US PATENT SUBCLASS 324 / 120
.~ With voltage or current conversion (e.g., D.C. to A.C., 60 to 1000)


Current as of: June, 1999
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324 /   HD   ELECTRICITY: MEASURING AND TESTING

76.11  DF  MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE {46}
120.~ With voltage or current conversion (e.g., D.C. to A.C., 60 to 1000)


DEFINITION

Classification: 324/120

(under subclass 76) Subject matter having means to transform the voltage or current to be measured into a different current or voltage and having means to measure said different voltage or current.

(1) Note. This subclass contains, for example, systems where a DC voltage is changed into an AC voltage which is measured as an AC voltage, systems wherein the input voltage is converted into a pulse voltage and systems wherein the input voltage is converted from one frequency into another frequency.

SEE OR SEARCH THIS CLASS, SUBCLASS:

118, for this subject matter wherein the input voltage or current is first modulated and then demodulated.

119, for this subject matter having a rectifier.

SEE OR SEARCH CLASS

340, Communications: Electrical, 870.01+, for telemetering systems having no significant measuring, testing or sensing of the condition to be telemetered. Some telemetering systems utilize current conversion means. Note indented subclasses 870.19+ for telemetering systems in which the value of the condition is represented by a pulse code.