When an off-the-shelf power supply won’t do the job, let Sager Power Systems design a solution to fit your needs. At Sager Power Systems, we specialize in customizing standard power products for medical, industrial, test and instrumentation applications, and more. Our in-house team of electrical, mechanical, and thermal engineers provide a range of value-added services to ensure you get the power supply type and functionality you need for your application – all with faster time to market and higher reliability than a typical custom build. Excelsys Delivers Revolutionary New Fanless Modular Power Supply An incredible 600W with natural convection cooling only. Protek Power PUB200-400 Series 200 to 400 Watts Convection Cooled for High Reliability Applications SL Power TE40 Power Supply For Test & Measurement, Industrial Devices In stock at Sager and ideal for portable equipment, the Level VI+ TE40 Series helps solve EMC/EMI challenges Artesyn Wall Mount USB

New Artesyn Wall Mount USB External Power Adapter Families Meet Latest Energy-Efficiency Regulations and add 62368-1 Safety Approvals Most Compact 5 Watt DC/DC Converter from TRACO Power TDN 5WI DC/DC converters come achieve a 50% higher power density compared to conventional 5 Watt converters. They provide 1500VDC I/O-Isolation, 4:1 input, external On/Off and short current protection. SL Power ME Series External Power Supplies Sager Power Systems announces the SL Power family of medical-grade external power supplies, the ME60 Series. GE Critical Power CLP Open Frame Power Supplies GE Critical Power CLP Open Frame Power Supplies for embedded applications. Sager Power Systems to Exhibit at Medical Design & Manufacturing Expo in Minneapolis Visit Sager Power Systems at MD&M in Booth 1348 at the Minneapolis Convention Center in Minnesota on September 21-22, 2016. Local Donation Brings Robotics to MHS Sager Electronics Sponsorship helps bring robotics to Middleborough High School

Sager Power Systems in MTC Industry Newsletter Sager Power Systems was a feature article in the industry’s go-to-news source for the power supply market! Editorial by Mohan Mankikar, MTC’s Power Electronics Industry News Sager Ramps Up for a Power-Hungry Market After 128 years in business, Sager Electronics can still mark some “firsts” in its history. Sager Power Systems, a specialized group within Sager Electronics, is one of those. Editorial by Barbara Jorgensen, Electronics Purchasing Strategies.The paper proposed an application of intelligent AC-DC integrated power supply system in 500kV switching station. Firstly, this paper introduced current situation of AC-DC power supply system which is for home use and provided main components of this intelligent power supply system and its functions. And then, all cautions in operation and maintenance process is explained. Lastly, this paper summarized problems exposed in the system after running half year in 500kV switching station and put forward some aspects needed to be improved.

Advanced Materials Research (Volumes 614-615) Advances in Power and Electrical Engineering In order to see related information, you need to Login. Based on the Combined Rule Power Alarm Information Intelligent Analysis Algorithm Research on Integrated Management Method for Intelligent Community Design of Intelligent Terminal Based on ARM and FPGA Study on the Key Technology of Intelligent TransformerThis bugged me a lot when I was studying Electrical Engineering and took a lot of time to clear up this doubt.how to repair ac window unitFirst a little bit of History. window ac units sizingInitially Power Distribution happened through DC. best central ac units for 2013It was not until 1950's when people started converting to AC.

In India, I am one of the few rare ones to have seen and used DC supplies in early 1980 at Howrah, WB.Lets look at what we want as features from the power supply:Low / Negligible drop over long distancesNon-LethalEfficient Power transfer i.e. Low power wastageAbility to connect Sources and Sinks arbitrarilyAbility to Step-up or Step-down as per requirement with simple equipmentLets see how DC fares:Very high voltage drop over distances. Needs Power Supply sources at regular intervals to maintain Voltage.Extremely LETHAL! You might get permanent muscle contraction/expansion injuries as our body works on milli-volts of DC , whereas supplies are typically 100's of volts.Power wastage is pretty high owing to being associated with the voltage drop. for Example, if a 10MW, 200V DC plant see's a 10% voltage drop the power wasted is also 10% [ 1MW ] based on a simplistic model. In reality it is much greater.You cannot connect sources arbitrarily. There is always a chance of equipment being damaged due to voltage difference.

You have to put in a current limiting resistance which causes associated power loss and voltage drop.DC-DC converters are typically electronic and did not come along the time when DC supplies were used. So there was NO way to convert voltage levels. And now for AC:Voltage Drop [ or even rise !! ] is a function of source and load and transmission line impedences. It requires a pretty complex Network Simulation to figure out these drops. Further these drops are not static, they are dynamic that i.e they change every instant. This makes AC capital expensive , as expensive are required to control the plant and distribution centers.Lethality is a function of Volatge. At 110V, 60Hz [ US ] or 220V,50Hz [ INDIA ] the voltages will cause a tingle but no permanent damage or death.Power is wasted on the resistive elements of the transmission lines, not due to the capacitive and inductive effects. Thus unless there are faults , power wastage can be controlled greatly.Sources and Sinks can be connected arbitrarily as long they are in-phase.

There is a particular mechanism to sync a Source to a Live line and connect it as a source.  Page on iitkgp.ernet.in With the help of Transformers, Voltage can be stepped-up or down pretty easily as per requirement.Thus , AC scores better than DC almost on all aspects. The next question is what waveform of AC is better , i.e. Why a Sinusoidal wave ?Written Because we found a way to change the AC voltage levels from one to another before knowing how to do the same with the DC (i.e: the invention of the transformers ) and I can arguably say, if the nowadays technology of the power electronics and high power semiconductor devices had been reached in the late of 19th century, the DC would dominate over the AC.Back to 1882, the first commercial distribution was DC, it was commissioned by Edison, a 24 km long cable at 110V to light Pearl Street Station. Transmitting power over a long distance at such a low voltage would inevitably lead to unacceptable losses. In 1885, the voltage transformers were invented, allowing stepping up the AC voltage before transmission (i.e, current is reduced and the losses can be highly reduced) and stepping it down to a voltage level appropriate to the distribution level.

Thus, Edison lost the war of current against Westinghouse who was backed by Nicola Tesla.Nowadays, the renewable energy sources like photovoltaics and wind turbines produce DC and in the same time most of our loads are battery based systems such as: electric vehicles, phones, laptops, .. Other loads like LED lighting systems, TV, .. It makes no sense to convert DC to AC and transmit it (for a very short distance in many cases) then convert it back to DC.Quitting the dependence -only- on AC in our homes is just a matter of time and, I claim that DC is coming back, .. Written Thanks for A2A.At the moment you have no choice but to go with the crowd and use AC as even if you generate your own DC supply (or AC having wave shape other than sinusoidal) you will find it difficult to get common electrical equipment which can be directly connected without modifications. Many answers given takes one through the historical developments that happened around 140 years ago. How when it was needed to increase the DC voltage to transmit power over even few miles was not possible because DC generators could not generate more than 400 V-500 V because of commutation problem.