Section H: Electricity

Classes

Subclasses

802

Main Groups

10,615

IPC

32,161

CPC

Description

Section H encompasses all technologies and applications related to electrical and electronic systems, devices, and processes. It covers the generation, conversion, transmission, distribution, and utilization of electrical energy, as well as electronic components, circuits, and telecommunications. This section includes power generation from various sources, electric motors and machines, lighting technologies, heating applications, control systems, and the broad field of electronics and information transmission. Adjacent sections address mechanical engineering (F), physics-based technologies (G), and fixed structures (E).

Visualizations

Size of each class by number of subgroups

Classes in section H by descendant count
Class	Title	Descendants
H01	ELECTRIC ELEMENTS	9,850
H02	GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER	2,475
H03	ELECTRONIC CIRCUITRY	4,484
H04	ELECTRIC COMMUNICATION TECHNIQUE	9,561
H05	ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR	2,265
H10	SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR	3,680
H99	SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION	2

Child Classifications

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H01 ELECTRIC ELEMENTS
H02 GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H03 ELECTRONIC CIRCUITRY
H04 ELECTRIC COMMUNICATION TECHNIQUE
H05 ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
H10 SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
H99 SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION