Engineering - October 2007

2007-10-18 20:30:50 · 4 answers · asked by Anonymous

2007-10-18 20:10:00 · 3 answers · asked by budu 1

2007-10-18 19:59:56 · 1 answers · asked by vini s 1

I'm talking about the simple one where you use one diod and resistor. Any formulas too? Thankyou. P.S. Not looking for LM317 diagrams. Just looking for the simple diod-resister type.

2007-10-18 19:44:26 · 5 answers · asked by Anonymous

2007-10-18 19:04:04 · 4 answers · asked by Anonymous

Something that shouts technology...like gadget or gizmo or tech or device...

2007-10-18 17:03:35 · 4 answers · asked by Anonymous

I’m working on a home project and I don't want to get mixed up in battery replacement or recycling. Weight is not a problem. I prefer low maintenance or none chemical reactions to lead acid. Is their any thing out their 40 to 50 years between replacements?

2007-10-18 16:26:12 · 3 answers · asked by grayparrott 1

2007-10-18 16:18:50 · 4 answers · asked by dan s 1

I Want To Make A Robot That Goes Forwards And Backwords. I Want It To Be Little. How Can I Do This?

2007-10-18 13:52:14 · 8 answers · asked by Hey 1

well im using an op amp in a circuits class and we connected some resistors on a breadboard and were asked to find the gain at different frequencies ( we used a function generator as the power source with a sine wave setting i dont know if that helps) and as i get to frequences of about 100kHz my gain is no longer close to the value i calculated using vin/vout why is this???

please help

2007-10-18 12:39:47 · 3 answers · asked by bob mark 2

i no this but i am no genius not a nerd........i am just smart (LOL) ....anyuwayssssshere is my question a small cube has 2 cm lenghth,4 cm wide, 0,5 cm height,and it weights 10 grams.........................calculate the density!!!!!!!!!!!!!!!

2007-10-18 12:04:05 · 6 answers · asked by Anon E. Mous 3

If so, why? Also why can't you use transistors with a high beta? Will it cause distortion?

2007-10-18 12:00:40 · 2 answers · asked by Anonymous

I have a square pulse that I need to convert into a stable high. Preferably I would like it to be high until I send another pulse to reset. Is there a single IC that will do this?

2007-10-18 11:51:14 · 4 answers · asked by applemartini73 1

2007-10-18 11:41:03 · 2 answers · asked by TTU fan 2

2007-10-18 11:28:25 · 11 answers · asked by Greico P 2

Where does the air into the carburetor comes from? For a naturally aspirated system,air will pass to the air filter and goes into the carburetor, but then what governs the velocity of the air?

2007-10-18 11:12:33 · 2 answers · asked by eddy1234 1

2007-10-18 10:57:35 · 6 answers · asked by Greico P 2

I have a plastic water tank with an approximately 1 foot open hole at the top of the tank and a fitting at the bottom of the tank which is about 3 inches in diameter at the max. I need to heat the water to about 30-40 degree celsius. I was wondering how this could be done.

2007-10-18 10:56:05 · 5 answers · asked by Jeremy L 1

I'm just beginning my studies in Electronics Engineering Technology and I have an assigment to research digital multimeter. Any experienced electronics engineers out there to help. Thank You!!

2007-10-18 10:15:52 · 4 answers · asked by Supa_Sexy1 2

I am working on a large sculpture made from scrap metal and it get very wet through condensation and dew overnight. Is this dangerous.

2007-10-18 09:40:42 · 6 answers · asked by Anonymous

how else to I pull pins out of a dsub connector? I don't have an extraction tool. Any tips?

2007-10-18 07:53:02 · 5 answers · asked by samwarr 2

2007-10-18 07:07:35 · 1 answers · asked by Anonymous

I cannot find an example in the book like this. Say you have a BJT transistor amplifier (common emitter) configuration WITHOUT the bypassed emitter resistor. When you take into the account the parasitic capacitance, you use the miller effect to drop Ccb down to the base to ground and the collector to ground. If the emitter resistor WAS bypassed, you would add these miller-capacitances to their closest parasitic capacitance since they're in parallel, right? Well since the emitter resistor ISN'T bypassed, you should treat the two separate to find the break frequencies (1/(2*pi*C*Rthevenin)) since they're not in parallel and you can't combine. IS THIS CORRECT? BY "THIS" I MEAN TREATING THE MILLER AND THE PARASITIC CAPACITANCE SEPARATELY AND GETTING MULTIPLE BREAK FREQUENCIES?

2007-10-18 06:29:24 · 3 answers · asked by rrossorr 3

I really like math and science so I figured being a chem. eng. is perfect! But what exactly does that entail? What can you do with a degree in chem. eng. and what exactly is it?

2007-10-18 06:07:22 · 2 answers · asked by Anonymous

2007-10-18 04:59:52 · 3 answers · asked by k k 1

2007-10-17 22:26:41 · 7 answers · asked by manikantan s 1

2007-10-17 22:00:49 · 4 answers · asked by Anonymous

hey i am a 13 year old kid, i recently watched a vid on little robots, that were powered by solar energy, and moved towards light. I have no previous experienc with robotics, it a hoddy that i think i want 2 pick up. So if anyone knows a simple, and cool robot i can build out of house hold items batteries, wires stuff you can buy from ace and walmart. Please, i am really interested!

2007-10-17 18:36:00 · 4 answers · asked by ernest t 2

Clearly speaking, why are electromagnetic waves are used instead of audio/sound waves to transmit the radio station?
We had the discussion about this in our ECE class but somehow i forgot the exact answer.

2007-10-17 18:22:24 · 5 answers · asked by milkyandromeda 1

2007-10-17 18:06:06 · 5 answers · asked by Chris 619 1