led circuit - Búsqueda para electrónicos

Here is a white LED based low cost emergency light that offers high brightness, automatic activation, automatic charging with the use of cheap components

https://circuitsector.blogspot.com/2010/05/led-based-automatic-emergency-light.html

The bi-directional sequencer uses a 4 bit binary up/down counter (CD4516) and two -1 of 8 line decoders- (74HC138 or 74HCT138) to generate the popular -Night Rider- display. A Schmitt Trigger oscillator provides the clock signal for the counter and the rate can be adjusted with the 500K pot.

http://www.hobby-circuits.com/circuits/led-and-light/light-flasher/555/16-stage-bi-directional-led-sequencer

Electronic Circuits Diagram: Cheap LED flashing circuit - Electronic Schematics collections where we discuss about electronic circuits schematics, printed circuit board diagrams and electronics projects

https://streampowers.blogspot.com/2012/10/cheap-led-flashing-circuit.html

Here is a simple circuit which can be used for decoration purposes or as an indicator. Flashing or dancing speed of LEDs can be adjusted and various dancing patterns of lights can be formed.The circuit consists of two astable multivibrators. One multivibrator is formed by transistors T1 and T2 while the other astable multivibrator is formed by T3 and T4. Duty cycle of each multivibrator can be varied by changing RC time constant. This can be done through potentiometers VR1 and VR2 to produce dif.......

https://usbmpthree.blogspot.com/2011/02/dancing-led-circuit.html

Chip on board (COB) LEDs are all the rage. These devices assemble multiple tiny LED chips onto a metal backed circuit board, then cover the assembly with a plastic cover. The metal back allows the assembly to be mounted to heat sink to keep the device cool.

http://www.discovercircuits.com/H-Corner/1W_SOLAR_COB_LED_LIGHT.htm

Portable systems often use LEDs of different colors and in varying quantities of each color. Some examples are white for the display backlight,...

http://www.edn.com/design/analog/4338629/Circuit-drives-mixed-types-and-quantities-of-LEDs

This is 5V low dropout regulator circuit using transistor and LED only so easy,lowest voltage input is 6V so across it is 1V only, make output is 5V 0.5A

https://www.eleccircuit.com/low-dropout-voltage-regulators-circuits

We have built a Volume Meter or LED VU meter circuit, with the help of MIC, OP-AMP and LM3914, which glows the LEDs as per strength of the sound, if sound is low, lesser LEDs will glow, and if sound is High more LEDs will glow.

https://circuitdigest.com/electronic-circuits/vu-meter-using-lm3914

This circuit can be used to implement christmas lights during the festive season. It is built around 4 transistors, 18 LEDs & other common components...

http://electronicsforu.com/electronics-projects/hardware-diy/led-lighting-for-christmas

led side indicator circuit for by cycle circuit diagrams. Search DIY electronic projects and circuit diagrams with descriptions. Learn electronics.

http://www.high-voltage-lab.com/search/led-side-indicator-circuit-for-by-cycle

Here's a simple problem:

http://www.electronics-diy.com/electronic_schematic.php?id=582

Here the 12 LED VU meter circuit. This is a simple visual indication of the audio level signals, adaptive to various user needs. Can be adapted to different input levels, adjustable by trimmer TR1 (state) - TR2 (Gain), then rectified by diodes D1-D2 (standard negative mark-recovery periods) and driven in the main circuit indication, consisting of the diodes D3 up to D13, transistors.......

https://skema-elektronik.blogspot.com/2011/11/12-led-vu-meter-circuit.html

Simple and cheap LED flashing circuit

http://www.coolcircuit.com

LED blink patterns with PIC 16F84

https://www.electronica-pt.com/circuitos/en/pics/83-led-flasher-pic-circuit.html

In this project, we go over how to build a blinking LED circuit.

http://www.learningaboutelectronics.com/Articles/Blinking-LED-circuit.php