Schematics
Power Amplifier
Preamplifier
Audio mixer
Audio Equalizer
DC Protection
Headphone Amplifier
Vu Meter
Tube amplifier
Loudspeakers Active crossover
Audio Filter
Audio misc
Auto - car
FM transmitter
LED
Alarm
Power Supply
Motor control
Robot
Timer generator oscilator
Computer
Microcontroller programmer PIC AT
Digital
Light controller
Laser
RF transmitter receiver
IR infrared
Medicine
Meter Tester
Video
Switch control
Solar
RC modeling
Musical instruments
Miscellaneous
Game
Data acquisition
Telephone
AC Powered White LED Strings
Animated LED circuits
10” LED Backlight from a Single Cell Battery
13 Color LED Rainbow
2 Transistor LED Flasher
9V LED flasher
36-led flashlight with switching power supply
555 LED flasher
3V LED flasher
AC Line powered LED
AC Line powered LEDs
AC-Powered LED
Bicycle safety lights
Big 7-Seg LEDThe circuit uses a serial-in-parallel out shift register, 74HC595 for receiving serial data from uController board
Build your own simple 9-LED Flashlight- the basics
Constant Current Buck Regulator for High Power LED Drivers
Constant Current LED Driver
Crossing light flashers
Dual Gate Inverter Oscillator Increases the Brightness of LEDs While Reducing Power Consumption
Flasher
Flashing LED advertising badge
Fun with LEDs LED Chasers
Highly Efficient 0-100% LED Dimmer
High Efficiency 12V White LED Driver
High-Power LED Driver Accepts Wide Input-Voltage Range
LED-BASED MESSAGE DISPLAY
LED circuits
LED Constant Current Source Scheme
LED flasher
LED flasher circuits
LED dimmer
LED dimmer circuits
LED dimmer uses only two lines
LED driver for low voltage halogen replacement
LED Drivers for Display Backlighting and Other Portable Applications
LED flashlight
LED lamp dimmer
LED Lighting
LED Lighting Semiconductors
LED-matrix oscilloscope
LeD MaTRiX
LED modifications
LED Mood Light
LED power supply
LED stroboscope
Low battery voltage flasher
Low power LED Flasher
Simplest LED Flasher circuits
Single and Two Cell White LED Drivers Without Inductors
Solar Powered Night Light
SPI Interface Big 7-Seg LED
Three-Color Display using Bicolor LEDs
ULTRA-BRIGHT LED LAMP
White LED driver circuits
White Led Flashlight - Modified Solar Flashlight
White LED Flashlight Schematic
White LED voltage converter
1.5V LED flasher
120 VAC LINE POWERED WHITE LEDs NOTE! USE 0.22uF @400V FOR 240 VAC POWER LINES
