You might have probably come across these fantastic high power, high efficiency LED modules and wondered how do you make these? Here we learn how to make a 100 watt LED flashlight out of it?IntroductionThe article revises the datasheet of this LED module and explains a simple driver circuit which can be used for operating it safely for the intended lighting far we have learned about LEDs with rather smaller features and applications. However the present article finds out how a LED module in the order of 100 watts can be actually used for illuminating a house at costs probably 5 times lower than the conventional lighting devices. 100 Watt LED Module ImageWe have all studied a great deal about LEDs and about their high-efficiency with power consumption. The LED technology has helped us to design and incorporate very high intensity light installations at minimal consumptions as compared to the other conventional form of lighting power consumption also means low heat emissions, which again is an added feature and helps to keep the crucial issue of global warming at bay when LEDs are days pass by, technology keeps on improving and we are able to witness many incredible and unbelievable results with these outstanding lighting 100 watt LED module is one such marvel of modern science which has created a breakthrough in the field of LED surprisingly, the device is able to generate an astonishing 6500 lumens of light intensity at a consumption of mere 100 watts, but the interesting part is the size, which is barely 40 square saving made by these devices is estimated to be five times more than any other form of light producing device and the if we compare the specified intensity of 6500 lumens, that corresponds to an excess of 500 watts light power that might be acquired from a halogen discuss the important specifications of this amazing LED in brief and in such a way that even a layman understands100 Watt LED DatasheetTypically the preferred color is white, as that produces the most favorable and desirable illumination for all power consumed is 100 watts for optimal emanated heat for the specified white color is up to 6000 intensity of light generated with the above specs is a staggering 6500 operating voltage of the device is around 35 current required for producing the above light intensity is around 3 level is safe and very high up to 4000 safe operating temperature level is very wide, ranging from minus 40 to 110 degrees optimum angle of viewing is also wide, up to 120 of the unit is truely mini, the height being mm, length 56 mm and width 40 mm SpecificationsLED Type 100W COB LEDCRI Ra70-80/ Ra80-85/ Ra90-95 / Ra95-98IF Forward Current 3500mAVF Forward Voltage 29-34voltsChip Category BridgeluxPower Output 100 WattAngle of Beam 120 degreeIllumination Magnitude 10000-14000lmSubstrate high-grade copperCCT 3000K, 4000K, 5000K, 6000K.any CCT can be customizedMain application areas Spotlight, Roving head light, light in stage shows, photography, High intensity rescue floodlight, etcThe specification narrated are sufficient for illuminating a 20 square meter space amply, almost at flood light levels ….. Features of the 100 Watt LEDThe advantages include the followingHigh power light output without degradation even after long robust mechanical specifications, involving less wear and tear and high resistance to changing atmospheric overall performance is consistently optimal throughout the operating discussed the above features of the proposed 100 watt LED lamp, it would be interesting to also learn regarding a useful recommended circuit that may be used for driving or operating the device at safe to Make a Current Controlled 100 watt LED flood Light CircuitA simple two transistor, powerful current limiter, LED driver circuit, which can be used for converting the above discussed device into a 100 watt LED flashlight or to be more accurate, a floodlight is described belowThe circuit of a 100 watt LED flood light shown below has been discussed in few of my other articles also, due its versatile and rather straightforward design; the circuit becomes very suitable in places where current limiting at low costs becomes an issue. Though the discussed designs mostly dealt with low current applications, the present circuit is specifically intended for handling high currents and up to 100 watts and more DiagramLooking at the figure we can see a couple of transistors are coupled together such that the base of the upper transistor T1 becomes the collector load of the bottom transistor upper transistor T1 which actually carries the LED current is quite vulnerable itself, and is not equipped to control the amount of current through itself and the since the base current of this transistor decides the amount of collector current that can pass, it simply means that by restricting its base current to some safe specified levels, it might be possible to keep the overall consumption within tolerable current sensing resistor connected at the emitter of T1 is used to convert the current consumed, into a potential difference, across it. This potential difference becomes the base trigger for as long as this voltage is below volts or simply below the minimum forward voltage drop of T2, T2 remains unresponsive, but once it starts exceeding this value, triggers T2 which in turn clamps the base voltage of T1, rendering it instantaneous cut off of the base drive to T1 shuts the LED for some fraction of a second, bringing the current and the potential drop across the current limiting resistor to zero. This action reverts the circuit to its original stance and the LED is again switched process repeats a number of times per second to keep the LED and the current to safe and precisely tolerable value of R2 is calculated in such a way that it keeps the potential difference across itself below volts until the LED current reaches 100 watts, after which the restricting process The LED must be mounted on a correctly optimized heatsink as per the specifications provided in its datasheet..How to Calculate the Current Limiting ResistorFor calculating R1 you may use the following formulaR1 = Us - Current,where Us = supply voltage, Hfe = T1 forward current gain, Load current = LED current = 100/35 = ampsR1 = 35 - 410 Ohms,wattage for the above resistor would be = 35 x 35/410 = or 3 wattsFormula for calculating R2 isR2 = currentR2 = = ohms,wattage may be calculated as = x = 2 wattsFor an SMPS driver circuit please refer to this articleCurrent Controlled 100 watt LED Lamp complete schematic