how many mA output?

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=12446
Printed Date: July 22, 2025 at 7:39 AM

Topic: how many mA output?

Posted By: diggerdoo
Subject: how many mA output?
Date Posted: April 19, 2003 at 11:53 PM

How many mA will a Clifford Cyber3 supply on its LED output wire? I want to add some LEDs to the outside of the car but I don't want to burn out the brain.

Replies:

Posted By: pblargecar
Date Posted: April 21, 2003 at 7:26 AM

i could not find the cyber 3 info but the cyber 4 is 300ma. when in doubt put meter on it if you run more than on led you might need a relay

Posted By: diggerdoo
Date Posted: April 25, 2003 at 12:15 AM

Wouldn't a meter just tell me how many mA the brain is supplying, rather than how many mA it can safely supply? I haven't measured it yet, but I'm thinking that a Clifford LED will require a bit more than your average red LED (as it appears to be bigger than most). Am I correct?

Posted By: jgold47
Date Posted: April 25, 2003 at 5:38 AM

the physical size of an led is not necessarily related to the current draw....it could just have a larger cap on the top of it for fitament reasons....better off using a relay, and as a suggestion I would get a flashing relay like for a turn signal or something that is designed to cycle on and off many times....

Posted By: diggerdoo
Date Posted: April 25, 2003 at 10:13 AM

How many times could a relay flash on and off, before it became a concern to my battery? I measured a normal SPST relay, 133mA. I'm not sure how many amps my battery is capable of putting out. There's probably an equation for this, heh?

Posted By: MielGibson
Date Posted: April 25, 2003 at 11:48 AM

    12v
      ^
    . |----x---->|-|
    . |----x---->|-| C
    . |----x---->|-|

0 _/\/\/\/\/\_        B

                             E --Ground

Posted By: MielGibson
Date Posted: April 25, 2003 at 11:51 AM

MielGibson wrote:

    12v
      ^
    . |----x---->|-|
    . |----x---->|-| C
    . |----x---->|-|

0 _/\/\/\/\/\_        B


                      E --Ground

EDIT: Sorry, my ascii art sucks. I wanted to say that a transistor is better than a relay

Posted By: MielGibson
Date Posted: April 25, 2003 at 2:21 PM

OK. Try this:
If you get 12 volts Leds, the 1K resistors are not needed. The transistor should be at least 1 amp. You can add more leds depending on how much current they draw.

posted_image

Posted By: diggerdoo
Date Posted: April 28, 2003 at 2:14 PM

Thats what i needed. Thank you very much!