Circuits & Schematics Light - 9

Michael Page EDN The circuit in Figure 1 is not complex, but it saved the day in an application involving visual inspection of the spray pattern of fuel injectors for quality and consistency. In this application, xenon strobe lights did not work ...

Boris Landoni open-electronics.org Part 1 - Specification and Schematic Operation The receiver provides for the control of the two channels by a 433 MHz remote control with MM53200 / Holtek HT12 encoding or a compatible one. Each channel is ...

Boris Landoni, open-electronics.org Since when white light emitting high brightness LED are available, the handover from traditional lighting bulbs to the solid-state lighting has become irreversible: LEDs have an efficiency (expressed in ...

By Shawn Rhen Digi-Key The advancements in high powered LEDs have brought them to the attention of the lighting industry, positioning them as replacements for the current incandescent and fluorescent technologies. Although widespread adoption has ...

Yan-Niu Ren, Southwest Petroleum University, Chengdu, China EDN A constant current is better than a constant voltage for driving LEDs. In this proposed circuit, a common constant-voltage regulator is changed into a constant-current source for LEDs. ...

James Campbell Electronic Design This relatively simple circuit uses a 6-V DC supply with a PWM current-source configuration to provide efficient, adjustable dimming of a white LED over a wide range, needed to accommodate the unique lighting needs ...

Hua (Walker) Bai, Linear Technology Design Note 508 Introduction The meaning of the term high power LED is rapidly evolving. Although a 350 mA LED could easily earn the stamp of high power a few years ago, it could not hold a candle to the 20 A LED ...

Application Note AN-1188 August 2013 Akos Hodany The IRuFB1 40 W Isolated Flyback PFC design is presented in this document. This power supply circuit provides power factor correction (PFC), output voltage regulation and full protection against ...

This project is pretty cool for a few reasons, and driving a huge LED matrix with a single 8-bit controller is just one of them. The idea was born when I bought 120 LEDs of the wrong type, and decided to do something with them. With that many LEDs, ...

Subodh Johri and Prateek Johri, India EDN The H-bridge is a classic circuit used for driving dc motors in a user-defined manner, such as in forward/reverse direction or PWM-assisted controlled RPM with the help of four discrete/integrated switches ...