Dell Studio Hybrid (Installed in vehicle, 12v-24v) - Page 3

wywywywy · 08-27-2008, 03:01 PM

I think the 10v is to tell the laptop whether its a "Dell optimised" power supply. I've seen aftermarket 3rd party power supply that come without this pin, and when booting the laptop it will say "it is not a Dell power supply blah blah blah" and let's you carry on.

Fiberoptic · 08-27-2008, 03:09 PM

Quote: Originally Posted by wywywywy

I think the 10v is to tell the laptop whether its a "Dell optimised" power supply. I've seen aftermarket 3rd party power supply that come without this pin, and when booting the laptop it will say "it is not a Dell power supply blah blah blah" and let's you carry on.

That would be a pain in the a$$ (pun intended) if you were trying to use your backup camera.

BlueGhost · 08-27-2008, 03:15 PM

This thing uses a mobile processor and a power brick, I'm willing to bet the power brick is the same one dell uses on laptops. Dell also sells a 65W brick for powering their laptops off DC, I bet it would work with the Studio Hybrid if your using one of the low end processors.

Fiberoptic · 08-27-2008, 03:18 PM

Quote: Originally Posted by BlueGhost

This thing uses a mobile processor and a power brick, I'm willing to bet the power brick is the same one dell uses on laptops. Dell also sells a 65W brick for powering their laptops off DC, I bet it would work with the Studio Hybrid if your using one of the low end processors.

It is possible that a DC Dell brick might work but it definitely wouldn't be ignition integrated (computer starts up and shuts down with the key). For that you would want to integrate it into a Carnetix product (p1900 or p2140) or another start up and shut down controller.

wywywywy · 08-27-2008, 06:06 PM

Quote: Originally Posted by Fiberoptic

That would be a pain in the a$$ (pun intended) if you were trying to use your backup camera.

There is an option to tell it to not warn again. I think its in the bios.

kibble · 08-27-2008, 08:26 PM

Quote: Originally Posted by wywywywy

I think the 10v is to tell the laptop whether its a "Dell optimised" power supply. I've seen aftermarket 3rd party power supply that come without this pin, and when booting the laptop it will say "it is not a Dell power supply blah blah blah" and let's you carry on.

You know what? Now that I think about it, most of the dell laptops we use at work are ordered with the docking station and case and everything. There are a total of three power supplies included with the laptops; Two are 3.somthing amps and the fourth is 4.something. The 4somthing amp one is used for the docking station but will also fit in the laptop. However, if you try to use one of the 3 amp ones in the docking station, you'll get a message saying that the power supply is not the right amperage and it will not let you use the computer, it'll shut it down. I wonder if that's where the middle pin comes in?

ik632 · 08-27-2008, 08:56 PM

I just had that happen today with my new laptop. There are 2 adapters, a big one and a smaller one. The big one works with the docking station or the laptop but the small one only works with the laptop.

On another note, my wife has one of the little 14" Latitudes for work (I have a 17" Precision) and her charger has the same pinout and voltage but my laptop doesn't even recognize it. Hers works with my larger adapter though. So, I think there are 3 sizes.

Dan2008 · 08-28-2008, 07:45 AM

There are actually five different AC adapter styles for Dell laptops: round with two sizes, D-shaped with two sizes and a flat connector.

From what I have learned the center pin is "data" and the voltage output on it allows the laptop to identify whether the adapter supplies enough power for the computer. Most 65W adapters apparently send 8VDC to the center pin and 90W adapters send 10VDC to it.

If the center pin is missing the BIOS sends the "Not a Dell adapter" message and if the voltage is too low it sends the "Incorrect adapter" message.

These messages can be disabled in BIOS.

CAVEAT: This information is for Dell laptops. I assume it applies for the Studio Hybrid.

lanman1 · 08-29-2008, 08:08 AM

FYI, from the posted image, the connector looks to be the same one used on Dell's D series Latitudes. The voltage on them is 19.5v as well. There are a myriad of 12v power supplies available from 3rd parties as this power configuration for Dell has been around for several years(4-5 if memory serves me correct).

RyanB95 · 09-01-2008, 02:17 PM

Quote: Originally Posted by lanman1

FYI, from the posted image, the connector looks to be the same one used on Dell's D series Latitudes. The voltage on them is 19.5v as well. There are a myriad of 12v power supplies available from 3rd parties as this power configuration for Dell has been around for several years(4-5 if memory serves me correct).

Agreed. The power connector on the back of the hybrid looks identical to the one on my Latitude D630 Laptop.

And yes, there are TONS of 3rd party companies that make travel adapters and whatnot.

WayneVanRooyen · 09-12-2008, 05:13 AM

I took delivery of one of these the other day, i tell you one small little sucker
some picks below, included with the unit is a cable for the dvi last pic,
a standard dell monitor with dvi connector. The power brick is a lot smaller than the standard power bricks that come with notebooks, it is actually about 1cm thick, measured voltage is 19.6V, yes that is a cigarette box on top of the unit, i did this to try and show size. Next wonderful thing is once all the casings are removed it slips right into a double din headunit space, anyone getting the picture.

Fiberoptic · 09-12-2008, 08:59 AM

Thanks for the photos! This is great.

Would you be able to take a high resolution photo of where the power button connects to the motherboard? it would be really nice to have the p2140 or the p1900 be able to control the on off state of the computer based on ignition status of your boat or car.

There are tons of adapters out on the market for dell laptops. There are a few drawbacks to using one of those with the dell studio:

There is no built in battery on the dell studio. If your cig lighter is ignition switched it will immediately kill power to your PC causing a hard shut down.
If your cig lighter is not ignition switched and you forget to turn off your pc you will have a dead battery.
No auto shut down (as I mentioned above)

All of these issues are solved by the p2140 and the p1900. (shut down time, low voltage, auto shut down)

Good luck with the install.

Dan2008 · 09-12-2008, 12:30 PM

So, if I understand correctly, the p1900 and p2140 send a SIG_POWER to the computer just like a UPS? That's great method.

Fiberoptic · 09-12-2008, 02:18 PM

Quote: Originally Posted by Dan2008

So, if I understand correctly, the p1900 and p2140 send a SIG_POWER to the computer just like a UPS? That's great method.

There are two ways of doing this.

1. p2140/p1900 can act as a switch bringing both pins to ground having the same effect as a standard power button.
2. The p2140 only can send an ACPI power command over the USB bus. This is a new feature and is not supported by all hardware. We have not tested it with the dell studio edition but we have had success with newer hardware in the past.

djphibes · 09-13-2008, 09:44 PM

I used to work @ dell, left before these suckers came out, the power on is a tricky beast. the dimension and optiplex line typically had a ribbon that went from mobo to "i/o panel" aka the front. If we thought the panel was bad, we'd unplug it, and if we were right, the computer would boot right up. This leads me to beleive that the switches are typically normally closed. I'm not sure if this guy is the same or not, since it looks like its all on the mainboard, much like the USFF chassis were.

I have some friends still working @ dell, lemme know if you need more info.

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