CHALLENGER - Nema L9-20C - YELLOW PREMA SPEC LOCKING GROUNDING CONNECTOR READY TO SHIP - ONLY 90 LEFT IN STOCK! Female Connector NEMA L9-20C 600 VAC 20 AMP 2 POLE 3 WIRE Grounding Locking Yellow. UNMARKED - 409T0009XXX - Connector, jack. IN STOCK - MORE THAN 500 READY TO SHIP!Contact gender: male, 2.4mm. UNMARKED - CP-003B - 2.4MM DC PWR RECEPT PCB MOUNT RT ANGLE (DIGI-KEY P IN STOCK - MORE THAN 5,000 READY TO SHIP! 2.4mm DC power receptacle PCB mount RA. Min purchse per line item $1.00 = 2/$1.00 Learn More AMP INC - 582823-7 - Miniature 60 Pin wire wrap cable plug. IN STOCK - MORE THAN 100 READY TO SHIP!DUALATCH Miniature 60 Pin wire wrap cable plug. 582459-1 with 200532-1 aluminum housing (shield and cable clamp assembly), with two guide pins. One per sealed bag. ARROW -HART - 7486 - Connector, power. READY TO SHIP - ONLY 6 LEFT IN STOCK!Midget flanged inlet 3P 15A 125/250V 3W. Locking NEMA ML3-P (twist-lock). Connect only to non-grounding circuits.

CHALLENGER - 2961 - 20Amp 125V L-5 3-Wire Grounding Receptacle 20Amp 125V L-5 3-Wire Grounding Brown Cirlock receptacle 2-Pole 3-wire - BACK bare wire and SIDE screw-terminals UL378A Learn More Circle F Industries - 204542 - Connector, power. Male 2P 15A 125V. Circuit count: 3. Contact ampacity: 2P plus Gnd, 15Amp 125V. Mounting type: Panel, snap-in 1.050" square hole, no rear housing. Connection: 3/16" and 1/4" QC terminals. Note: Package of 10. EAGLE - 17-BU - Connectors, power. 30Amp 220V 4 wire RA ground plug. HUBBELL - 8-232 - AC CONN, TWIST LOCK DIS-CONNECT (RFE) READY TO SHIP - ONLY 60 LEFT IN STOCK!METAL TWIST LOCK DIS-CONNECT 5 POLE 4 WIRE & EQ GR. KB - 43R03 - Connector, power. IEC AC. 6Amp 250VAC. Gender: female. Mount: panel, snap-in. Dimensions: 1.285" (32.6mm) long x 1.002" (25.4mm) high, behind panel. Contacts: 1/4" male QC terminals. Note: Will mate our power cord SPH388/SPH386 SKU 2587, sold separately. Leviton - 70520-P - Connector, power.

2P 3 Wire 20Amp 125V. READY TO SHIP - ONLY 50 LEFT IN STOCK!2P 3 Wire 20Amp 125V. For 0.343" - 0.750" cord diameters. MELTRIC CORP - 61-10000-027 - DSN1 ANGLE Housing Blue angled housing for 63-14073 DSN1 20A 3-Phase Receptacle / 20AMP DECONTACTOR DSN1 ANGLE - with two rubber seals AND four screws. RUSSELL & STOLL - FS/FD3760 - Connector, circular. Male 4 pin 30Amp 600VAC/250VDC. READY TO SHIP - ONLY 13 LEFT IN STOCK!Circuit count: 4. Contact ampacity: 30Amp. Insulation voltage: 600VAC, 250VDC. Note: Manufactures box marked 3760. Amphenol - 8-090 - Connector, power. AC 2 conductor male plug, 15Amp 125VAC. READY TO SHIP - ONLY 0 LEFT IN STOCK!AC 2 conductor male plug, 15Amp 125VAC. Non-polarized. ARROW HART & HART - T-1323 - Connector, plug. 2 Conductor pull handle.2 Conductor pull handle radio cap. Old style polarized plug ie not large and small pins, but one pin is polarized partially angling out by approximately 1/4 of the piece. BOSCH - PA66+GF - Connector, shell.

Note: Looks like a locking connector for a wire harness. Bryant - 9-225 - Connector, power. NEMA 5-20Amp 125V M. READY TO SHIP - ONLY 86 LEFT IN STOCK!NEMA 3 Conductor 5-20Amp 125V Male. How Much Is An Acid Wash Pool Bulgin - PX0931/03/S - IP68 3-pin F Sealed Electrical Cable connectorGarden Furniture Centre Gazebo Panel mount Circular Female Receptacle. Mirrored Bedroom Furniture On EbayRoHS:Yes CE UL CSA VDE Learn More CHALLENGER - 2962 - 20A 250VAC LOCKING RECEPTACLE READY TO SHIP - ONLY 92 LEFT IN STOCK! 20A 250VAC BACK AND SIDE WIRED WITH SCREW TERMINALS CIRCLOK SINGLE LOCKING RECEPTACLE BLACK Learn More CHALLENGER - 3653 - 50A 125/250VAC SURFACE MT OUTLET READY TO SHIP - ONLY 27 LEFT IN STOCK!

