madbeanpedals::forum

General => Open Discussion => Topic started by: Gledison on April 13, 2014, 03:29:12 PM

Title: quick help: CLR for LED, little confusion :S
Post by: Gledison on April 13, 2014, 03:29:12 PM
Hey guys!
im starting doing the LED mod for my crybaby and saw in different instructions that the CLR should be soldered on the negative lid of the LED.
i always followed the MB standard wiring and there the CLR is soldered on the positive lid, what always made sense for me.
I thought that the electrons have to pass first through the resitor and then reach the LED and flows to the negative part...
this might be very stupid, but i got confused!!!
and well, it seems that both ways woks! i just dont really got how....
Cheers
Title: Re: quick help: CLR for LED, little confusion :S
Post by: slimtriggers on April 13, 2014, 03:45:05 PM
I don't think it matters which side you attach the resistor to. 

Here's a handy resistor calculator, too, if you need it:
http://led.linear1.org/led.wiz
Title: Re: quick help: CLR for LED, little confusion :S
Post by: gtr2 on April 13, 2014, 04:21:29 PM
It makes no difference.  Whatever is most convenient.

Josh
Title: Re: quick help: CLR for LED, little confusion :S
Post by: jkokura on April 13, 2014, 06:41:08 PM
I was told that since things are in series, it makes no difference. In this case, it's usually whatever's easiest.

Where I wonder about series order is when there's a capacitor and a resistor. Is there a need to put one in front of the other?

Jacob
Title: Re: quick help: CLR for LED, little confusion :S
Post by: Gledison on April 13, 2014, 07:38:13 PM
Quote from: jkokura on April 13, 2014, 06:41:08 PM
I was told that since things are in series, it makes no difference. In this case, it's usually whatever's easiest.

Where I wonder about series order is when there's a capacitor and a resistor. Is there a need to put one in front of the other?

Jacob
thanks for the answers...and now jacob question...good one!!!
answers...?
Title: Re: quick help: CLR for LED, little confusion :S
Post by: Thomas_H on April 13, 2014, 07:49:58 PM
Quote from: jkokura on April 13, 2014, 06:41:08 PM
Where I wonder about series order is when there's a capacitor and a resistor. Is there a need to put one in front of the other?

Jacob
If we are talking about AC signals do what you want.
Title: Re: quick help: CLR for LED, little confusion :S
Post by: Gledison on April 14, 2014, 09:46:21 AM

Quote from: Thomas_H on April 13, 2014, 07:49:58 PM
Quote from: jkokura on April 13, 2014, 06:41:08 PM
Where I wonder about series order is when there's a capacitor and a resistor. Is there a need to put one in front of the other?

Jacob
If we are talking about AC signals do what you want.
Well, using a 9V DC, how ate the rules for caps?
Cheers
Title: Re: quick help: CLR for LED, little confusion :S
Post by: Thomas_H on April 15, 2014, 12:49:27 PM
There is no reason why I would have a series resistor and a cap connected to a DC power supply !?

+9V ---[=]---][---  ??
Title: Re: quick help: CLR for LED, little confusion :S
Post by: rullywowr on April 15, 2014, 12:56:52 PM
The circuit which comes to mind for this example is an astable multivibrator, usually used where you flash two LEDs....
(http://i.stack.imgur.com/G6Bx6.png)