Standard Wallwart (AC adapter) Lableling

Intro:

Do you have a collection of electronic gear that gets it's power from an external AC power supply, sometimes called Wallwarts? Then I would bet that the supplies get separated from the electronic device, and collect some where. Or do you buy surplus ones for use on various projects,or collect them from things that quit. If so, I bet you would like a quick way to match a supply for a device. I have devised this method.

Each supply and device is fitted with a label with a code similar to that below.

8E5+

The code is Divided into four units, which is:

8E5+
The first is a number , which specifies voltage as how many 1.5V cells would power a device, as a good deal of them are used to power something from AC in stead of a batteries.
Precede it with a V , you could specify actual voltage instead of cell capacity.

8E5+
The second is a letter, designating the plug fitting on the DC output.

8E5+
The third is current rating, in hundred miliamperes.

8E5+
The fourth is polarity, + means positive tip, - means negative tip, A means AC out. A U after the polarity symbol could mean an unfiltered supply, a C means a supply for charging a rechargable battery device.
You could leave it off to indicate a default polarity, which I use mostly Positive tip devices.

My example specifies a 12V 2.1 Center,3.0 outside coaxial plug, 500 ma (0.5A), Positive tip General Purpose supply. Alternatively, it could be a V12E+

Here is an example list of plug fitting designation (In MM, O.D/I.D):
A: 2.35/0.7
B: 4.0/1.7
C: 4.75/1.7
D: 5.5/3.3
E: 3.0/1.1
F: 3.4/1.1
G: 3.8/1.1
H: 5.0/1.5
I: 5.0/2.1
J: 5.0/2.5
K: 5.5/2.5
L: 5.5/2.8
M: 5.5/3.8 1.8 mm pin
N: 6.3/3.0
O: 6.9/4.2 0.7 mm pin
P: 3/32(2.5mm) phone plug
Q: 1/8 (3.5mm) Phone plug
R: RCA plug
S: Snap as on 9V battery, Male snap is Tip.
T: DIN plug
U: plug like AC removeable cord on many portable radios.
W: Bare Wires,lugs, or alligator clips
X: Bi-pin as used on some universal supplies
Y: Bi-pin as used on other universal supplies
Z: terminal screws on wallwart

Pleas read my disclaimer

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