Class 505/867 - Electric power conversion system: (Class 363)

Subclass of Class 505 - Superconductor technology: apparatus, material, process
Definition: Subject matter including means to perform a sequence or
No. of patents: 3
Last issue date: 07/12/1994

Number	Title	Issue Date
5329440	Device for converting a very-low-amplitude steady voltage signal into an alternating voltage signal This device for converting a very-low-amplitude steady voltage signal into an alternating voltage signal, of the type comprising a centre-tapped transformer (1) associated with a transistor (3,4) chopper (2), is characterised in that the transformer (1) a...	07/12/1994
5219831	Superconductive photoconductive-substance of the La-Cu-O system and a method for producing the same The disclosed substance has a general chemical formula of La2 -Cu1 -Oz, z being 3.84 to 4.00. The disclosed substance shows, at a temperature below 20° K., superconductivity, either potential or real, and the substance al...	06/15/1993
4195334	High-voltage DC transmission system and method A high-voltage DC transmission system and method is characterized by a minimum filtering requirement as to ripple as well as to surge and harmonics. Use of a superconducting generator directly coupled to rectifying means eliminates the requirement of a st...	03/25/1980

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