Power Supply
Power Supply
The DC Power Supply is a rather fundamental electronic device, however there are hundreds of DC Power Supply products on the market from dozen of manufacturers. Narrowing down the best product for your application and budget can be a daunting task. This article addresses DC Power Supply differentiators, functions and the applications they are best suited for. The article’s focus is DC Power Supplies used by engineers, manufacturers, quality professionals and electronic hobbyists for the purposes of R&D, manufacturing and testing.
Power Supplies can range in price from $50 to $20,000 and the cost is often directly proportional to the amount of power the device outputs. The primary function of a power supply is to regulate output voltage and current. It takes an input power and regulates the output power as to enforce a constant voltage and current. In the case of DC Power Supplies, the input power is converted from alternating current (AC) to direct current (DC). There are two basic types of regulated DC Power Supplies: Linear and Switching.
Linear power supplies can never output a higher voltage than the input source. In theory, a linear power supply that is driven by typical 110V wall outlet could only output 110V, assuming the device were 100% efficient. Realistically, no power supply is 100% efficient because power conversion always results in energy loss, usually in the form of heat dissipation. Therefore, linear power supplies usually output voltage that is significantly less than the input.
Switching power supplies can step-up, step-down or invert the input voltage. Switching power supplies are usually larger, noisier and more expensive than their linear counterparts, however, switching power supplies are typically more efficient.
Choosing the right DC power supply for your application requires definition of some basic design specifications: voltage range, current range, number of outputs, power cleanliness (known as “ripple”) and programmability. In general, the higher the output voltage and the lower the ripple, the more expensive the DC Power Supply. Multiple outputs and programmability features will also add to the cost.
The least expensive DC Power Supplies are ideal for electronics hobbyists and basic electro-mechanical applications where only raw power is required. It is likely that the devices being powered in these applications already have power-conditioning features that eliminate the need for precision input power. Low power, single output, DC power supplies range in price from $50 to $200.
Mid-range power supplies are best suited for non-critical, laboratory projects involving more advanced electro-mechanical applications or basic board-level testing. Mid-range power supplies might have multiple outputs, higher power ratings, lower ripple and precision, digital metering (+/- .001V, +/- .01A). Mid-range DC power supplies can be linear or switching and could range in price from $200 to $1,000.
High-end applications requiring high output voltage, advanced programmability (GPIB PC Interfaces), numerous outputs and very low ripple should budget in excess of $1,000 for their DC power supply. Many laboratory, R&D and testing applications could easily spend $5,000 to $10,000 per power supply.
This article has introduced some basic features and applications of DC Power Supplies. Before making your final purchase, be sure to consult the manufacturer and thoroughly understand all the specifications of a particular product. Choosing the best and most economical DC Power Supply for your application does not have to be a complex and time-consuming task. By identifying your design parameters, you will quickly narrow down product selection to a niche class of products from only a few manufacturers.
About the Author:
Robert Preville is the President and CEO of Global Test Supply, LLC, a distributor of test and measurement equipment, and welcomes question from those looking for a DC Power Supply
Article Source: ArticlesBase.com – Choosing the Right Dc Power Supply for Your Application
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SKS-350-12 Power supply unit 350W output DC 12V 29A $44.00 |
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SKS-145-12 Power supply unit 145W 12V 12A $40.00 |
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Adjustable +Voltage Power Supply Kit (#1725) $6.50 |
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HOMEMADE SWITCHED & FUSED POWER SUPPLY FOR NATIONAL HRO $24.00 |
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VINTAGE ASTRON RS-7A HAM RADIO POWER SUPPLY BOX $2.00 |
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MICRONTA REGULATED 12 VOLT POWER SUPPLY $5.00 |
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MICRONTA REGULATED 12 VOLT POWER SUPPLY $9.99 |
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ESTATE KENWOOD PS-50 POWER SUPPLY IN BOX-LOOKS GREAT- $200.00 |
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ESTATE YAESU POWER SUPPLY FP-1030A WITH METERS $200.00 |
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Multi Elmac AF-67 HF Transmitter With A/C Power Supply $19.95 |
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12 volt power supply 2 amps / battery elim CB HAM RADIO $5.00 |
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YAESU FP1023 FP-1023 SWITCHING POWER SUPPLY $59.95 |
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Sony ICF-2010 Power Supply $30.00 |
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Pyramid Regulated Power Supply $50.00 |
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PYRAMID PS-52KX 45 AMP CB/HAM RADIO CELL POWER SUPPLY $175.00 |
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Power Supply 35-Amp Adjustable Voltage Pyramid #PS36KX $139.72 |
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Kenwood KPS 15 Power Supply No Reserve! $50.00 |
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VARMINT SWR METER AND POWER SUPPLY $10.00 |
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NEW PYLE 35 40 AMP 12V HAM CAR SHOP POWER SUPPLY 750W $149.99 |
