How do I make a LED FADE without an IC

[DeCiscoKid]

This is what I am looking to use. Thanks for this post. It seems so simple. And yes LED's do actually charge.

[TroyOi]

@DeCiscoKid Where do you get that information? I've worked with LED's since the 80's. They are semiconductor diodes. Diodes do not hold a charge. If there is any amount of capacitance in a typical LED, it is negligible, and not something you could make use of in a circuit like this.

[ricglos]

JUST what kind of LED do you use that charges up? I thought the capacitor charged up. Dont you review your vids before you post them? You know that when you want to teach any new person in basic electronics, it is best to know what you are doing first!

[SNAKEMESH]

Yeah. Well done! Just what I wanted. And thanks for the diagram at the end too!

[laserman55901]

switch off: open

Swithc on: closed

ICs may be needed for what you want, a transformer may take even more effort needing a way to eliminate AC flicker. Its very common with leds on and ac current. Try researching a little more and you might find what you want.

[rattytatt521]

How to fade an led IN and OUT without 555 - pretty simple

i39.tinypic. com/2hf0t95.png

[andresfabrizio]

Great job!!

[NecroBoxProductions]

There is a flip flop circuit I did in highschool that turned on and off without an IC. Look up different types of flipflops.

[Lokivoid]

theres multiple ways of fadeing with a 555 most effective way would be the use of a transistor

[Vitaluminus]

Hi sir,

Very interesting Fade IN/Out LED.

Now, can you make it so there is a constant current that goes IN/Out...

I'm presuming controlled by a 555 or something like that ...

Thanks,

[AgentCROCODILE]

You may notice this on some PSU or AC-DC adaptor case LEDs.

[crusader84941]

what is happening is that when the circuit is on the capacitor charges and when the circuit is urned of the electricity flows through the resistor and the capacitor slowly let go of the charge and then the led fades into the ground

[HaloHedgehog22]

is there any way to make a white light turn red with the push of a button so that it stays red until you push another button so it goes back to white?

[inferno2080]

wow ur really dumb.

[venomx2]

@inferno2080 Says the guy who spells your "ur".

[biggi3lue]

@venomx2 Umm, I'm sure we've all learned since 7 months ago that "your" is actually you're

[ar0n7676]

@HaloHedgehog22 get a switch/button that has a common ground and two leads. make sure that when one lead is on the other is off. hook up a white and a red led to the two separate circuits. you could incorporate the circuit in the video if you wanted them to fade.

[wicked888]

Wow this is so stupid.

btw ... with a cap, you won't get a nice fade out. resistor will just dim the led ... not help in fading.

[usuryfree1776]

dantheman210,

yes, your theory circuit will work. the wall plug transformer/rectifier is converting AC (125V @ 15A) to DC. A DC circuit will only draw as many amps as it is designed to.

pressing the momentary switch closes the circuit and charges the cap. releasing the momentary switch opens the circuit, which allows the charged capacitor to drain to ground (through the LED).

size of cap adjusts two things:

1. delay of LED 'turning on'

2. length of time LED stays on

[davidbball13]

you can do a fading LED with two transistors

[kalijason]

that's great :)

and I made a glowing LED just like Razer mouse