AN-1362: LM27961-Dual-Display White LED Driver with 3/2x Switched Capacitor Boost:  National Semiconductor Application Note   (app note added 2/06)

AN-1392:LM3485 LED Demo Board:  National Semiconductor Application Note   (app note added 2/06)

AN33 ZXSC100 Single cell DC-DC converter LED driving applications:  Zetec Semiconductors  Applications Notes ZXSC100 single cell DC-DC converter offers an ideal solution to driving white LEDs in flashlights, enabling operation from a single NiCd or NiMH cell.   (app note added 6/06)

AN-347: Shielding and Guarding:  AN-347 Analog Devices Application Note   (app note added 2/06)   How to Exclude Interference-Type Noise. What to do and Why to do it-A Rational Approach

AN529: Multiplexing LED Drive and 4x4 Keypad Sampling:  Microchip Application Note Published 26-Aug-97   (app note added 2/06)

AN590: A Clock Design using the PIC16c54 for LED Displays and Switch Inputs:  Microchip Application Note Published 26-Aug-97   (app note added 6/06)

AN-772: A Design and Manufacturing Guide for the Lead Frame Chip Scale Package:  AN-772 Analog Devices Application Note   (app note added 2/06)

AN874: Buck Configuration High-Power LED Driver:  Microchip Application Note Published 4-Jan-06   (app note added 2/06)

AN948: Efficiently Powering Nine White LEDs with the MCP1650:  Microchip Application Note Published 3-Aug-04   (app note added 2/06)

Analog LED Bar VU Meter:  built around discrete components (added 4/02)

Analyze LED characteristics with PSPICE:  01/18/01 EDN Design Ideas / (addes 08/05)  Recent advances in LED technology have lead to LEDs' widespread use in outdoor-signal applications, such as in traffic and railroad signals. A typical LED signal consists of an LED array and a power supply. When a low-voltage power supply is eir desirable or mandatory, series/parallel combinations of LEDs become inevitable. However, analyzing and optimizing series/parallel combinations of LEDs with varying forward characteristics can be complicated. Using  parametric and Monte Carlo capabilities of PSpice greatly simplifies this task.

AN-H48: Buck-Based LED Drivers using the HV9910:  Supertex Semiconductors  (app note added 2/06)

AN-H50: Constant Off-Time Buck-Based LED Drivers using HV9910:  Supertex Semiconductors  (app note added 2/06)

AN-H51: Buck/Boost-Based LED Drivers using the HV9910:  Supertex Semiconductors  (app note added 2/06)

AN-H52: HV9931 Unity Power Factor LED Driver:  Supertex Semiconductors  (app note added 2/06)

AN-H55: HV9911 Switch-Mode LED Driver IC with High Current:  Supertex Semiconductors  (app note added 2/06)

Animated LED Signboard (PIC16C84):  (electronic circuit added 4/05)

Assorted LED Circuits:  (electronic circuit added 4/05)

Astable Multivibrator 1:  (circuit added 7/02)

AT89C2051 Serial Coms to LED Driver:  (circuit / schematic design added 6/06)

AT89C2051/4051 Driving Dot Led:  (circuit added 7/02)

Audio LED VU Meter:  built around discrete components (added 4/02)

Audio Light Modulator:  Audio light modulations add to  enjoyment of music during functions organised at home or outdoors. Presented here is one such simple circuit in which light is modulated using a small fraction of  audio output from  speaker terminals of  audio amplifier. The output from  speaker terminals of audio amplifier is connected to a transformer....  (added 10/05)

Automatic Dual Output Display:  This circuit lights up ten bulbs sequentially, first in one direction and n in  opposite direction, thus presenting a nice visual effect. In this circuit, gates N1 and N2 form an oscillator. The output of this oscillator is used as a clock for BCD up/down counter CD4510 (IC2). Depending on  logic state at its pin 10,  counter counts up or down. During count up operation, pin 7 of IC2 outputs an active low pulse on reaching  ninth count. Similarly, during count-down operation, you again....   (added 10/05)

Automatic Room Lights:  An ordinary automatic room power control circuit has only one light sensor. So when a person enters  room it gets one pulse and  lights come ‘on.’ When  person goes out it gets anor pulse and  lights go ‘off.’ But what happens when two persons enter  room, one after  or? It gets two pulses and  lights remain in ‘off’ ....   (added 10/05)