Abstract: A system and method for implementing an IQ generator includes a master latch that generates an I signal in response to a clock input signal, and a slave latch that generates a Q signal in response to an inverted clock input signal. A master selector is configured to provide a communication path from the master latch to the slave latch, and a slave selector is configured to provide a feedback path from the slave latch to the master latch. The foregoing I and Q signals are output directly from the respective master and slave latches without any intervening electronic circuitry.

Abstract: A system and method for implementing an IQ generator includes a master latch that generates an I signal in response to a clock input signal, and a slave latch that generates a Q signal in response to an inverted clock input signal. A master selector is configured to provide a communication path from the master latch to the slave latch, and a slave selector is configured to provide a feedback path from the slave latch to the master latch. The foregoing I and Q signals are output directly from the respective master and slave latches without any intervening electronic circuitry.

Abstract: A magnetic media storage system output circuit includes a filter for filtering an analog output signal from the storage media system before the analog output signal is provided to a read channel. Within the magnetic media storage system a read/write head reads data from a magnetic medium and provides an analog signal representing the data to an output circuit. The output circuit includes the filter for filtering the analog output signal and a pre-amplifier circuit for amplifying and transmitting the analog output signal to a read channel. Preferably, the filter has a linear frequency response and constant group delay below the cutoff frequency. Current on a write current control pin is used to control the cutoff frequency of the filter so that the cutoff frequency will track the data rate. An output signal from the storage media system output circuit is provided to a read channel.

Abstract: Ferrous sulphide is produced by forming a melt of a source of sulphur, suitably flotation grade iron pyrites, and a source of iron, suitably steel, in an electric induction furnace until reaction has ocurred, allowing a slag to form and removing the slag and pouring the residual ferrous sulphide product. Precautions are taken to protect the furnace circuitry from the pervasive effect of iron pyrites dust. The process may produce a ferrous sulphide product containing up to about 35% sulphur by weight with only low sulphur emission to the atmosphere.