Help[!]

[toked323]

ok so i recieved senkats GB diode yesterday and i hooked it up to daedals circuit and it shines dim but i put an LED and it shined normal can anyone offer me help

 

[Things]

maybe try turning the pot a little bit? not to far, just see if the diode gets brighter?

 

[toked323]

i dont have a pot i have a 5 ohm resistor in series with the 4 ohm instead of the pot shold i put the 5 ohm in paralel?

 

[Things]

try it?i'm not exaclty shure how you have it configured, but make shure to try it on a led first!

 

[Gazoo]

i dont have a pot i have a 5 ohm resistor in series with the 4 ohm instead of the pot shold i put the 5 ohm in paralel?

If you have everything wired correctly, it should work.

 

[toked323]

i tried it on an LED and it worked perfect ill take a pict of my circuit

 

[Things]

an LED doesn't require quite as much as a LD, so if the led is on, your LD should be on, but not very brightly. what colour LED are you using?red?,white?, blue?, yellow?
if i recall corectly, red is about 1.5V yellow is about 2V and blue/white is about 3V

 

[toked323]

i used a small blue

 

[o_DEATH_ANG3L_o]

That would be 9 ohms. I put two 5 ohm resistors in PARALLEL for 2.5 ohms and mine lases great at 160 mA. So take the resistors and put them in PARALLEL.

 

[a_pyro_is]

That would be 9 ohms. I put two 5 ohm resistors in PARALLEL for 2.5 ohms and mine lases great at 160 mA. So take the resistors and put them in PARALLEL.

??? :-? Are you using a 317 to regulate? or is that just a current limiting resistor?

 

[o_DEATH_ANG3L_o]

I am using Daedal's circuit and I measured the resistance of the pot at 160 mA. It was roughly 3.0 ohms. So I just replaced the pot with two 5 ohm resistors in parallel.

 

[a_pyro_is]

Weird...2.5 Ohms in Daedal's circuit gives me 500mA.

 

[Gazoo]

Yeah, I get about the same too...500ma's with 2.5 ohms.

 

[a_pyro_is]

I am using Daedal's circuit and I measured the resistance of the pot at 160 mA. It was roughly 3.0 ohms. So I just replaced the pot with two 5 ohm resistors in parallel.

Or is that a 3 Ohm in series with a 4.7 Ohm for 7.7 Ohms and 165mA?

 

[xgeek]

Unless you wired you LM317 wrong then the only way to limit to 165mA is to use a 7.7 ohm resistor as a_pyro_is said. 2.5 ohms will limit at .500mA.

It's a simple formula with the LM317:-
1.25 / resistance = mA

 

[toked323]

i used a 5ohm resistor and get between 200-250mA the prob was i used daedals ciruit the wrong way with out checking the pins for the lm317