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power supply

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  1. D

    DC 24V Power Supply - Please Help

    Dear all, I need to supply power to string boxes. The requirements are 12 or 24V DC Power Supply. The boxes are far away from any power source. The string boxes are connected to the inverter through RS485 cable. Do you have any idea how I could supply power to that boxes? Actually, it's the...
  2. E

    got voltage from wires to earth but still didnt get power to power supply

    i thought i had a power supply problem recently and there wasnt a neutral going into the machine so i checked everything to earth and seemed to get power into the power supply but when i tried a new one it never worked and the actual fault was a fan that was breaking a fuse, can anyone explain...
  3. the pict

    satelite tv cabinet power supply

    Hi all, A 36 bed Hotel with Sky in each room, on full occupancy what the current draw likely to be, this is all housed in a steel cabinet that is going to be in a store cupboard and plugged into a socket outlet, there is 30 13A sockets in this tin cabinet to power the digi boxes thoughts any...
  4. G

    power supply to oven and hob

    I need to put a power supply to an electric oven and an electric hob in a domestic kitchen (separate items, hob is located above the oven). I have done the calculations, and decided to run the supply in 10mm t and e. My questions are 1, can both appliances be wired through a single 45a wall...
  5. M

    Connection of a 3-transformers power supply to the 220V

    Hello everybody, I recently bought for a nice price a 24VDC Siemens power supply (4AV3202-2EB00-0A) that I intent to use to build a stabilized power supply. The PS is basically rectified and filtered and has 3 transformers. Several primary voltages are possible. I want to connect it to the...
  6. F

    Advice on power supply needed

    Hi, hope someone here may be able to help. I need a bit of help identifying if I have the correct power adaptor or not. The adaptor is for an old keyboard. The link below shows a picture which illustrates the 3 things I need to check: http://www.fizzywack.webspace.virginmedia.com/power.jpg...
  7. S

    Power Supply?- Installing 12v Dowlights (MR16) in Parallel

    Just a quick one to get a feel for what other sparks are doing when installing 12v downlights into kitchens etc (in existing properties, not newbuild). I have a customer who wants me to install their new (9x) downlights at the cheapest price (no suprise) so as this has an impact on the amount of...
  8. 10linepoet

    POWER SUPPLY UNIT TR2 for MAGNETIC DOOR RELEASE

    This is for 6 off Elmdene Power Supply Units (TR2). The input voltage is 230 VAC50 Hz The output voltage is 22VDC to 30VDC @ 2 Amps. They were bought to use with Magnetic Door Release buttons but would be suitable for many applications within the voltage range specified. These items are unused...
  9. M

    Is there UPS (uninterruptible power supply) that can supply power to mains plugs?

    Hi there- does anyone here know if there's a UPS unit that exists that can supply power to other mains plugs, not just the 'kettle' plugs for peripherals? i.e. something that can be charged and stores electricity, into which you can plug a device with a mains 3 pin sockets when in an area with...
  10. P

    Testing a computer's power supply with a multimeter

    I need to know whether or not the specifications of this multimeter (scroll down till you see the specs): http://www.drapertools.com/products/manuals/60792ins.pdf Meet these requirements: Source: BFG Power to the People Thank you.
  11. I

    power supply to shed

    hello chaps i just been to quote a job supplying electrics to shed, i suggested running 4mm swa radial via single socket outlet in the lounge, in the shed he'll be using 100watt luminare, oils filled around 800 watt heater, and a radio and speakers, my only concern was all the sockets in the...
  12. I

    power supply to summer house

    hi chaps a guy just asked me to quote for power supply to summer house in is garden 6mm swa 2x ip rated boxs switched fuse spur 2twin sockets 1 light fitting 1.5mm twin and earth 2.5mm twin an earth the parts came in at 109quid the most expensive part was the external swtich fuse spur i was goin...
  13. J

    power supply

    Hi there, new member so go easy please. I have a Yamaha keyboard and I'm thinking of doing some busking. Right, the 240v transformer I have for my keyboard has an output of 12v dc @ 1600mA. Q can I connect the keyboard directly into something such as a car battery? Only reason I'm asking is, I...

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