LED's Problem

[wsvperera]

Can anyone know the correct voltage for Blue Color LED ,

I got few of them & i tested through 4.5 v battery and they burn with some kind of smell

Thank you !

 

[siri24]

I think 3v or 3.5v

 

[nagaya]

Can anyone know the correct voltage for Blue Color LED ,

I got few of them & i tested through 4.5 v battery and they burn with some kind of smell

Thank you !

chk at data sheets....i cant remeber......
then use Si diode to drop voltage (0.6V per one) or use appropriate resistor...it's easier than using regulators

 

[wsvperera]

chk at data sheets....i cant remeber......
then use Si diode to drop voltage (0.6V per one) or use appropriate resistor...it's easier than using regulators

how may I find data sheet ?
si means silicon ?

 

[nagaya]

3.7V to 4.1V

http://www.datasheetcatalog.org/datasheet/gilway/E73-UB.pdf

 

[nagaya]

meken ona datasheet ekak ganan puluwan macho
\
http://www.datasheetcatalog.org

 

[wsvperera]

3.7V to 4.1V

http://www.datasheetcatalog.org/datasheet/gilway/E73-UB.pdf

thank you !

 

[nagaya]

welcome macho...

 

[wsvperera]

3.7V to 4.1V

http://www.datasheetcatalog.org/datasheet/gilway/E73-UB.pdf

According to above data sheet

voltage to blue color is 3.7 - 4.1 v , red color is 1.85 - 2.2 v
can you explain the reason for it and , work both together with 6 V line ?

if V = I R , then , V=6 & suitable value for I ? , after that we can find value for R (resistor) !

 

[nagaya]

According to above data sheet

voltage to blue color is 3.7 - 4.1 v , red color is 1.85 - 2.2 v
can you explain the reason for it and , work both together with 6 V line ?

if V = I R , then , V=6 & suitable value for I ? , after that we can find value for R (resistor) !

jst becoz of E=hf & E=Vq
u need to excite electrons of atoms ne
and f is high in blue than red...

at 20mA 6-3.7=0.02*R

;ask if u need more help

 

[wsvperera]

jst becoz of E=hf & E=Vq
u need to excite electrons of atoms ne
and f is high in blue than red...

at 20mA 6-3.7=0.02*R

;ask if u need more help

Hmmm thanx for the information ,
I did those calculations in A/L physics , but now can't remember anything

 

[nagaya]

Hmmm thanx for the information ,
I did those calculations in A/L physics , but now can't remember anything

We did for OL Elec tooo

 

[nagaya]

macho umba me para AL da ?

 

[wsvperera]

ow
uba ?

 

[wsvperera]

mepara kiwwe 2008 aug wala kara

 

[nagaya]

math kala ne
umba phy kale ma nadda ara blog eke thiyenne ehemane