LED Circuits: LED's Circuits - Light Emitting Diode Circuits

An LED circuit that alternately flashes two LED's on and off. Perfect for a hazard or warning sign. When one LED is on the other is off.

Circuit diagram for an ultra low-noise driver/supply circuit for white LEDs, using the IC LTC3201. Ensures a stable brightness in white LED driven items.

A circuit with 8 LEDs that flash in a somewhat random fashion (well it's not actually at random, but it does visually appear that way).

Versatile light organ based on PIC microcontroller.

The circuit flashes five LED's in sequence repeatedly until you turn it off. Flash rate is user adjustable. The circuit uses an IC chip on Board which you will then mount on the included mother board; battery holder is included. Powered by a 3 volt supply

Flashes five very bright LED's in any one of seven, user-selectable, patterns. A COB (chip-on-board) IC makes assembly very easy; the chip is supplied premounted on its own board and a motherboard contains the entire circuit. Operates on 3 volts DC, batte

Schematic for an electronic audio level VU meter that uses LED's to display the volume/audio levels.

The Traffic Lights circuit performs actions just like those of a real traffic light system, switching between red, amber & green.