Recent content by thomsonm

After talking with some friends at uni we realized that it's just the IDE I was using that was the problem. (Silverfrost plato) After using the universities software it works fine. Thanks for the speedy response once again!

As the title suggests, there's more I'd like to ask: I want to allow users to input a file name for the program to open: ... CHARACTER*40 filename ... OPEN(21,FILE=filename,STATUS='OLD') ... Somehow this doesn't work, it just says the file doesn't exist. Any thoughts?

That code worked like a charm, thanks!

I've been given a data file laid out as such: heading1 heading2 heading3 x1 y1 z1 x2 y2 z2 x3 y3 z3 .etc. where x=integer, y,z=real I need to count the number of lines to allocate x, y and z their sizes. My first attempt looked like: ... OPEN(21, FILE='data.dat', STATUS=OLD)...

I'm need 10A to get the right magnetic field.

I've just calculated the resistance of a solenoid I'm making, but it seems far too low. 240 turns of 1.6mm wire, 30 turns per row, 8 rows deep. total length of wire (L) = 21.96m area of wire (A) = pi * (0.0008)^2 m^2 resistivity of copper (rho) = 1.6*10^-8 ohms m^-1 R = (rho * L) / A...

Yeah that's fantastic, but I'm really just looking for a link to a website where I can buy the diode in question, I'm not looking for alternatives. Thanks for the response, but it's more than I needed

I'm trying to make a circuit for an electromagnet so that it pulses when a switch is triggered. Obviously once it's pulsed the magnetic field will collapse and create a back EMF. The component I'm trying to save is a microchip that I'm using as a switch.

Hey, I'm trying to find a suitable diode to protect against some back EMF in my circuit, but I don't know much about them and so I'm having a really hard time finding one. If someone could look at what i need and then possibly send me a link i'd be so grateful. Requirements: back EMF = 137mV...

No you've got it right danger, the track is a very basic array of neodymium magnets, creating a magnetic field. By placing a superconducting disc in the magnetic field, the miessner effect causes it the expel all flux, creating a magnetic pressure and thus countering gravity. The only...

@Danger, thanks for the welcome =] I guess a speed of say, 0.3m/s would be about right, but then I'm simply left with a resistive force, something that's constantly slowing the object. How do I work out how much of a 'kick' i need to give it at the start to make sure it reaches the end...

I'm currently working on my final year project which is building a maglev track for open days, and I'm having trouble calculating what force i need to apply to the train to make it complete one circuit of the track. Since it's maglev, friction ~0N Air resistance = -0.5*Rho*A*Cd*v^2 =...