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Class 178/49 - Superposed current


Subclass of Class 178 - Telegraphy
Definition: Composite systems and combinations of two or more distinct
No. of patents: 2
Last issue date: 05/28/1991


NumberTitleIssue Date
5019730Information separation device
An information separation device having a transformer operating as a separating filter to separate transmitted direct current power and alternating voltage information. The transformer has at least two windings on a first side holding power in reserve. Be...
05/28/1991
4734919Circuit for serial data communication and power transmission
A circuit for serial data communication and power transmission between a main controller and a sub-station along two balanced transmission lines. The circuit includes a power supply for providing a DC voltage to the sub-station along the transmission line...
03/29/1988
 
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