Hi Guys,
I have am trying to minimise the EMI radiation from cables carrying power to magnetic coils.
I have read that shielded twisted pair cables with a drain wire where both the drain and the shield are connected to ground is the best approach - is this the case?
What types of connectors...
Thanks for the replies.
To answer Skogsgurra's question:
The voltages are up to 12V and the Current is up to 5A. Heat dissapation shouldn't be a problem as they intended usage would be for the MOSFET to turn ON over maybe 10-15ms, stay on for 5 seconds and then turn OFF over 10-15ms. As I said...
Hi,
I have a problem whereby I have a set of circuits for use with Helmholtz Coils that were initially designed to allow for rapid switching ON and OFF of the coils. The circuits are a High Side Power MOSFET and a H-Bridge configuration using Power MOSFETs. All the power MOSFETs are currently...
Hi,
I'm trying to use my printer port as a Digital Output Interface to a motor control IC. I want to use an opto-isolator circuit to protect my PC. However, the printer port outputs a 3.39 Volt High signal and a 0.1 Volt Low Signal - this is not enough to switch the opto-isolater by itself and...
Hi,
I've been asked to develop the electronics for the following problem,
-Provide a constant current to a coil that will generate a magnetic field.
-Provide the ability to either stop or reverse the current in the coil - using a TTL or CMOS logic.
I been looking around and I'm considering...
Hi all,
I'll quickly explain the project I'm working on and apologise for my lack of expierence in this area!
I'm hoping to design a mammographic phantom for QA in a hospital. I've done some work already and I know what matieral I'm going to use and what depth of matieral I need to mimic a...
jbartos,
I am concerned about the use of a relay as the motor must be able to accelerate and have differenct velocities. My understanding of a relay indicates that it can only be on or off -- is this correct ??
If possible could you detail more about the use of an ampflier and state any...
Thanks GusD,
Can anyone recommend a site or a place where I can learn more about relays and the possibility of using them.
Does anyone know if it is possible to build a circuit that will only involve the use of the relay when the motor is stopped and needs to be restarted ?
Thanks in...
electricpete and busbar -- thank you very much for your replies.
My apologies for failing to mention it is a DC Motor !
Can either of you shed some light on choosing an appropriate capcitor value -- as this seems the most suitable solution given the situation I'm in.
Thank You
Hello,
The situation I'm in is that I am using a Motor I/O Card to control two different motors. The card has two outputs to control the motors. The card is being used in conjunction with a PC104 card, which will control the motion of the motors through the Motor I/O Card.
The problem I have...
Thanks for the reply robotboy,
The spec sheet I had for the motor didn't provide the info, but I got a similiar motor with spec's I needed.
The reason I am modelling it in simulink is that I am also trying to model a fuzzy control logic block, and since matlab has a nice little fuzzy logic...
Hi,
I'm trying to model a DC Motor in simulink and I've got the expression I can't get certain values for this expression from the motor's datasheet.
Haas anyone else modeled a DC Motor in simulink and if so how did they do it or has anyone any good info. or links on this kind of stuff.
Thanks...
Hey,
I'm new to the forum and I'm having a small problem with guide. I'm trying to design a fairly complex GUI with it and everything is okay but for some reason I cannot get any axes components to not be hidden behind frame components.
I'm using frames just to group components and for...
