Help wiring up anLED Bar

[theDogger]

Ok I looked through numours forums and I am now totally confused. I would like to wire up a 8" LED bar in my 20Watt head and have it controlled by the 6.3v. So my question is this....Should I convert the AC to DC? If so what rectifier (Formula) do I use and what resistor value (formula)and how will it effect the brightness...here is a rough schematic of the connections...


or would I be ok just running it off the AC w/a resistor say 530ohm Here is a link to the LED that I am using...Logisys Computer Inc.

any help would be great as I am really getting confused at this point

thanks

theDogger

[Arnulf]

Originally Posted by theDogger

So my question is this....Should I convert the AC to DC? If so what rectifier (Formula) do I use and what resistor value (formula)and how will it effect the brightness...here is a rough schematic of the connections...


or would I be ok just running it off the AC w/a resistor say 530ohm Here is a link to the LED that I am using...Logisys Computer Inc.

any help would be great as I am really getting confused at this point

Which part of "All you need is a 12V DC power source." confuses you ?

You can get 12V from 6.3V using a voltage doubler (Google: Greinacher doubler) and a suitable regulator (such as LM7812).

[theDogger]

Let me ask a different way what would be the best way to connect the LED light bar so that it is powered by the amp power switch? The current Power LED is run off the 6.3v.

So looking at the spec of the LED bar it already is setup to take 12vDC. So where and how would be the best way to connect it? Do I need a different LED?

Sorry but I am really a newbe when it comes to electronics.

theDogger

[TheGimp]

Your 6.3V source will not run the LED requiring 12V dc. If you can access the 6.3V AC source and use a voltage doubler you can get 12.6VDC.

Given that the LED assembly takes 1.5W, you would need 1.5W/12V= 125mA of current.

Without full details of your 6.3V source, it is difficult to tell whether or not it could provide this much current.

[theDogger]

Ok what info do you need? Or where else can I tap into coming of the transformer? Or would I be better off just making my own LED. Say take 2-3 single LED and wire them in series?

theDogger

[Soonerorlater]

controlled by the 6.3v

Do you mean powered by your 6.3v heater supplies to provide you with simple led lighting or are you expecting the 6.3v to control your led in some way to give you something else!


Brgds Bill

[theDogger]

Originally Posted by Soonerorlater

Do you mean powered by your 6.3v heater supplies to provide you with simple led lighting or are you expecting the 6.3v to control your led in some way to give you something else!


Brgds Bill

Yes I think that it is heater 6.3v

here is a schmatic


theDogger

[theDogger]

Originally Posted by Soonerorlater

Do you mean powered by your 6.3v heater supplies to provide you with simple led lighting or are you expecting the 6.3v to control your led in some way to give you something else!


Brgds Bill

I believe that it is the heater...here is a schematic

[Soonerorlater]

Yes , 6.3v is almost certainly your heater supplies.

My question is why you want to use it at all.

If you must then Arnulf and The Gimp's advice is what I would follow.

To be honest I would use a rechargeable battery, or even a wallwort as the led array appears to have a socket for one


Good luck Bill



edit

It comes with 5.5/2.1mm female plug

I presume this is a socket

[theDogger]

Your missing the point...I do not want to hassle w/ a battery and want a clean install. I want to be able to turn the amp on and the LED light up. So my question would be what would be the best way to do this. (For get the 12vLED that I posted earlier.) The current Power LED is connect to the 6.3 so I assume that I can use that for the LED??? How can I do that???

thanks for bearing with me

theDogger