I had an idea of making a 9-LED UV/Blacklight flashlight, and to use it as a small UV-lamp. And I also wanted it to work constantly, without having to replace batteries or recharge li-ion accumulators.
Here is an example of what you can get on Ebay for just 2$: 9 LED Ultra Violet UV Blacklight MINI Portable Flashlight Torch Light Lamp CSI
You could buy a big and expensive UV-lamp, but it's not a good option because of
a) power consumtion;
b) amount of UV they produce.
You'll just need a voltage-variable or 4 volt AC - How to make variable voltage AC and a soldering iron.
The flashlight I wanted to use works with three AAAA battereis, 1.5V each. So we'll need ~4V total to power that thing from AC. Make sure the voltage is right using your multimeter. 5V or more will probably kill the LEDs in mere seconds. It's good to have a hot glue as well. And you might also want to add an on/off button on top of the flashlight.
The hardest thing to do - is to figure out where the positive and negative outputs on the flashight. In my case, the positive one was on a spring inside the flashlight case. And the negative one - on the inner side of the case, where the thread is. It's not easy to solder anything on that damned thing, trust me. Only after soldering and hot-glueing all the wires I was confident it's gonna hold on place.
I forgot to take a pic ):
AC+1.5$ for AC's step-down converter + 2$ for the UV flashlight.
Yeah, it looks ugly, but I doubt you would've gotten a UV lamp any cheaper!
Now you can use this thing to blacklight some UV-painted drawings or make a glowing UV-painted jar.
Here is an example of what you can get on Ebay for just 2$: 9 LED Ultra Violet UV Blacklight MINI Portable Flashlight Torch Light Lamp CSI
You could buy a big and expensive UV-lamp, but it's not a good option because of
a) power consumtion;
b) amount of UV they produce.
You'll just need a voltage-variable or 4 volt AC - How to make variable voltage AC and a soldering iron.
The flashlight I wanted to use works with three AAAA battereis, 1.5V each. So we'll need ~4V total to power that thing from AC. Make sure the voltage is right using your multimeter. 5V or more will probably kill the LEDs in mere seconds. It's good to have a hot glue as well. And you might also want to add an on/off button on top of the flashlight.
The hardest thing to do - is to figure out where the positive and negative outputs on the flashight. In my case, the positive one was on a spring inside the flashlight case. And the negative one - on the inner side of the case, where the thread is. It's not easy to solder anything on that damned thing, trust me. Only after soldering and hot-glueing all the wires I was confident it's gonna hold on place.
I forgot to take a pic ):
AC+1.5$ for AC's step-down converter + 2$ for the UV flashlight.
Yeah, it looks ugly, but I doubt you would've gotten a UV lamp any cheaper!
Now you can use this thing to blacklight some UV-painted drawings or make a glowing UV-painted jar.
Merkur Futur Adjustable Double Edge Safety Razor
ReplyDeleteMerkur Futur Adjustable Double Edge Safety Razor 샌즈카지노 (90 33 001) · Merkur Futur MK-1637 Adjustable 바카라 사이트 Safety Razor, Extra Thick 메리트 카지노 쿠폰 Handle. · Merkur Progress Adjustable Safety Razor (90 33 001).