UV ereasers with led's

[Exo]

Does anyone know if it would be possible to make an UV chip ereaser using UV leds?

I found some ultrabright UV leds and perhaps letting the led shine directly into the chip's window would erease it?

would make a simple and compact ereaser, anyone already tried such a thing?

 

[JohnBrown]

Unless the LEDs come with a safety warning, I would doubt that the UV light is U enough. The tubes generally used for erasing EEPROMs are somewhat dangerous to humans. I'd guess that UV LEDs are more similar to the so-called 'black light' units which used to popular at discos(may still be popular for all I know[or care]).

 

[e]

I have been meaning to give it a try with a UV led i got laying around, not too sure it will work... The led did come with a warning...

 

[Crofty]

:idea: Do a comparison of the wavelengths of normal tubes and the UV Led, if there close-ish? it should work.

The Leds higher focusing may actually be better?? I'm interested in this application too Let us know if it works?

Edit## Checkout this Link >> https://optics.org/articles/news/9/11/14/1 @wavelengths of 290nm and 275nm, this should be possible. Although lower watts, its concentration on a pic/eprom die should blast it

Steve

 

[Exo]

I ordered the led's today, and the dealer told me these leds indeed have a warning that they may cause eye damage when looking in them...

Will give it a try as soon as they arrive

 

[JohnBrown]

Eye damage is one thing. The UV tubes used in EEPROM erasing cause skin cancer.

 

[Exo]

It doesn't work with the leds
bought myself a G4T5 Uv tube , wich works

 

[laroche73]

UV LEDs for erasing Eproms

Do a comparison of the wavelengths of normal tubes and the UV Led, if there close-ish? it should work

I looked into trying this with "super bright" high output LEDs several months ago. The lowest wavelength LEDs I could find were around 400-405nm,

**broken link removed**

and most blue LEDs fall in the 470nm range

**broken link removed**

My old Intel databooks recommend exposure to UV light of 2537 Angstoms (254 nm) for erasure, and the only thing that comes close are UV lamps like the G4T5.