Any electrical engineer type gurus?
I have a streamlight ultra stinger flashlight. I would like to try to convert it to an LED light. I want the brightest LED i can find. I’m assuming I need a resister also but I’m not sure which one. The rechargeble battery says its for 3.6V and 6V models so I’m not sure which it is. (the battery is 5 cells each about the size of a C battery) if that helps. I will get it to fit if someone can help me with which components to get. Thanks
(and yes I know it would be easier to just buy an LED flashlight)
Okay, googling on your flashlight shows it to be the 6 volt model, which puts out 75,000 candlepower with a Xenon-halogen gas-filled bi-pin bulb. Not going to come close with LED’s!!! So, to convert it to LED’s you’re going to have to measure how much space we’ve got to put the LED’s in, allowing for a resistor for each LED. The resistor will keep the LED within it’s current handling range.
Rechargeable C cell batteries have ‘about’ 6.5 amp/hours they can store. The most powerful LED that mouser sells will consume 1.2 watts of power. Your flashlight provides about 39 watts, we’ll have to throw away about 58% because of the resistors. All this brings us to the ? of: How long do you want it to stay on??? This will determine the number of LED’s, limited by the space to put them in!
So, what is the diameter of the lens and at what angle does it converge to the bulb???
Barrie
Note: LED’s were invented to conserve power whereas tungsten filaments use the more ‘brute force’ approach.
radian64 is about right with the 1 watt and 10 ohms; resistor dissipation will about 1.225 watts (hot) and we’re running out of LED room with 1 watters!
Spotlight Rechargeable LED Vehicle Flashlight
|
|
Mini Solar Power rechargeble 3 LED Flashlight Keychain $2.99 |
|
|
Green Solar Power Rechargeble 3 LED Flashlight Torch Keychain $0.01 |
|
|
20pcs Solar Power rechargeble LED Key chain Flashlight $13.99 |
|
|
orange Mini Solar Power rechargeble 3 LED Flashlight $2.59 |
|
|
Mini Solar Power rechargeble 3 LED Flashlight Keychain $2.59 |
|
|
Black Mini Solar Power rechargeble 3 LED Flashlight Keychain $0.99 |
|
|
Mini Solar Power Rechargeble Flashlight Keychain 3 LED $2.50 |
|
|
7x Mini Solar Power rechargeble 3 LED light Keychain $9.99 |
|
|
Solar Power rechargeble LED Flashlight Torch Key chain $2.99 |
|
|
Red Mini Solar Power rechargeble 3 LED Flashlight Keychain $0.99 |
|
|
Cuisinart SP-2 Stainless Steel Rechargeable Salt and Pepper Mills $54.95 SP-2 Features: -Salt & pepper mills. -Stainless steel housing design with embossed logo. -Rechargeable mills are always ready to use. -15-20 Minutes continuous run time. -Fine to coarse grind adjustment. -LED lights your food when grinding. -Charging base with charge and ready lights. -Clear spice holder container lets you know when to refill. -Overall dimensions: 9.92” H x 3.11” W x 6.6” D …. |
|
|
Streamlight 74301 Strion LED Flashlight with AC/12-Volt DC and 1-Holder, Black $93.18 Ultra compact and powerful, Streamlight’s Strion LED rechargeable flashlight offers three microprocessor-controlled variable intensity modes, strobe mode and the latest in power LED technology. The combination of rechargeable batteries and high output from the C4 LED technology results in one of the lowest operating costs of any flashlight made. Rechargeable, ultra-compact and powerful. Se… |
|
|
Black CREE LED Rechargeable Flashlight 500 lumens 3 switch Mode: Strong Brightness / Normal Brightness / Flashing $19.14 CREE Led 500Lm K8 Flashlight Torch Lamp Charger 18650 Features: Output bright can come to above 500 lumens [lm] Our products are firmly wired and comes with two chargers .The smaller AC adapt and 12V DC car-adaptor provides added convenience.( LED indication for Power On / Charging / Full charge ) Internal wiring applies the high efficient booster circuit, working voltage is wide and can ut… |
|
|
Kidde KN-SMFM-i Silhouette Hardwire Low Profile Smoke Alarm $9.50 120 volt AC/DC Silhouette Hardwire Low Profile Smart Hush Kidde Smoke Alarm / Detector with Sealed Rechargeable Lithium Battery… |
|
|
Duracell Value Charger With 4AA Pre Charged Rechargeable Nimh Batteries, CEF14DX4 $10.99 Charges 4 AA or AAA batteries at one timeLED to indicate charge statusCompact size is great for travelCharge plugs directly into wall with no cord necessary… |
