Skip to main content

Since the question of selecting the correct resister value for powering LED's comes up frequently, I did up a spreadsheet to make it easier for myself.

Then I thought why not put it on the forum for others who may find it useful?

So here it is.

It is the result of my own research and the input of several folks here on the forum; notably gunrunnerjohn and daleh. Their input is hereby gratefully acknowledged.

As usual, the author accepts no liability for its use whatsoever.

Any suggestions and or corrections are greatly appreciated.

This version is protected to maintain integrity, except for the yellow cells.

It is in Office 2007 format.

 

Have fun

 

Rod

 

Attachments

Last edited by Rod Stewart
Original Post

Replies sorted oldest to newest

I'm using Open Office 3.2.1. I probably should update to 3.3.0. Cheryl, what version of OO are you using?

 

The moment I attempt to change data in any of the yellow cells I get an error message which says, "Document open in read-only mode." and I cannot change anything.

 

 

EDIT:

Upgraded to OO 3.3 (the current version) and it STILL opens in read-only mode. Strange... 

Last edited by Rich Melvin
Originally Posted by OGR Webmaster:

I'm using Open Office 3.2.1. I probably should update to 3.3.0. Cheryl, what version of OO are you using?

 

The moment I attempt to change data in any of the yellow cells I get an error message which says, "Document open in read-only mode." and I cannot change anything.

 

 

EDIT:

Upgraded to OO 3.3 (the current version) and it STILL opens in read-only mode. Strange... 

Rich;

I am totally baffled as to why this is happening.

The sheet protection would not cause that.

Do you have access to another computer that you could try?

 

Rod

Forest;

Only one glitch?

I have found a couple and I will upload an updated version in a few days after more feedback.

Regarding your question; if you enter only a space bar stroke in the AC cell, the rectified cell should return #VALUE!, but the balance of the sheet should work just fine.

The sheet is set up so if the Ac cell is empty, it uses the DC value. This means the AC cell should be completely empty, not filled with a "0".

 

Rod

ire them in parallel -- that is use the normally closed contacts of the switches.
That is the ones that are open when the magnet is close to them
Set it up so that the switch is held open with the magnet when the door is closed. When the door opens the magnet will move away from the switch and turn on the lights. led strip lighting

Power in >>--------- Switch1 ------------ Switch2 
.............................. |......................... |
.............................. L ------------------------T-----------> LED -- Strip
Return power ----------------------------------------…


The yahoo editor is really screwed up so this might not show well
I do not know if you want to switch the + or - side of your led strip lighting outdoor.
Run the power in into one side of each switch take the power out of the other side of each switch
and run that into one side of your 12v led light bars then run the other side of the LED back to the return side of your battery.





Post

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

×
×
×
×
Link copied to your clipboard.
×
×