Power Supply Circuits

  

Linear power supplies work by getting the 127 V or 220 V from the power grid and lowering it to a lower value (e.g. 12 V) using a transformer. This lower voltage is still AC. Then rectification is done by a set of diodes, transforming this AC voltage into pulsating voltage. The next step is filtering, which is done by an electrolytic capacitor, transforming this pulsating voltage into almost DC.On high-frequency switching power supplies, the input voltage has its frequency increased before going into the transformer (10-20 KHz are typical values). A power supply of good quality and with enough capacity can increase the durability of your equipment. Just to have an idea, a high-quality power supply will cost less than 5% of the PC total amount. On the other hand, a low-quality power supply can cause several intermittent problems, which are mostly difficult to be solved.Although linear power supplies work very well for several low-power applications – cordless phones and video games consoles are two applications that come in mind –, when high power is needed, linear power supplies can be literally very big for the task.

 

 

News

Improve Your Power: New Products for Generating and Monitoring Your Supply Voltages

All About Circuits Improve Your Power: New Products for Generating and Monitoring Your Supply Voltages All About Circuits The power supply circuit is perhaps not the most interesting or exotic portion of a modern...

Feb 10, 2017

A step-by-step guide to power supply sequencing and supervision, Part 1

A step-by-step guide to power supply sequencing and supervision, Part 1 EDN.com A power supply sequencer and supervisor circuit requires a number of features to make it ideal for power supply management. It must...

Feb 5, 2017

MIT researchers built an energy-sipping power converter

TechCrunch MIT researchers built an energy-sipping power converter - Engadget Engadget Researchers from MIT's Microsystems Technologies Laboratories have built a new power supply system designed specifically for...

Feb 22, 2017

Best surge protector | TechHive

TechHive Best surge protector | TechHive TechHive Far better than ordinary power strips, these products will protect your expensive electronics from dangerous power spikes. We'll help you pick the right one...

Feb 23, 2017

Rohde & Schwarz introduces a probe with very large offset range

New Electronics Rohde & Schwarz introduces a probe with very large offset range New Electronics The RT-ZPR20 is an extremely low-noise power rail probe with a bandwidth of 2 GHz. Developed by Rohde & Schwarz...

Jan 30, 2017

Computer Science and Engineering student receives ASP-DAC 2017 best paper award

Penn State News Computer Science and Engineering student receives ASP-DAC 2017 best paper award Penn State News “Nonvolatile processors try to continually run their programs under unstable power supply through...

Feb 22, 2017

Pioneering chip extends sensors' battery life -- ScienceDaily

Science Daily Pioneering chip extends sensors' battery life -- ScienceDaily Science Daily A low-cost chip that enables batteries in sensors to last longer, in some cases by over ten times, has been developed by...

Feb 8, 2017

Rohde Schwarz Introduces A Probe With Both A Large Offset Range ...

RF Globalnet (press release) Rohde Schwarz Introduces A Probe With Both A Large Offset Range ... RF Globalnet (press release) The R&S RT-ZPR20 is a new, extremely low-noise power rail probe with a bandwidth of 2...

Jan 31, 2017

Printed Electronics World by IDTechEx

Printed Electronics World Printed Electronics World by IDTechEx Printed Electronics World Developing a low-cost, efficient method of increasing the attractiveness of OLEDs for lighting poses a significant challenge....

Feb 24, 2017

MIT Researchers launch Power Converter to reduce Energy Consumption

MIT Researchers launch Power Converter to reduce Energy Consumption Industry Leaders Magazine Researchers from the Microsystems Technologies Laboratory of MIT are building this new power supply system to specifically...

Feb 22, 2017

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