Back and Forth Flasher:  for16 LEDs (added 4/02)

Basic LED Circuit Designs:  Luxeon Application Note  (app note added 2/06)

Basic LM3909 LED Flasher:  runs from1.5-Volt battery (added 3/03)

Bi-Color LED Indicates Power/Fault:  EDN 12/5/96 Single LED indicates both power on and blown-fuse conditions. (added 9/04)

Bicycle Back Safety Light:  Flashing13 LED unit,3V supply Also suitable for jogger/walkers (added 9/04)

Big 7-Segment LED Display Board with SPI Interface:  The circuit uses a serial-in-parallel out shift register, 74HC595 for receiving serial data from uController board. See example of U5 in  schematic, SER is for data input, SRCLK is shift clock and RCLK is Latch clock. Each data bit is shifted into  register on rising edge of  shift clock. When all data bits are shifted into  8-bit register,  rising edge of RCLK will clock  data to be latched at each output bit, i.e. QA QH.... (added 6/06)

Big LED Clock:  (circuit / schematic added 5/03)

Binary Coded Decimal (Bcd) Clock:  (electronic (schematic / circuit added 11/05)

Buck Configuration High-Power LED Driver:  Microchip Application Note Published 4-Jan-06   (app note added 2/06)

Buck IC Boosts Battery Voltage for White LED:  04/24/03 EDN Design Ideas  /  (added 1/05)  White-light LEDs are finding ir way into many markets that incandescent bulbs once served. Flashlights are among  newer applications in which reliability, ruggedness, and ability to control  power draw of  LEDs make se devices attractive. With incandescent bulbs,  power management for  device is a simple on-off switch....

Buck/Boost Reference Design:  This reference design presents an alternative to  typical boost power regulator. A buck converter IC is used to generate a higher voltage needed by  white light LED power from a Ni-Cd battery. This circuit operates by turning  high switch on, connecting  battery voltage across  inductor. Once sufficient energy is stored in  inductor,  ...  (added 6/06)

Buck/Boost-Based LED Drivers using the HV9910:  Supertex Semiconductors  (app note added 2/06)

Buck-Based LED Drivers using the HV9910:  Supertex Semiconductors  (app note added 2/06)

Buffer Amplifier and LED Improve PWM Power Controller's Low Load Operation:  09/15/05  EDN -Design Ideas  /  (added 11/05)   PWM IC is enhanced with discrete components for wider-range operation.