VFT LED Lamp Build V2.0, Part Two

2012-12-09 10.29.39

A thermal fuse functioning at 133 degrees (c) was added to the light for safety,

 

Resistor calculations for three 10W LEDS.

Resistor calculations for three 10W LEDS.

Resistor calculations for one 10w LED

Resistor calculations for one 10w LED

Resistor for one 10W LED

Resistor for one 10W LED. 3.3 ohms rated to 5 watts.

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VFT LED Lamp Build V2.0, Part One

My latest LED light at 30w. It's bright and hot!

My latest LED light at 30w. It’s bright and hot!

Here’s my latest light build– three 10w LEDS (two warm white, one royal blue) on a heatsink and fan assembly. It’s getting pretty hot (60 degrees c) at the moment, and I think would be dangerous if the fan failed. The next step is to add a thermal fuse to cut out at about 100 degrees (c) in case the fan gives out on a hot day!

Here are all the tools and materials for the build.

Here are all the tools and materials for the build. Notice: Dremel, heat sink compound, small self-tapping screws, temperature meter, benchtop power supply, soldering iron, safety googles and Jaycar receipt.

Mounting LEDs to Heatsinks

I’m getting pretty good at mounting high power LEDs to aluminium heatsinks; here’s the procedure:

1) Drill some pilot holes
2) Apply heatsink compound
3) Use small self-tapping screws to attach the LEDs to the heatsink

Make sure you drill holes smaller than your screws!

Super bright 30w led light on heatsink and fan. 12v.

It’s bright! Notice the temperature probe for measuring the heat of it.

It's running about 60 degrees (c) with the fan on. I'm thinking to add a temperature cut-off fuse (thermal fuse at 100 degrees functioning?).

It’s running about 60 degrees (c) with the fan on. I’m thinking to add a temperature cut-off fuse (thermal fuse at 100 degrees functioning?). Safety first!