AC LED module does away with electrolytic capacitors, ballast
February 09, 2012 // Christoph Hammerschmidt
Seoul Semiconductor has launched an LED module based on its AC-powered Acrich2 LED series. Through its innovative architecture, the module can fully apply the LED benefits - much better than conventional DC powered LED modules.
Since it can be powered directly off the mains AC power supply, the module does not require an AC/DC converter and thus no electrolytic capacitor. These capacitors, however, are characterized by a much shorter lifetime than all other components in are the limiting factor for the service lifetime of LED lighting. In addition, the converters are affected by losses and thus reduce the overall efficiency.
The Acrich2 modules also get by without the ballast associated with CFL lamps. While luminary manufacturers typically prefer solutions for CFL solutions that are compatible with the existing circuitry (i.e. ballast), this circuitry significantly reduces the efficiency. Thus, the rod-shaped AC-powered LED modules promise a long lifetime and better efficiency - manufacturer Seoul Semiconductor promises twice the lifetime of solutions involving an AC/DC converter, a power factor of 97 percent and an overall energy efficiency of 90 percent.
"Because of this optimized and simplified system design, the Acrich2 module is far superior to CFL lamps and DC-powered fluorescing LED luminaires", says Seoul Semi managing director Manuel Zarauza. Users benefit from longer lifetime and lower energy consumption and at the same time help to reduce CO2 emissions, he added.
16nm FinFETs boost ARM's 64-bit big.LITTLE
September 30, 2014
TSMC and ARM today have announced the results from a key FinFET silicon validation of the ARM big.LITTLE implementation, ...
X-ray imaging reveals path to extending battery lifetimes
Electron innovation prolongs power in mobile devices
What Is Digital Power System Management?
Qualcomm increases share of smartphone processor market
Aggregating disparate data protocols from IoT
September 29, 2014
News stories about the Internet of Things tend to concentrate on consumer products like wearable tech and smart home appliances. ...
Fairchild reinvents itself
Wearable equipment market to double in 2014
ST claims 5 billion MEMS sensors shipped
- Solutions for Millimeter Wave Wireless Backhaul
- Enter Linduino
- A Novel Approach to Industrial Rectifier Systems
- Putting FPGAs to Work in Software Radio Systems Handbook
InterviewCEO interview: AMS' Laney on driving a sensor-driven business
Kirk Laney, CEO of Austrian mixed-signal chip and sensor company AMS, wants to leverage the opportunity that technology affords to create new markets for sensors and sensor interfaces.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Trinamic Motion Control is offering you to win one of four TMCM-1043 development kits for its highly integrated, NEMA 17-compatible TMCM-1043 stepDancer stepper motor module.
Offering designers an easy-to-use PC-based GUI that allows one-click modification of motor drive current, micro-stepping and other key parameters, the intuitive kits are custom designed and developed for...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.