/wiki/Choosing_a_Power_Supply_for_your_RepRap on this server. Your technical support key is: 36bd-e3cc-1756-6707ArmorPower On-Machine Power Supplies Our Bulletin 1607-XT ArmorPower™ On-Machine™ Power Supplies are for applications where voltage drop occurs due to line loss, and where compact size, high efficiency, and reliability are critical. Available in 50...200 W models, these IP67-rated power supplies address a trend of eliminating traditional enclosure for on-machine and factory floor installations. These power supplies are vacuum encapsulated to provide maximum resistance to shock, vibration, and humidity. DySC Voltage Sag Protectors Our Bulletin 1608 DySC® Voltage Sag Protectors protect against voltage sags and momentary outages that account for a significant amount of manufacturing downtime and damaged equipment. These DySC protectors do not require batteries, they have no moving parts, and they require minimal maintenance. They are ideal for manufacturing processes and sensitive electronics that require sag ride-through protection up to five seconds.

Our Global Control Circuit Transformers are designed to reduce supply voltages to control circuits, providing greater safety to operators. IP2X finger-safe terminal covers and fuse covers are provided on all units for added workplace safety. Our transformers isolate the control circuits from power and lighting circuits. They accommodate the momentary current inrush caused when electromagnetic components are energized, without sacrificing secondary voltage stability per NEMA ICS2-100. Switched Mode Power Supplies Bulletin 1606 switched mode power supplies includes four product families that meet most worldwide single and three-phase application requirements. These units are designed and manufactured to accept wide ranges of both AC and DC input voltages and are tested to meet global safety standards. Bulletin 1609 uninterruptible power supplies are designed specifically for industrial applications. They meet worldwide industrial and general purpose application requirements up to 10 kVA.

These units are globally certified to provide backup AC power to bridge dips, sags, or brief line power losses. AC/DC Power Supplies from Protek Power - Medical Grade Protek Power offers a diverse offering AC/DC power supplies for patient vicinity medical applications. Our customers benefit from our 20+ years of experience in power supply design and manufacturing for the critical needs of the medical industry. a/c recovery machine partsPower ratings range from 15W to 650W, with a selection of open frame, enclosed and desktop package styles. cleaning window ac air filterAll Protek AC/DC power supplies are safety agency certified to worldwide EN60601-1 standards.ac unit direct If the listed products do not suit your specific application, please contact us to discuss an alternate standard product or a custom design solution.

Internal / Open Frame AC/DC Switching Power Supplies 40 WattSingle & Multi OutputSmall 2" x 4" x 1.18" Footprint 60 WattSingle & Multi OutputSmall 2" x 4" x 1.18" Footprint 100 WattSingle OutputSmall 2" x 4" x 1.26" Footprint 3rd Edition Approved 4th Edition Pending Small 2" x 4" x 1.29" Footprint 200 WattSingle OutputCompact 3" x 5" x 1.5" Footprint 3" x 6" x 1.28" Footprint BF Rated!400 WattSingle OutputCompact 4" x 7" x 1.58" Footprint 4" x 7" x 1.68" Footprint 4" x 8" x 2.58" Footprint 1100 WattSingle OutputsBF Rated Outputs External / Desktop / Wallmount AC/DC Switching Power Supplies Interchangeable AC Input Plugs 30 Watt Class ISingle Output 60 Watt Class ISingle/Multi Output NEW!65 WattClass I/II (BF Rated) Single Output 85 Watt Single Output90 WattClass I/II(BF Rated) Single Output 90 WattClass ISingle Output C14, C18, C8 Coming Soon 105 WattClass I/IISingle Output C6, C8, C14, C18

120 WattClass I Single Output 135 WattClass ISingle OutputLevel V4th Edition Approved 150 WattClass ISingle Output 180 WattClass I/IISingle Output 220 WattClass I/II Single Output 400 WattClass I Single OutputWe're sorry, we encountered an error while processing your request.We apologize for any inconvenience. If the problem persists, please contact us. (Please include the URL of the page you were trying to access.) Browse by Cert CiscoCompTIAMicrosoftOther IT CertificationsProfessional CertificationsSOA Certified Professional (SOACP)VMwareLearning Options Store BookseBooksPractice TestsSoftwareVideoWeb Editions Sign up or log in to customize your list. Here's how it works: Anybody can ask a question The best answers are voted up and rise to the top The quick guide says that the power supply for my Raspberry Pi model should provide at least 700mA. How about the upper bound? Is it fine to use a power supply with an high output current, say higher or equal to 1A?

This is symmetric to my question: What happens if the power supply is 550 mA? Just because a power supply is rated (ie. capable of) a higher current does not mean that this is what the 'sink' (ie. This is different to voltage, where excess voltage can indeed damage a circuit that doesn't have sufficient protection (eg. voltage regulators). Think of it with a battery. Most batteries are actually capable of quite high currents (albeit with a shortened life). However, something like a flashlight/torch will only take a current according to its design - and this is typically a lot less than what the batteries are capable of. After saying all that, you should try to avoid a power supply with an extremely excessive current rating because such a set-up will prove to be inefficient in operation and uneconomic (relatively expensive to buy - although it might be one you have spare). So 1 amp is fine and probably gives a healthy margin assuming you don't have many peripherals powered from it, but 5 amps would be excessive.

There is no upper bound, but anything above 700mA is unnecessary You cannot supply current, you can only supply voltage. You provide the correct voltage and the Pi will take whatever current it needs. If your supply is incapable of supplying enough current then the voltage will drop, and if it drops too far unpredictable things will happen inside the Pi. You probably won't break it but it won't do what you expect. So long as the voltage remains fixed the Pi will not take more than it needs, whether your supply can supply up to 1 amp or a billion amps. There's no upper bound, thanks to Ohm's law: I (current) = V (potential difference) / R (resistance) Your Pi has a constant resistance (it'll vary a bit with stuff like temperature, but let's call it constant) and you're applying a constant PD (5V), so the current will remain constant regardless of the maximum the power supply is capable of. A 750mA current is sufficient to drive a Raspberry Pi. The exact amount of current to the Raspberry Pi also depends upon the count of devices you want to hook up with it.