Will this work? Powering Opus

**dmurray14** · 12-31-2005, 12:32 AM

Hey guys,

Here's the deal. I have an Opus POL powering a USB hub, and the hub needs to be on BEFORE the computer turns on (so as soon as the ignition is on) and it needs to stay on until the computer goes off (so as soon as the 12v out from the computer turns off). However, I'm kind of confused because I have two 12v triggers and I need to use them both (ignition and 12v from computer). I need the Opus to be on as long as one or both of the triggers are at 12v. How can I do this?

I was thinking I could do it by feeding both the ignition 12v and computer 12v into the Opus trigger line and using a diode on each of the 12v lines (see diagram) Would this work? If so, what/how big diode would be required?

Thanks...

Dan

**dmurray14** · 12-31-2005, 11:45 AM

bump

**dmurray14** · 12-31-2005, 03:40 PM

I can't believe no one knows the answer to this..

**DarquePervert** · 12-31-2005, 05:19 PM

Why don't you contact Opus Solutions and ask them?

**lampster** · 12-31-2005, 05:40 PM

I am pretty confident what you have with the diodes should work fine. The other option that will surely work would be to use a CMOS OR gate.

**dmurray14** · 12-31-2005, 10:47 PM

NO one?

**DarquePervert** · 12-31-2005, 10:56 PM

My previous suggestion still stands.
Opus Solutions manufactures the product, so they're the experts. ASK THEM.

Seriously... You're wanting to do something with the opus that's unusual and nobody else here has done. So don't get all ****y when nobody answers because nobody knows.

Go to the source.

**dmurray14** · 12-31-2005, 11:42 PM

Originally Posted by DarquePervert

My previous suggestion still stands.
Opus Solutions manufactures the product, so they're the experts. ASK THEM.

Seriously... You're wanting to do something with the opus that's unusual and nobody else here has done. So don't get all ****y when nobody answers because nobody knows.

Go to the source.

First of all, I apologize...I had the thread open and I thought I had refreshed when I posted that last one. Apparently I hadn't and had missed new posts.

NOW....Using diodes is far from unusal. This is a basic concept. Just wanted to check with some people to make sure it would work. No need for you to get your panties in a bunch. The spirit of this forum is to invent your own solutions, not run to companies looking for help - or at least it was when I started coming here.

Does anyone know how much current the Opus draws from the trigger line? Can't be much...

**DarquePervert** · 01-01-2006, 08:07 AM

Yeah, but come on. At some point when you're asking a question repeatedly and you're getting no answers, you've got to realize that you're going to have to find another source for the information you want. No offense to lampster, but relying on one person whose first post is saying your idea won't work doesn't seem to be the most reliable source in my opinion.

I'm not an EE. I know enough about electricity to be able to wire something correctly. I don't get into modding hardware because I don't know what I'm doing.
Using diodes may very well be common, but I'm not the one that would know. I look at it this way. You can either try your solution and see if it works or ask the experts. If you do it yourself and it works, then great. You could also destroy your Opus or something worse.
Me, I'd ask Opus because I'd want to know definitely that it would wok before I tried it. You may not feel that way.

And my panties aren't in a bunch. They're actually lying on the bedroom floor from last night.

You (and everyone else here) seems to think that when I suggest something like this or point out what I believe to be a logical step to take that I'm ****ed off or upset. Far from it.
This is my normal self. I don't pull punches. I don't deal withy bull****. I say what I mean or what I think, plain and simple. I don't pretty it up. I'm not the most tactful individual on the face of the earth and I know this.
If that comes across like I'm upset, so be it. Maybe I need to put a dtupid smiley at the end of every statement.