resistor

[justin07]

this a little quiz type thing that helped me out on resistors a bit lol and i figured it may help a few other people
http://www.facstaff.bucknell.edu/mastascu/elessonshtml/Resist/Resist2.html

 

[Phazonx]

I found a program somewhere that you can select the colors and it will tell you the ohms.

 

[justin07]

heres 1 like that http://www.dannyg.com/examples/res2/resistor.htm

 

[SenKat]

Those are EXCELLENT !!!!!

 

[toked323]

this link lets you put in supply voltage and desired Ma

http://metku.net/index.html?path=mods/ledcalc/index_eng

 

[JES]

Here are some movie tutorial lessons for people who would like to get started.

http://tangentsoft.net/elec/movies/

There is also a nice section on the EAGLE CAD program for those a bit more advanced. It looks quite nice.

 

[Things]

ya i love those resistor colour calculator things! they help me alot sometimes

 

[R._Morris]

I love the resources/people here.
You make it possible for others to learn and follow.
Thanks!

 

[tomcat]

What is thre Vdrop on most red laser diodes (senkat GB as a general) for the led resistor calc

 

[laserrod]

2.1-2.8v
180mA safe Max for >10,000 hours
From spec sheet.

Cheers [smiley=beer.gif]

 

[Spyderz20x6]

Hi,

I have an 780nm 200mW NIR laser diode. It runs using 130mA and 2.4V. I want to house this in a Dorcy Jr. and i was wondering what resistor and silicone diode i should use to lower 300mA to 130mA and 3V to 2.4V. How should i connect it? in series or parallel? I would really appreciate an answer.

Thanks

BTW, here is the data sheet for the NIR laser diode: www.zet.biz/Laser/Data/gh0780ma2c.pdf