led wiring to alarm

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sufferrar

Copper - Posts: 190

Joined: July 17, 2002

Location: Trinidad and Tobago

Posted: November 11, 2002 at 6:59 AM / IP Logged

what is the best way to add another led to an alarm but you want it to imitate the original . i don't want to connect it to the original because it will share the current be be not bright as just one.

Player69

Silver - Posts: 504

Joined: October 27, 2002

Posted: November 11, 2002 at 11:03 AM / IP Logged

hook it in parellel with the original. It will not make it any dimmer. Do not hook it in series.

sufferrar

Copper - Posts: 190

Joined: July 17, 2002

Location: Trinidad and Tobago

Posted: November 11, 2002 at 12:32 PM / IP Logged

the original led is a small one . i'm putting a larger one that i know draws alot more current that the smaller one. would it be bright enough ? how would it not make it any dimmer ?

Player69

Silver - Posts: 504

Joined: October 27, 2002

Posted: November 11, 2002 at 3:07 PM / IP Logged

IT will be fine.

The Raven

Member - Posts: 3

Joined: November 02, 2002

Location: Canada

Posted: November 11, 2002 at 8:04 PM / IP Logged

When Adding LEDs to ANY alarm, you should always run them in series, so that the current is not brought up too much, like wiring them in paralel will do. Yes the LEDs will be a little dimmer, but should not be enough to be noticable. I had 4 at one time installed in my A pillers and all were bright.

"Speed costs, How fast do you want to go?"

sufferrar

Copper - Posts: 190

Joined: July 17, 2002

Location: Trinidad and Tobago

Posted: November 18, 2002 at 5:30 AM / IP Logged

o.k. I hooked up another led to the alarm .

in parallel: the extra led lit very very dim.

in series : they both lit with same brightness but dimmer that just one led.

I don't think it is bright enough because the led that came with the alarm is a small one and the extra one that i put in was a similar one. the alarm says that the voltage output fro the led is 2v.

how can i get it as bright as it should be.? i'm willing to use a relay but don't know where to hook it up.

cpgoose

Gold - Posts: 1,098

Joined: July 08, 2002

Location: United States

Posted: November 18, 2002 at 9:15 AM / IP Logged

I'm interested in the answer too, cause I don't know either. Too bad you got 2 conflicting answers.....which is correct.....series or parallel? <jeopardy theme in background>

Player69

Silver - Posts: 504

Joined: October 27, 2002

Posted: November 18, 2002 at 11:21 AM / IP Logged

sufferrar you need an led of the same voltage if you want it to be as bright as the original. Parellel will be fine like I stated earlier. An LED will draw around 10 ma. If the output can't handle 20ma something is very wrong.

A relay would draw way more power and will not work well. The relay would also be clicking every time the led flashed led wiring to alarm -- posted image.

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led wiring to alarm

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