Sunday, June 26, 2011

CrazyEngineers Forum

CrazyEngineers Forum

Calculating the power output of a variable speed fan

Posted: 26 Jun 2011 01:57 PM PDT


Just looking for some help with this,

I have an axial flow fan connected to a variable speed drive set to 50hz, what I need to know is how to calculate the power output of the fan at any given frequency between 0 - 50hz.

Details of the fan are as follows:

3phase 400v

P=2900W
I= 4.9A
n= 1350min-1

Accutron 214 coil

Posted: 26 Jun 2011 11:56 AM PDT

Hello, I have a few accutron 214 coils that are open and I want to know if is possible using new wire to recoil the broken ones? What I think is that using some type of new wire may be possible to obtain the original function with less wire The original coil have about 8.000 turns and the wire is thinner than the human hair and was design at the end of 1950. There are a lot of business in find a way to recoil the original ones because they are difficult to find and they cost about $100.00 ore more for the two coils in each watch. Please let me know any additional information you need.
Thanks and sorry for my English
EJS

problem in program loading

Posted: 26 Jun 2011 10:22 AM PDT

Helo,
anybdy thr pls help, am having a prblm with my miniprjt, itz cald GSM based accident detection. am uisng NXP phillips s 89v51rd2, n using a flasher called Flash Magic. while am loading the hex code, a dialogue box says this " try to reduce the baud rate".i hd successfully loaded the prgm to the same ic once with baud rate 9600. i tried loading by increasing and decreasing the baud rate. bt having the same prblm again. somebody pls help me:(

Hi all.......just joined...

Posted: 26 Jun 2011 06:05 AM PDT

heard today about CE and decided to join.......very new to this .......will get used to it soon...thanks.......sachin

Interested in making yacht

Posted: 26 Jun 2011 03:08 AM PDT

I'm interested in making a yacht, any ideas?

Solar panels on factory roof for electricity generation

Posted: 26 Jun 2011 03:04 AM PDT

I am living in a tropical country with maximum sunlight, I have a large factory roof. I am interested in harnessing the sunlight for electricity generation for purpose of lighting and any other possible use.

Would like to know the feasibility & if anybody has any ideas or experiences in this context?

Dumb lift (small lift for small materials) for household usage.

Posted: 26 Jun 2011 02:57 AM PDT

I am interested in building and installing a small lift (also known as dumb lift) in my house for vertical transportation of house hold materials such as:- books, groceries as well as materials for house hold usage and consumption.

Would like to know if anybody has made and installed such an elevator lift, and how to make it?

low cost housing

Posted: 26 Jun 2011 02:48 AM PDT

hosuing techniques in india, for larger masses

solutions to raise the truck with10 wheels at first floor level

Posted: 26 Jun 2011 02:45 AM PDT

solutions to raise the truck with10 wheels at first floor level, with a slope gradient of 1:6.5, up to height of 3.0meters, amd length of 65 feet.

Bluetooth Data Acquisition Project HELP!

Posted: 26 Jun 2011 01:40 AM PDT

Hi, I have this situation. I have to design a hardware that senses other bluetooth devices and stores the MAC ID's of the detected devices along with the time of detection. This device eventually will be installed on roads to acquire data about the number vehicles travelling. Now from where should i start this project?

A Bluetooth dongle will be used to sense the devices and from there on please tell me how to move about in this project. Just the idea will be enough for me to take over.

Thanks in advance. Cheers.

Any one heard about combined heat and power generation

Posted: 25 Jun 2011 11:06 PM PDT

"An new method of electricity generation"

Readmore

Another excellent topic for robotics"Ware house management using robotics"

Posted: 25 Jun 2011 10:58 PM PDT

Read more on the seminar here

Robotics for medical applications

Posted: 25 Jun 2011 10:55 PM PDT

For detailed description click here This will be a nice topic for robotic seminars

iPhone 5 Launching In September Says China Mobile Employee

Posted: 25 Jun 2011 07:11 PM PDT

iPhone 5 will be introduced in September 2011, says China Mobile employee. Apple's current CEO (acting) Tim Cook was busy holding meetings with senior China Mobile executives recently. One of the employees, unidentified, revealed that Apple would release the next iPhone in coming September.

No information about the hardware and software specs was revealed. :confused:
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