Thread: Schematics/Pin Outs/Diagrams

Originally Posted by W3bMa5t3r

Since it was brought up elsewhere, I figured I'd post it in here as well since this is an appropriate section.

If you need to drop 12vdc down to say 6vdc or 8vdc for external devices (hubs, tv tuners, etc), you can use the calculator -HERE- to figure the resistors needed to drop the voltage. It will even show you the circuit to build. This is a voltage divider circuit.

Just a warning, dont try to use this circuit with high amperage items, unless you are prepared to get rid of some serious heat and buy some monster heatsinked resistors. Some of these USB hubs and such draw upwards of 2.5A which to put through a resistor is some serious wattage. In those cases you have to go with a switching power supply, or even a high amperage linear chip.

Originally Posted by jcdillin

Just a warning, dont try to use this circuit with high amperage items, unless you are prepared to get rid of some serious heat and buy some monster heatsinked resistors. Some of these USB hubs and such draw upwards of 2.5A which to put through a resistor is some serious wattage. In those cases you have to go with a switching power supply, or even a high amperage linear chip.

lol good point. I was only thinking of dropping the voltage, not really the overall outcome from doing so... I guess this is good for the low current apps, but not for the hubs, etc like you said. I think my hub's pull is ~1.75A.

Hey, here is a diagram of my inverter/PC power-on/shutdown control.

It's a pretty big picture, but the file size is small. Less than 50k.

http://www.dynamic-i.com/carpc/inver...-controlle.gif

Here's a smaller version.


Quickly-found link to cube timer:
Here's one for $20. http://www.weisd.com/store2/NATQ4F-00010-326.html

Ok well I searched ALLL over and though I'm sure I read about it somewhere I couldn't find it, so I have decided to post what I found along with a diagram of what I found. :-)

This is for a Dell Latitude D800 Laptop Power Supply Brick (and I'm 'assuming' all the other laptops that this brick and similar support).

Basically there are 3 wires coming from the brick to the laptop. It was easy enough to figure out the +19.5vdc and the GND, but the third wire... wasn't sure if it was needed and if all hell would break loose if not connected or whatever...

So... here's the diagram

The Power Supply Type Wire IS NOT NEEDED, but when you power on the laptop, the BIOS will say that it can't tell what power supply is connected. Just say you know and you don't want to be bothered by the prompts again. You're golden ;-) Hope this helps.

Originally Posted by 4u2n

Here is the total pinout for the Blaupunkt

This is complete for newer models:


And for old models:

Thank you for the pin out diagram, I finally have an excuse to replace my after market stereo with a stock Ford Blaupunkt unit.

Code:

KCE-422i pin	Corresponding iPod dock pin(s)
------------	------------------------------
1		3     (Line-out, Right +)
2		21    (Accessory Indicator)
3		12    (Serial Tx)
4		4     (Line-out, Left +)
5		19,20 (FireWire +12VDC [in])
6		18    (+3.3VDC [out])
7		13    (Serial Rx)
8		2     (Line-out, Common GND)
9		11    (Serial GND)
10		16    (USB GND)
Jacket		29,30 (FireWire GND)

Dock connector pin designations from Dock Connector - wikiPodLinux

EL Backlight with inverter HD44780 character LCD Diagram

Originally Posted by Chairboy

gah, no sense of humor.

Quick method for regulating 12+ to 12v steady. There's a voltage drop off of around 1v or so. Using a 7505 or 7509, you can get regulated 5v or 9v too respectively.

Note: Less then 1 amp load. You cannot get regulated 3amps by just using 3 7512s or the like, so don't try.

you need a big capacitor too cause the diodes in youre alternator might not be all there cap goes across output and should be more than 15v . I would take one out of a existing 110v to any DC output power pack and use that type capacitor this would get less ripple on scope reading! GOOD LUCK.
an 340t5 is a 5v one and hooks up same . I use them in Atari2600
2200uF 16v should work if you want quality pick a 50v one! this should eliminate ripple out out put of regulator just fine...