I m working on my school physics projectn me n the team had coiled some copper wire on the bobbinsbut when connect to power supply.both sides of solenoid r attracted 2 both N n S pole of the magnetn this is differed from what we expectedthat the solenoid should be repeled away from 1 poleIs tat bobbin is not suitable? Can any1 suggest me the materials tat r more suitable?? What about the materials 2 be used as the core 2 increase the magnetic field strength? Maybe just smth common n easy 2 findThxI appreciate any suggestions tat u guys give
in the beginning determine you have the percentprogramed for digital in undemanding terms. some like the 16F kin have many pins that default to analog. ( i could would desire to look up the command as I certainly have set up a block software for all my undemanding setup and that i've got been copying and pasting for ever.) next is to connect an delivered approximately any empty pin. and then write a start up sequence that fires the the led in some trend. I used something like, on for 500ms off for 250ms. i could have it flash that 3 or 4 situations. then pause till now it is going into substantial software. this could prepare you if the percentis hitting brownout whilst the relay fires causeing you to think of this equipment is undesirable, yet its relatively purely beginning many times and over. i think of you would be wanting to characteristic some ability caps into the mixture to end this brown out. you will desire to have like a 250uf on the flexibility source and that i think of yet another at relay. in case you like, digital mail this equipment and that i will seem it over, I spent years programing this issues to do each and every thing from flashy lights furniture to severe end protocols. interior the destiny in case you going ask approximately p.c you will desire to provide the device call as there are a pair of thousand p.c
And make sure the coil only turns in one direction along the length of the Iron core. Ferromagnetic materials are better than para- or diamagnetic. EDIT: Okay a list of Ferromagnetic metals are Cobalt Iron Nickel Manganese You want to use these materials for the core of the soleniod The soleniod works on the equation F BIL B magnetic field strength I Current L Length of the wire and thanks to ohms law, if you wish to increase the strength of the field you increase the current which can simply be done by introducing a resistor into the circuit with the soleniod. This must be in series to the soleniod ie; directly after it.
The problem is that the strength of the magnetic field from your bar magnet is too weak compared to the solenoid's magnetic field. The solenoid is remagnetizing the bar magnet, so it is acting more like a plain piece of steel. Solution, get a stronger bar magnet or else weaken your solenoid by reducing the electric current. The resulting forces will be quite weak - try hanging the bar magnet from a string so it can move more freely. **************How are you powering the solenoid? Batteries? How many and what size? Power supply? How many Volts and Amps?