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PYRAMID PS15KX 10 Amp Power Supply w/Cigarette Lighter $57.95 |
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PYRAMID 5 Amp Car Power Supply Cell Phone/CB/Ham PS9KX $36.49 |
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YAEU NC-8A CHARGER/POWER SUPPLY (NOS) $69.99 |
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SWAN 500C SSB CW TUBE TRANSCEIVER & 117B POWER SUPPLY $274.99 |
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Swan 230xc Power Supply $9.99 |
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ASTRON 35-M 25 Amp Power Supply $70.00 |
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33 Amp 12 Volt 13.8V Regulated Radio Power Supply 12V $57.00 |
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36 Amp 12 Volt 13.8V Regulated Radio Power Supply 12V $65.00 |
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Motorola Power Supply 2580955Z02 12VDC Radius GP300 $4.95 |
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(W2IHY EQ +),POWER SUPPLY,MANUALS,ORG BOX &PACKING NICE $249.99 |
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Astron SLS-15 28 volt 15 amp switching power supply $20.00 |
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Astron SLS-15 28 volt 15 amp switching power supply $20.00 |
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PYRAMID PS52KX 46 52 AMP 12V DC 1000 WATTS POWER SUPPLY $178.95 |
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VINTAGE MALLORY POWER SUPPLY MODEL 6RS 10, 50′S WORKS ! $49.00 |
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12V 6A Switching Power Supply 16 Output For CCTV DVR $9.92 |
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astron power supply RS 20A $75.00 |
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Motorola Power Supply HPN1007A 13.6 VDC 10 AMP $19.99 |
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New Pyle 3AMP Regulated Power Supply 3/4 Amp AC/DC 13vt $39.90 |
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NEW PYLE 35 40 AMP 12V HAM CAR SHOP POWER SUPPLY 750W $135.00 |
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Kenwood TS-2000 DSP Transceiver + Power Supply $900.00 |
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CB/Ham Radio Power Supply 13.65V/10 Ma $25.00 |
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Astron RS-70M Power Supply $219.99 |
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Used ICOM IC-730 with PS-15 Power Supply $295.00 |
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* NEW 8 AND 11 PIN CONNECTORS FOR HEATHKIT POWER SUPPLY $20.00 |
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* BRAND NEW 11 PIN CABLE FOR HEATHKIT POWER SUPPLIES $32.00 |
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* BRAND NEW 11 PIN CONNECTORS FOR HEATHKIT POWER SUPPLY $20.00 |
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* BRAND NEW 11 PIN CONNECTORS FOR HEATHKIT POWER SUPPLY $20.00 |
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* BRAND NEW 11 PIN CONNECTORS FOR HEATHKIT POWER SUPPLY $20.00 |
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* BRAND NEW 11 PIN CABLE FOR HEATHKIT POWER SUPPLIES $32.00 |
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* BRAND NEW 11 PIN CABLE FOR HEATHKIT POWER SUPPLIES $32.00 |
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* BRAND NEW 8 & 11 PIN CABLE FOR HEATHKIT POWER SUPPLY $32.00 |
A lot higher or lower than the optimum volts can blow a circuit, mess up data and cause physical damage to a hard disk. In fact, because of sustained reduction in voltage levels (brownouts), surges, spikes, over voltage and even line noise created by electrical devices can fail your computer immediately and any data in your computer that had not been previously stored on a disk vanished. To save your computer and hard disk from any unusual accident, standby power supply and uninterruptible power supply systems are increasingly being looked at as essential assurance against power failures.
Instead of a system crash, standby power supply systems have an automatic power supply source for a few minutes to hours that allows users to shut down your system in an orderly way. Such systems are designed to detect a sudden loss of or drop in power and to switch, in a matter of seconds, to a battery backup that can maintain power for a few minutes that allows time for users to store their materials, complete a data transfer and exit the system properly.
Standby power supply system includes a battery to maintain power in case of fluctuations. This system keeps your personal computer as well as many other electrical devices running for several minutes. This type of power supply systems are believed to be ultra quite and without a glitch keep the power supply continue during power outages.
However, the authentic back up time depends on wattage demand provided by this system. Apart from it, standby power supply systems also act a surges protector amid electronic appliances and grid power. Added benefit of such system is that it is capable to collect power from other sources including, power generators, wind turbines and solar arrays. When it comes to get such types of systems, you can get them easily from any online store.
There are also a number of standby systems that monitor the quality of the electrical power leading into the computer and robotically alter the voltage to maintain a stable supply. A standby power supply system is sufficient for individual PCs, especially if you are in the habit of saving files frequently and backing up the hard disk. Put simply, such power supply system has a better potential importance where the power supply is above all susceptible to fluctuations.
About the Author:
Riello-ups.co.uk is the best place for complete range of power solutions, UPS accessories and Standby Power Supply systems. Here you can find an innovative solutions for Power Protection when power supply is failed automatically.
Article Source: ArticlesBase.com – Standby Power Supply: Essential Assurance Against Power Failures