Cool Science Stuff!

[Ray Jones]

How ultimate. I would have done the same.

[TiE23]

I really can't decide what this thread is about, so I'm going to post this:

 

http://freesound.iua.upf.edu/index.php

You'll need an account to download, but it's simple if you don't mind clicking a link in an email.

 

It's like porn for your ears. Search around for binaural, crowd, ambient, etc. I dunno about you guys but I'm putting some of this on my Zen and going to sleep with this. Make sure you have Audacity, they use some abscure lossless audio file formats there.

[DarthAve]

I thought he died.

Bill Nye will never die. He's immortal due to all the damn videos of him I've seen. I've seen the one on volcano's 3 times, and I love it.

[Samuel Dravis]

Hey Rhettski, I have a real question!

 

I've got a gas furnace that is not turning on properly. The solenoid switch in the gas line usually usually turns off when activated by a 750mV thermocouple. My problem is I don't know if the thermocouple is being able to provide enough power to throw the switch; something might have broke inside the switch or the thermocouple. I don't want to put more than the usual amount of power onto the switch because I don't want to blow it out, so I'm trying to step down a 1.5v AA battery to 750mV in order to be sure the right amount of power is reaching the switch.

 

The catch is I don't know how to step down the power of the battery to do it. I have a mini electronics kit with a bunch of resistors, a meter and a control knob in it, but I'm not sure about how to get the resistors to take off half of the voltage so that the meter displays the maximum at 750mV. Hopefully I will be able to connect the meter and control knob as well so I can change the flow and see when the solenoid switch flips.

 

Here's a pic of the electronics kit with the resistors on the upper left, and here's one from front control panel.

 

Any ideas?

[BongoBob]

I believe that half those words in there were made up

[Boba Rhett]

A gas line? You're a braver man than I am.

 

Off track: I loved those kits! That brings back great memories.

 

The easiest and safest thing to do here would be to test to see if the thermocouple is working correctly. What's the make of the thermocouple? We'll need the make of it so we can look up its mV to Temperature chart. Then we can just pop it out, check the readings and see if it's putting out what it should be at room temperature.

 

You have a multimeter, please say yes?

 

If you're really dead set on trying to jerry rig power to a gas line (), I guess you could get yourself 750mV by doing this with a AA battery and your resistors:

[Samuel Dravis]

A gas line? You're a braver man than I am.

Hehe Rhett, I'm not THAT stupid. All the parts are disconnected from any type of gas flow and sitting on a table.

 

The easiest and safest thing to do here would be to test to see if the thermocouple is working correctly. What's the make of the thermocouple? We'll need the make of it so we can look up its mV to Temperature chart. Then we can just pop it out, check the readings and see if it's putting out what it should be at room temperature.

I'll try that tomorrow, thanks!

 

You have a multimeter, please say yes?

Yes!

 

If you're really dead set on trying to jerry rig power to a gas line (), I guess you could get yourself 750mV by doing this with a AA battery and your resistors:

Thanks, and yes I'm DEAD SET on doing it.