This standard describes parameters and methods of measurement suitable for the characterization of varactors intended for large-signal application. This will be done by reference to the parameters and methods prescribed in IEEE Std 318-1971, Trial-Use Guide on Solid-State Devices: Varactor Measurements, Part I -- Small Signal Measurements, where they are applicable, and by modification and supplementation of them where necessary for use with large-signal devices.

定价： 54元 / 折扣价： 46 元

This Standard applies to new valve construction and covers quarter turn manually operated metallic valves in sizes NPS 4 1â??4 and tubing sizes 1 1â??4 O.D. These valves are intended for indoor installation as gas shutoff valves when installed in aboveground fuel gas piping downstream of the gas meter outlet and upstream of the inlet connection to a gas appliance. The valves covered by this Standard are intended for service at temperatures between 32F (0C) and 125F (52C) at pressure ratings not to exceed 5 psi (0.34 bar). When so designated by the manufacturer, these valves may be installed for service outdoors and/or at temperatures below 32F (0C) and/or above 125F (52C).

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