I have an ide laptop hard-drive from a Panasonic cf-28 toughbook. It has what looks like a coil wrapped around the hard drive. Can someone identify the component and its purpose? I have never seen anything like it. I read about the features of this computer, and watched some youtube videos, but I havent seen anyone point out the purpose of this part. Im not sure if it is coil to destroy the hd contents, or an antenna, or some weird shielding or what?...
the red an black wires coming off the ide connector attach to the metal film around the hard drive.
The hard drive is mini IDE 40 pin, but the connector the motherboard is a 50 pin JAE connector. The coil isn't connected to the IDE pins, but is connected to the JAE 50 pins, on pins 1,2 and 3,4 (grounds). This corresponds to the eject or audio pins, and grounds of the JAE connector. See this pin out diagram:
Clearly, this is not an audio device. The coil has a shunt resistor.