How to Make an Ultraviolet LED Flashlight
Ultraviolet LED lights are used for anti-counterfeiting purposes.
This type of lighting can replace the technology of black lights.
This can actually illuminate watermarks on currencies and documents so inspectors can see traces of fraud.
Also, this is a good device that can get rid of harmful micro organisms.
Most micro organisms known to science are sensitive to UV rays and they immediately die when they absorb this.
This can be used to disinfect and sterilize things at home especially those used by babies.
This is expensive if you purchase it from the market.
This is why home-made UV LEDs projects were introduced.
The following is a do it yourself project one can easily follow at home: Step 1: Purchase your UV LED bulb from the electronics store first.
If the nearest store do not have this in their inventory, you can always scour for good finds online.
Also purchase the other materials you are going to need such as ¼ watts of 100 ohm resistor.
Step 2: Buy an inexpensive flashlight, preferably one that uses 1.
5 volt batteries-4 batteries.
Use this flashlight but you only need to remove a few parts and replace it with the UV ones.
Step 3: Now remove the head of the flashlight and the lid that covers the bulb.
Gently remove the bulb.
Some flashlights have easy to remove bulbs-you might need only to give it a little pull while some requires you to remove some screws first.
Step 4: Once you have already removed the old bulb, install the new one.
Use a clamp to position it to the right place and then use a soldering iron to heat up the bottom part of the bulb.
Step 5: After the bulb has cooled down, solder the 100 ohm resistor this time.
Attach it to the positive lead.
Locate the positive lead of the flashlight.
It is usually the longer end.
Get the shorter end and fold it so you can make a right angle.
Snip off the excess part of the positive lead.
Also snip off the leads of the resistor so they have half an inch of size.
Step 6: Now solder the resistor to the positive end of the lead.
Make sure you have inserted the longer lead to the bottom part of the bulb.
There should be a hole there so you can insert the lead.
Step 7: Now you can assemble the outer covering and use the UV LED flashlight you have created.
This type of lighting can replace the technology of black lights.
This can actually illuminate watermarks on currencies and documents so inspectors can see traces of fraud.
Also, this is a good device that can get rid of harmful micro organisms.
Most micro organisms known to science are sensitive to UV rays and they immediately die when they absorb this.
This can be used to disinfect and sterilize things at home especially those used by babies.
This is expensive if you purchase it from the market.
This is why home-made UV LEDs projects were introduced.
The following is a do it yourself project one can easily follow at home: Step 1: Purchase your UV LED bulb from the electronics store first.
If the nearest store do not have this in their inventory, you can always scour for good finds online.
Also purchase the other materials you are going to need such as ¼ watts of 100 ohm resistor.
Step 2: Buy an inexpensive flashlight, preferably one that uses 1.
5 volt batteries-4 batteries.
Use this flashlight but you only need to remove a few parts and replace it with the UV ones.
Step 3: Now remove the head of the flashlight and the lid that covers the bulb.
Gently remove the bulb.
Some flashlights have easy to remove bulbs-you might need only to give it a little pull while some requires you to remove some screws first.
Step 4: Once you have already removed the old bulb, install the new one.
Use a clamp to position it to the right place and then use a soldering iron to heat up the bottom part of the bulb.
Step 5: After the bulb has cooled down, solder the 100 ohm resistor this time.
Attach it to the positive lead.
Locate the positive lead of the flashlight.
It is usually the longer end.
Get the shorter end and fold it so you can make a right angle.
Snip off the excess part of the positive lead.
Also snip off the leads of the resistor so they have half an inch of size.
Step 6: Now solder the resistor to the positive end of the lead.
Make sure you have inserted the longer lead to the bottom part of the bulb.
There should be a hole there so you can insert the lead.
Step 7: Now you can assemble the outer covering and use the UV LED flashlight you have created.
