Removable cartridge technology
Unfortunately, despite repeated attempts by various manufacturers to launch a reliable device with removable media on the market, none of them have yet managed to deceive the laws of nature.…

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Zip Drive Frequently Asked Questions
What are the models of Zip drives? Currently, there are 2 main types of Zip drives: Zip-100 (100 MB removable disk capacity) and Zip-250 (250 MB removable disk capacity). Zip-100…

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Information Disaster April 26
In April, the biggest problem of the month related to computers can rightly be considered the epidemic of the Win95.CIH virus - Chernobyl. Everyone is used to the presence of…

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Design Features of the Zip Drive Head Drive

Unlike HDDs, the Zip drive uses a linear drive with a moving coil. There are two types of drive mechanisms for moving coil heads: linear and rotary. These types differ only in the physical arrangement of magnets and coils.

The drive with a moving coil is an electromagnet. Its design resembles that of a conventional loudspeaker. When a current of a certain polarity flows, the coil moves in or out of the gap of the permanent magnet. In Zip, a movable coil is rigidly connected to a block of heads and is placed in the field of a linear permanent magnet. The coil and magnet are not interconnected in any way: the movement of the coil is carried out only under the influence of electromagnetic forces.

The linear drive used in the Zip drive moves the heads in a straight line, strictly along the radius line of the disk. Its advantage is that when it is used, there are no azimuthal errors characteristic of a rotary drive, but there is a significant drawback: the head block in such a mechanism must be massive enough, and to control it, you need, accordingly, massive enough and, most importantly , powerful, engine.

Due to its “heavy weight category”, and, accordingly, the inability to work fast enough, the linear drive cannot be used in modern HDDs.

In the production of hard drives, a rotary drive is used, which works on the same principle as a linear one, but in it the ends of the head levers are attached to the moving coil. When the coil moves relative to the permanent magnet, the head movement levers rotate, moving the heads to the axis or to the edges of the disks. Due to its low weight, such a design can move with great acceleration, which can significantly reduce the data access time. The rapid movement of the heads is facilitated by the fact that the shoulders of the levers are made different – the one on which the heads are mounted has a large length.

The probability of failure of devices where a massive linear drive is used is much higher than that of devices with a rotary drive (respectively, the use of a linear drive in a Zip drive can also cause a malfunction such as a breakage of heads).

Golden Disks and IDE
The problem of recording "golden" discs has already been covered on our website (as well as in the journal CHIP, No. 8, 1999). However, the problems continue. Only, if earlier…

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IDE Interface Features
The main requirement of the recording device to the interface is the ability to continuously transmit data to it during the recording process. Requirements for the speed of receipt of…

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Mass Share Against Iomega
On September 10, 1998, in the New Castle County Supreme Court, Delaware, on behalf of all Iomega Zip drive owners, a campaign of dissatisfied consumers began that went beyond national…

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What is worse than the "golden" wheels?
The prerequisites for the fact that the “golden” discs are worse than the “aluminum” ones are laid down in the recording technology itself. Standards for compact discs provide that the…

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