling your own may be more work, but I doubt that it will be
any larger and is ,in fact, likely to be smaller. I have done a
number of PS designs and they mostly were smaller than off the shelf
designs, also cheaper. But the work is not trivial, even with a
design example. In automotive apps (not sure how similar go-carts are
to autos in this regard) you need a lot of input protection way beyond
anything you see in other environments. Unless a module is designed
for that it is likely to fail at a high rate. This applies to both
bought modules and self designed ones.

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Old March 3rd 07, 09:15 PM posted to sci.electronics.design,alt.electronics,sci.electronics.basics
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Default Looking for simple and reliable voltage doubler 12-24v

On 2007-03-03, Homer J Simpson wrote:

"rkremser" wrote in message
.. .
Hello as the topic says i'm looking for a simple design for a 12 to 24
volt convereter. I have been looking around and realize that there are
charge pumps, transfomer methods and inductor methods to use. When it
comes down to it i need up to .5 amps at the 24 volts


Then you need to use a transformer - preferably with push pull drive.


huh? a charge pump needs push-pull but no transformer.
and a boost converter needs only a single ended drive on the inductor




--

Bye.
Jasen
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Old March 4th 07, 12:51 AM posted to sci.electronics.design,alt.electronics,sci.electronics.basics
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First recorded activity by DIYBanter: Aug 2006
Posts: 1,245
Default Looking for simple and reliable voltage doubler 12-24v


"jasen" wrote in message
...

Then you need to use a transformer - preferably with push pull drive.


huh? a charge pump needs push-pull but no transformer.
and a boost converter needs only a single ended drive on the inductor


for 12 W?





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