Product Overview
A Palm-Sized Nemic-Lambda 12 Volt Rail With Its Own Adjustment Screw
Condition
This is the single unit in the photos, shown from every side. It came to us unused, unpackaged and without OEM documentation, and it has been bench tested and evaluated here. The painted case photographs clean apart from a few faint surface marks, the clear cover sits in place over all six screw terminals, and the green POWER ON lamp, the voltage adjustment trimmer, the front panel markings, the agency marks and the corner mounting flanges show no damage in these photos. A white barcode label on the underside is an inventory code and has nothing to do with the part number.
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Product Overview
The EWS15-12 is an enclosed AC/DC switching power supply from Nemic-Lambda, the Japanese arm of the Lambda power supply lineage that trades today as TDK-Lambda. The case marking gives the output as 12 V DC at 1.4 A and the input as 85 to 250 V AC or 110 to 330 V DC, 47 to 63 Hz, 0.5 A, which covers 100, 120 and 230 volt mains without a range switch. Output is trimmable at the front panel, marked V. ADJ. plus or minus 10 percent with an arrow pointing toward H, and a green POWER ON lamp sits directly above the trimmer. Every connection lands on one six position screw terminal block marked +V, -V, FG, ACG, L and N, protected by a clear cover over the terminals. The case is a vented painted enclosure with mounting flanges at the corners, approximately 3.54 in L x 1.38 in W x 3.82 in H (90.0 mm x 35.0 mm x 97.0 mm) per our records, and it carries UL, CSA (marked LEVEL 3) and TUV Product Service marks on the front. Anything beyond what is printed on the case, including ripple, line and load regulation, hold-up time and temperature derating, is not confirmed - verify against the datasheet before use.
Key Features
- Output marked 12 V DC at 1.4 A
- Input marked 85 to 250 V AC, 110 to 330 V DC, 47 to 63 Hz, 0.5 A
- Front panel output adjustment marked V. ADJ. plus or minus 10 percent
- Green POWER ON indicator lamp on the front panel
- Six position screw terminal block: +V, -V, FG, ACG, L and N, under a clear cover
- Vented enclosed case with mounting flanges at the corners
- UL, CSA (LEVEL 3) and TUV Product Service marks on the front panel
- Approximately 3.54 in x 1.38 in x 3.82 in (90.0 mm x 35.0 mm x 97.0 mm)
- Bench tested and evaluated here before listing
Applications
- A maintenance technician keeping an older Japanese-built machine running, where the original 12 volt module was an EWS and the replacement has to match the footprint and the terminal layout.
- A panel builder who needs a compact regulated 12 volt source for sensors, relays and a small I/O card, with the front panel trim available to pull the rail back up after a long wire run.
- A bench experimenter powering 12 volt logic or a test fixture who would rather bolt down a dedicated enclosed supply than tie up the lab supply for weeks.
- An access control or camera installer feeding 12 volt hardware from a mains-powered enclosure, where the wide input marking takes the voltage-select question off the table.
Frequently Asked Questions
What ratings are actually printed on this supply?
The front panel reads EWS15-12, 12V 1.4A on the DC side, and on the input side 85 to 250 V AC, 110 to 330 V DC, 47 to 63 Hz, 0.5 A. Those markings are legible in the photos and they are the ratings this listing stands behind.
Can the output voltage be adjusted?
Yes. There is a screwdriver trimmer on the front panel marked V. ADJ. with plus or minus 10 percent and an arrow toward H for higher. The trimmer is present and intact in the photos, and the adjustment range is what the panel states, not a tested measurement.
What do the six terminals do?
Reading down the block they are marked +V, -V, FG, ACG, L and N, so DC output, frame ground, AC ground and the two mains conductors all land on one strip. The clear cover that keeps fingers off the mains side is included and shown in the photos.
What is not confirmed here?
The unit was bench tested and evaluated, not characterized. Ripple, line and load regulation, hold-up time, isolation and temperature derating are not confirmed - verify against the datasheet before use, especially if this is going into a design with a tight rail budget.
Why buy this one supply instead of gambling on a surplus lot?
Because you are buying a known piece, not a probability. There is one of these, it has been photographed from every side, its markings are legible in those photos, and it was bench tested and evaluated before it went up, which is a different proposition from bidding on a box of unmarked modules and hoping one of them puts out 12 volts. At its price this supply clears our free shipping line on its own, and orders leave the Idaho warehouse the same or next business day.
Nemic-Lambda built the EWS series for cabinets where the 12 volt rail is not allowed to have opinions. This one still has its green lamp, its adjustment screw and no strong feelings, which makes it good company for whatever you need held steady next.