50A 125/250VAC 3 POLE 4 WIRE SURFACE MOUNT POWER OUTLET SPEC GRADE Learn More CHALLENGER - 434-I - Duplex receptacle 15A 125VAC READY TO SHIP - ONLY 30 LEFT IN STOCK! Ivory & brown Duplex receptacle 15A 125VAC 2 POLE 3 wireNEMA 1-15R side wired. CHALLENGER - 5478-FI - Connector, AC receptacle. 20Amp 250VAC. Male 2 pole 3 wire, grounding. Flanged inlet, non locking. CHALLENGER - 961-8 - 15A 125VAC GRAY CORD END CONN RECTANGULAY GRAY 2 cond. 15A 125VAC CORD END CONNECTOR FEMALE WITH FLIP OPEN BODY WHERE CORD WOULD BE INSERTED. CHALLENGER - 1224A-GY - Switch, toggle. READY TO SHIP - ONLY 41 LEFT IN STOCK!Circuit count: 4 way. Insulation voltage: 120/277VAC. Housing material: plastic. Note: Grounded, quiet switch. Spring cleaning, and I'm trying to get power supplies for all my devices with missing power supplies. They're all the typical barrel power connector, and I'm having a dickens of a time trying to figure out the pin/hole diameter. I ordered the power supplies I needed based on outside diameter (e.g., 5.5mm in my example below) and was surprised to discover that while the jack fit, the center pin did NOT.

How do I prevent this from happening in the future? Do they even make calipers that can get into the hole to measure the pin diameter? Radio Shack has their little keyring behind the counter with every known tip size, but all they can get from that is which stock number fits on their universal wall wart. Personally, I think that these types of "universal" kits are the worst thing to happen to electronics in, like, FOREVER. Too many parts to misplace and the tip-to-cable connector is almost always proprietary. If I try to pump them for information about what the outer and inner diameters are, they want to know if I'm happy with my current cellular provider. As you may surmise, I'm not a big fan of trusting my local Radio Shack for electronics guidance. So...that leaves me with a bunch of power supplies that don't fit their devices, and me a little peeved that I have to deal with RMAs, return shipping, etc., especially when I really don't have a clue how to figure out what to order.

That also begs the question about how to ensure that I buy the right jack when designing something that NEEDS wall wart power. Where do I even start? Anyone have any ideas on how to finding the correct barrel & pin diameters when I don't have specs on the jack? Is it really trial and error? or is there some measurement device that's available to help? Those are barrel power connectors. Looking at Digikey, it looks like common inner diameters with a 5.5mm outer diameter are 2mm, 2.1mm, and 2.5mm, but that doesn't mean that your target application doesn't have a custom size which doesn't match any of these. The one I usually use for my projects is 2.1mm*5.5mm if I can, but as far as I know this is by no means a rule of thumb. Knowing what the jack is being used for may help in identifying a correct size. Vernier calipers can be used to measure both the inside diameter (i.d.) and outside diameter (o.d.). This works if you have only the device (receptacle) or the supply (plug).

Just look up a fractional inch to mm conversion chart. Then break out the drill bits. 5/64 inch = 1.9844 mm 3/32 inch = 2.3813 mm 7/64 inch = 2.7781 mm a 5/64 bit will fit the 2.1mm barrel but not a 3/32 a 3/32 bit will fit the 2.5mm barrel but not a 7/64 If you're using calipers, then use blue tack or something similar to make a mould of the internal dimensions of the plug or socket and measure the mold. I found that the easiest, but not the cheapest, way to determine the inside diameter of a 'barrel' connector is to use a set of "pin gages" which are hardended and ground to precise external diameter steel 'rods' that come in sets. A lot of times sets are available cheaply at discount tool supply places, or if you have a machine tool supply store available, individual gage pins can be ordered. Then you just take a 'pin' and try its fit in the inside of the connector. Be careful if anything in the connector is gold plated (doubtful) as the ends of the 'pins' are capable of scratching the plating off their being 'as machined' and not debured.

Wikipedia has a conversion matrix with conversions between the radioshack letter codes and actual measurements found here this way you can use the radioshack keyring to find an appropriate size connector and then buy the correct adapter. EIAJ is an acronym for Electronics Industries Association of Japan. EIAJ have now merged with the Japan Electronic Industry Development Association (JEIDA) to form the Japan Electronics and Information Technology Industries Association (JEITA). EIAJ developed a range of plugs and jacks for connection of low voltage power supplies toEIAJ plugs have now been widely adopted by Japanese and other consumer product manufacturers. similar in design to more commonly used Concentric Barrel Plugs. can usually be identified by a yellow coloured insulating ring at theEIAJ RC-5320A plugs are available in sizes to suit five VoltageEIAJ Type A (1, 2 and 3) have a hollow centre similar to the Concentric Barrel Plugs.

EIAJ Type B (4 and 5) have an internalThe EIAJ standard requires that these plugs are always wired with the centre pin as positive (+) polarity. Differentiating between 2.5 and 2.1 mm plugs is very simple. Strip the insulation off of a #12 solid wire- used commonly to wire houses. It is 2.05 mm diameter and will be loose in a 2.5 mm plug. It will just fit in a 2.1 mm plug and can only be slightly wiggled. An additional caution I learned the hard way: if trying to fit an appropriate barrel plug to a barrel jack, do not get a barrel plug which is exactly as wide as the jack. If you do this, you will not get good connection with the center pin, because that is made by the jack's sprung outer contact pressing the (rigid) plug sideways against the center pin, which can't happen if the plastic shell holds the plug centered. The radio shack plugs may not use a standard nomenclature, but it is also not arbitrary, here is the description for the size N connector: This metal panel-mount coax-style DC power jack accepts 5.5mm O.D.x2.5mm I.D. plugs.