32results about How to "Minimizing influence of noise" patented technology

A power converter (1) includes: planar semiconductor modules (10) each having a resin sealing part (16) in which a semiconductor element (11), conductive members (12, 13, and 14), and a signal terminal (15) are sealed with a resin; a cooler (20) that holds the plurality of semiconductor modules (10) in a laminated manner; and a cover (30) that covers the semiconductor modules and the cooler, wherein at least a part of the resin sealing part (16) and the cooler (20) are supported by support media (41 and 42) that extend from the cover (30) so that facing parts of the resin sealing part and the cooler with respect to the cover (30) is positioned in proximity to the cover, and the conductive members and the signal terminal protrude from the resin sealing part in a direction away from the cover.

A wiring structure for a head suspension is provided. The head suspension has a head to write and read information to and from a recording medium, a load beam to apply load onto the head, a device arranged on the head and operating on low-frequency signals to achieve a function other than the information write / read function at the head, and a flexure attached to the load beam and supporting the head, the flexure including a base material made of a conductive thin plate and a base insulating layer formed on the base material. The wiring structure has a write wiring and a read wiring formed on the base insulating layer and connected to the head, a device wiring formed on the base insulating layer and connected to the device, an intermediate insulating layer on the base insulating layer. The device wiring is formed wider than the read wiring and includes positive / negative wires that are laid one on another with the intermediate insulating layer interposed between the positive / negative wires.

The present invention discloses a wavelength-division multiplexing passive optical network (WDM-PON) capable of high-bandwidth transmission for optical signals by using modulation format having high spectral efficiency. The WDM-PON according to the present invention provides a larger capacity and higher bandwidth transmission economically (at lower costs) by using a modulation format where spectral efficiency (a transmission bit number per a unit band width) is high, while using a low noise part of a light source.

In some embodiments, a capacitance discrimination circuit includes first and second capacitors, a comparator configured to compare a first voltage of the first capacitor and a second voltage of the second capacitor, a counter circuit configured to perform a count operation based on a comparison result of the comparator, a charge circuit configured to charge the first and second capacitors, and a control circuit configured to control the charge circuit so as to charge either the first capacitor or the second capacitor based on the comparison result of the comparator. The capacitance discrimination of the first and second capacitors is performed based on count values of the counter circuit. The capacitance discrimination circuit preferably includes a discharge circuit to discharge electric charges stored in the first and second capacitors in accordance with a discharge signal from the control circuit.