False Floor for Tahoe

[GCAdidas13 10+ year member]

i obviously didn't know what i was talking about OH:

 

[~Magick_Man~ 10+ year member]

or another option would be to use a solid state relay instead of a mechanical relay, they do not suffer from the "back emf" that the mechanical ones do

~Magick_Man~

edit: no it has nothing to do with the fans, it is just about the relay possibly messing up your headunit when turned off, the diode prevents the negative voltage from going into the remote output on the hu

that removes the possibility of anything happening

edit 2: haha you were too fast for me

 

[GCAdidas13 10+ year member]

or another option would be to use a solid state relay instead of a mechanical relay, they do not suffer from the "back emf" that the mechanical ones do
~Magick_Man~

edit: no it has nothing to do with the fans, it is just about the relay possibly messing up your headunit when turned off, the diode prevents the negative voltage from going into the remote output on the hu

that removes the possibility of anything happening

edit 2: haha you were too fast for me

WAIT...

this means that...

if i have the remote wire from my head unit wired through a relay to ground, to limit current on another wire ran perpendicularly through the relay, this could cause problems?!!!!?!

 

[flakko 5,000+ posts]

you guys = confusing me //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[~Magick_Man~ 10+ year member]

the diode attaches to the control side of the relay, when the field collapses a negative voltage pulse will be sent from the relay up whatever wire is supplying it with the control voltage.

in our cases this would be our hu.

that negative voltage spike *can* damage the internals of sensetive electronics.

with the diode installed when this negative puilse goes up the remote wire it will be sent directly to ground so not to cause any problems

so it is just for a measure of safety, odds are nothing would happen if the diode wasnt used but why would you want to risk a several hundred dollar hu for a

that would be just silly.

~Magick_Man~

 

[BCONNELLY 10+ year member]

Diode, hmmmm?

 

[~Magick_Man~ 10+ year member]

Diode, hmmmm?

or to simplify the situation just get a solid state relay and call it good, then you dont need to worry about diodes and shiot.

~Magick_Man~

 

[flakko 5,000+ posts]

oh pshhh. i thought you needed a diode including a relay. nvm then.

 

[chibahawk 10+ year member]

whoa whoa.. now im all confused.. i bought one of those $6 automotive relays at radioshack and will use it for proly 4 fans and 2 cold cathode tubes..

how do i figure if im in risk of damaging anything.. these big words are killing me right now aha

 

[theCybe 5,000+ posts]

re: fans;

Get ball-bearing fans, not sleeve bearings - the sleeve bearings tend to get noisy and crap out.

Also, new(er) fan technology; Magnetic tip driven; nearly silent.

http://www.dansdata.com/tmdfan.htm

^ that's the way to do it.

 

[PRIVATEpastry 10+ year member]

Is there a place online to buy fans and whatnot?

 

[GCAdidas13 10+ year member]

http://www.newegg.com

throw in my resistor idea and you're set //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[PRIVATEpastry 10+ year member]

I will be purchasing a Lanzar Opti 200x4 amp. It will go in a vented amp rack (click my sig for pics). Would I need fans for my amp rack or will the vents be enough?

Thanks.

 

[flakko 5,000+ posts]

Is there a place online to buy fans and whatnot?

http://www.ebay.com

theres a place where they sell .99 + 2 dollas shipping fans i bought 3 //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[~Magick_Man~ 10+ year member]

whoa whoa.. now im all confused.. i bought one of those $6 automotive relays at radioshack and will use it for proly 4 fans and 2 cold cathode tubes..
how do i figure if im in risk of damaging anything.. these big words are killing me right now aha

with the mechanical relays (like the one you have) you should use a diode of some sort to protect yourself. you might be fine even without one but i dont think it is worth finding out the hard way since the diodes are not expensive.

or

get a solid state relay and use that, but they tend to be a litle more expensive (around $10) and generally cant handle as much current

either way will work just fine, i am going to go the diode route for my car when i get my stuff all set up because i already have a mech relay and dont feel like taking it back //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

~Magick_Man~