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Adjustable DC Power Supply 3-24 V 3 A
30-day returns
A part breaks in the first year? We send a new one free
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- Free tracked shipping
- Secure payment
- 30-day returns
Description
Most small bench things want a voltage that is not the one your drawer of wall warts happens to contain. This is one supply with a knob instead of nine adapters with the wrong plugs.

Wall power in at 100 to 240 V, adjustable DC out from 3 to 24 V, up to 3 A - rated at 72 W, which is what 24 V and 3 A comes to. US or AU plug, your pick. The output is a standard round 5.5 x 2.1 mm DC plug on a lead of about 85 cm. If what you are powering has a different socket or bare wires, you will need an adapter - none comes in the box.

Why current headroom matters more than volts
People buy supplies by voltage and then get bitten by current. A motor pulls far more current starting than running, and a supply at its limit sags - the voltage drops, the motor slows exactly when you need it not to, and it feels like the tool is weak. Three amps of headroom is the difference between a supply that holds its voltage under load and one that gives up.
That is also why this is a knob and not a switch: you can bring a new circuit up from 3 V and watch what it does, instead of connecting 12 V and finding out all at once. Turn the knob all the way back and it clicks off.
A red readout next to the knob shows the voltage you have set. Overload, overvoltage, overcurrent and short-circuit protection are built in. It runs small motors, LED strip, test circuits and soldering aids.

Which plug to pick
US plug for the United States, AU plug for Australia and New Zealand. Same supply either way - only the pins differ, and both run on 100 to 240 V, so no transformer is needed.
Using it with the drill press
Do not run the Mikrabench drill press above 12 volts. Its own adapter is marked 3 to 12 V and that is what the motor is rated for. Set 12 and leave it.
Delivery
Free and tracked, to the United States, Australia, New Zealand and Canada alike. One to three weeks.
30-day returns from the day it arrives. Return postage is yours, the price of the item comes back in full.
Shipping and returns
Free tracked shipping on every order to the United States, Australia, New Zealand and Canada, with no minimum. A few items ship to a shorter list of countries, and their page says so.
Orders leave within 2 business days. The delivery time for your country is shown under the price of each item. In the United States the Mini Drill Press, the lathes, the XYZ and XYZR micrometer stages and many of the tools ship from US warehouses and arrive in about a week or less. Items shipped from overseas take one to two weeks, a few larger ones two to four. You get a tracking number by email as soon as the parcel is scanned.
30-day returns from the day it arrives, unused and in its packaging. If it arrived damaged or faulty, we pay the return label. If you simply changed your mind, you pay the return postage and get the full price of the item back. Email support@arvonelle.com before sending anything back.
Before you order
Do I pay tax or duty? In the United States, sales tax is added at checkout where your state charges it, and the total you see is what you pay. For Australia and New Zealand nothing is added at checkout. If a carrier ever asks you for a fee on one of our parcels, don't pay it: email us first and we sort it out.
What if a part breaks? For twelve months, tell us which part and we post a new one free. No return needed.
Can I cancel? Yes, within 24 hours of ordering, no questions asked.
How do I reach you? Write to support@arvonelle.com or use the chat. A real person answers within one business day.
