Hobby Projects - Insulation tester, LED Circuits, Meters.
Showing posts with label LED-Lighting. Show all posts
Showing posts with label LED-Lighting. Show all posts

Sunday, April 03, 2016

LED Dimming Lamp

Build it or go for a kit, this is a nice design for a Table or Desktop lamp. You will need to fix in a Enclosure with a Diffused Plastic or Glass Filter Front.

18 LED dimmable LED lamp

LED Dimming Lamp

This circuit is a dimmable white LED lamp array with 18 LEDs. The lamp brightness is regulated as long as the input voltage is above 10.5V. A low-dropout analog voltage regulator is used for a simple and relatively efficient design. The lamp produces enough light to use as a a reading lamp or a small work lamp

Wednesday, October 17, 2012

ThingM and BlinkM - Intelligent LED Lighting

Design and manufacture ubiquitous computing products that combine user experience design expertise with a deep knowledge of cutting-edge technologies. Here, networked electronics meet user experience design in products for everyday problem solving...

ThingM - Product and Interface Design
 
>BlinkM MaxM

BlinkM MaxM, is BlinkMs bigger, crazy sibling. It's an intensely-bright smart LED that comes as a package of two components, a control module (MaxM Master) and a daughter board with three ultrabright LEDs (MaxM Blaster).

Tod E. Kurt co-founder ThingM
 
Invisible Accent Light with BlinkM MaxM & FreeM

Invisible Accent Light with BlinkM MaxM & FreeM

"Sometimes you just want a little extra light in a room. With RGB LED tape, you can put light anywhere. But controlling its brightness and making it the color you want is a bit harder. A BlinkM MaxM can easily control LED tape, either as a stand-alone device, with an Arduino, or your computer via a LinkM."

Wednesday, July 20, 2011

LED Light Bulbs in LED Lighting

LED Lighting is not another Florescent Lamp or CFL, it has a Luminous future. Some Manufacturers have hurried a bit and made some below average quality products. We can say many are on Beta Stage. Let us not spoil its reputation or market, due to these guys.
Keep improving, there is no other alternative. Edison lamps i like, but are power hungry. CFL's are fragile and fail often. LED is important, we need to make it happen. Every designer and manufacturer has to be reliability concious and be very serous about it. If we cannot do a good job, let us not do it at all.
LED Lamp with Voltage Boost - Here the circuit is boosting the voltage, The current feedback is used to maintain brightness as battery weakens.- ELM - White LED Head Lamp
Illuminating LED Page of Garry Petrie - This page has all the basics you need to know, read this page well to prime your DIY Bench into a LED Lamp Factory. - The Perfect Light
Cant Make 'Em then you Gotta Buy 'Em. - Try this - Control your moods with colors from a LED Bulb. Ideal for Meeting rooms and Brainstorming sessions. - delabs
Naxos PAR-20 Color LED Light Bulb 8-Watt
Featuring three Luxeon K2 LEDs, this high-power RGB LED PAR-20 bulb (E26 'standard' socket) can be controlled with a remote controller!

  • 15 different color modes
  • Neutral white, Warm white
  • Dimming control, Flash mode
  • Strobe mode, Fade mode, Smooth mode

Thursday, December 02, 2010

Perpandle has been UpGraded Again

The Center piece is a bamboo tube. The bottom of this pipe is a brass part. A autotransformer dial is the big washer. The LED array is from a Failed China Lamp and The Enclosure is a 10 CD Box. The Top Byzantine Structure is a Pepper Cap from Africa and a Furniture Knob.

Perpetual Candle - White LED Lamp on Ni-Cd

From Hobby Hound - DIY Electronics


Read Earlier Post - Perpandle Design

Wednesday, October 20, 2010

Perpetual Candle - White LED Lamp on Ni-Cd

This is a easy to build LED lamp circuit for Learning and building skills. This is the first draft schematic V 1.0. It will need improvements for Higher Power Lighting.

From Schematics of delabs

I will give a short summary, The LM317 here configured for around 6.4V DC. The Q3 BC547 limits the current, you can select R3 to suit, make it 1/2W. The Ni-Cd battery pack 1.2 * 4 will not get Over-Current or Over-Voltage due to this circuit.

The IRF540 Mosfet or any other equivalent you have around, along with Q2 BC547 forms a current source for the parallel 12 LED array. Ultra-bright White LED at 20mA each or use a 1W ready LED Chip. R4/R6 can be selected for the Max LED current. The voltage of LED is around 3.1 and 20mA * 12 = 240mA is the max current. You can Tweak the design for even 5A or more but then you will need a DC/DC High frequency converter in place of LM317. The Current source also needs to switch to improve efficiency. A PWM on the mosfet gives brightness control. The entire solution (switching) can be found in many chips with semiconductor vendors today.

From Hobby Hound - DIY Electronics

One Single High Current LED may work well. 12 Matched LEDs also can be used. In LED Array some are dim, put min. resistor (3.9 ohm) for all 12 for current sharing. The resistor addition will impar the ability of Candle to work at lower battery voltages. Also resistor is less green, It wastes power, so use PWM and Single Die high current LED. Ni-Cd system may last over 5 Years if Candle is allways on Mains. Sealed Lead Acid system may go upto 2-3 years life but will have more punch. A SuperCap system may last more than 12 Years, i feel.

Source in Cadsoft Eagle format - candle.zip