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2012-05-17 Integrated secondary side bias regulator for isolated DCDC converters
Understand how an isolated bias supply is implemented in the evaluation board with LM34927 constant on-time regulator.
2012-05-16 Understanding LM5017 evaluation board
Learn about LM5017 evaluation board, which provides the design engineer with a fully functional buck regulator, employing the constant on-time operating principle.
2012-04-24 Linear debuts 100V constant-current, constant-voltage controller
Linear debuts 100V constant-current, constant-voltage controller
2011-12-08 Buck converters deliver 300mA constant current
Buck converters deliver 300mA constant current
2011-12-07 LED drivers ICs offer programmable current o/p
Allegro MicroSystems' automotive-grade, high-current LED drivers offer a programmable constant current output for driving high power LEDs in series.
2011-10-18 Regulator offers flexible current limit of 5A
Linear's LTM8052 is a 36V input constant frequency step-down µModule regulator with an adjustable output current limit of up to 5A.
2011-10-17 Waterproof LED drivers tout 90% efficiency
XP Power releases the DLG series of constant voltage and constant current LED drivers that are waterproof to a depth of one metre and tout up to 90 per cent power efficiency.
2011-09-08 Content access demands push NAS growth
In-Stat predicts a 36 per cent growth in centralised networked-attached storage until 2015 driven by the constant need for content access due to the flood of portable CE and computing devices in homes.
2011-09-01 Carbon nanotubes unreliable?
The reliability of carbon nanotubes has come under examination after tests by NIST researchers reveal slow performance degradation under constant current.
2011-08-08 Designing constant-on-time buck regulators for low drop-out voltage
Designing constant-on-time buck regulators for low drop-out voltage
2011-08-04 Implementing accurate current limit with LM25085
Read about an external op-amp based accurate current limit circuit to be used for CC/CV operation when the required constant current range is quite narrow.
2011-05-24 3W, 6W LED drivers feature compact design
Recom Electronic debuts two low-cost AC/DC LED drivers with a constant current supply of 3W and 6W in ultra-compact design.
2011-04-25 Powering LED-backlit LCDs using DC-DC topology (Part 2)
Know the approaches and trade-offs in supply topologies and configurations when powering LED arrays.
2011-03-30 LM5006 evaluation board
The LM5006EVAL evaluation board provides the design engineer with a fully functional buck regulator, employing the constant on-time operating principle.
2011-03-24 DC/DC converter drives 3 independent 100mA LED strings
Linear Technology's LT3597 DC/DC converter operates as a three channel, constant current LED driver driving up to three strings of LEDs, each with up to ten 100mA LEDs in series, from a 48V input.
2011-03-08 Optocoupler-less LED driver meets UL compliance
Supertex rolls out the HV9971, a patented, isolated, constant current LED driver which maintains current accuracy while insensitive to external component tolerances and does not require an optocoupler.
2011-02-28 Scalable COT POL regulators maximise battery life
International Rectifier's SupIRBuck IR347x and IR386x devices feature hysteretic constant on-time (COT) modulators with adaptive dead-time control for light load and full load efficiency.
2011-02-22 Four-channel group delay eases LED display design
Texas Instruments' TLC59282 low-noise 16-channel constant-current sink LED driver improves display data integrity on inexpensive PCBs.
2011-02-01 Level shifter helps to parallel LED current drivers
Here's a discussion on a circuit that lets you parallel LED-driver circuits as required to achieve the desired drive current.
2011-01-26 Efficient, inexpensive constant-power driver
Efficient, inexpensive constant-power driver
2011-01-13 Boost LED driver efficiency with supply-chopped dimming control
Read about a driver reference design drives a 700mA constant current to a single string of LEDs with forward voltages up to 60V.
2011-01-13 Locked-sync sine generator covers three decades with low distortion
Learn about a circuit that synchronizes a sinewave output through three decades of frequency (20Hz to 20kHz) while maintaining low THD and constant amplitude.
2010-12-30 A19 LEDs ref design enables 350mA output
Power Integrations debuts the RDK-251 reference design that offers a single constant-current output of 350mA at a nominal LED string voltage of 15V.
2010-12-21 Buck-boost converter maintains low noise output
Linear debuts a buck-boost converter that provides a continuous transition through all operating modes, maintaining a constant, low noise output voltage even as the input voltage declines below the output.
2010-12-10 Understanding discrete LED driver
Read about a 300 mA discrete LED driver, based on a buck-converter principle with an efficiency of 80 to 90%.
2010-11-19 Constant current LED drivers extends over 12W to 20W
Constant current LED drivers extends over 12W to 20W
2010-11-15 2.5A optocoupler tailored for hybrid, electric vehicles
Avago's unveils the ACPL-38JT which incorporates a complete IGBT driver for signal switching, along with de-saturation detection and fault status feedback systems for constant signal protection.
2010-09-14 Test services necessary for wireless networks
The demand for test services in the wireless network market has outstripped that of the wireline sector due to the constant stream of new technologies and problems.
2010-09-13 Digital constant-current controller for LED applications based on STM8S208X
Digital constant-current controller for LED applications based on STM8S208X
2010-07-30 How to apply additional PWM intensity control to LED drivers
This application note discusses how additional PWM intensity control can be applied to constant-current LED drivers by using a switched-LED power supply.
Max's Cool Beans

Clive Maxfield Strange modes of transport and other "stuff"

Someone just pointed me at a YouTube video that claims to show the world's first e-powered multicopter flight...

 

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