I have several BLDC motors used for the so called "Hoverboard" devices that children seem to love these days. I have taken a few of these apart and noticed that some of them use stranded magnet wire on the rotor teeth. For example, my particular motor uses a five strand 24 gauge wire arrangement...
Hi there,
Lets say I have a drum of radius (R). Attached to the drum is a spool of rope or cable of diameter (D) with a weight attached to the end. I wish to calculate the torque applied to the drum. The strands of the rope (or cable) are under tension on the outside of the bend radius while...
Hi there,
I have a BLDC that I would like to model as a generator. How might I determine the type of iron alloy used in the laminations so I can account for this in the model? I thought that maybe there would be an industry accepted method of determining the core material based on hysteresis...
BOTTOM LINE UP FRONT:
I need to roughly approximate the torque required from a rotating eddy current braking device in order to maintain a constant fall velocity of a suspended object on a pulley or cable drum.
LONGER DESCRIPTION:
I am working on a project where I have cable spooled around a...
Ok, so I'm building a completely adjustable, lightweight, field portable yagi antenna. As of yet, I am not utilizing any baluns or matching devices in order to reduce weight and decrease the complexity of tuning. I am utilizing a straight dipole for the driven element (it is not folded) and...
