84.30.-r Electronic circuits (for integrated circuits, see 85.40, for microwave circuits, see 84.40.D) ( 0 Dok. )

• 84.30.Bv Circuit theory (including computer-aided circuit design and analysis) ( 0 Dok. )
• 84.30.Jc Power electronics; power supply circuits (see also 84.70 High-current and high-voltage technology) ( 0 Dok. )
• 84.30.Le Amplifiers ( 0 Dok. )
• 84.30.Ng Oscillators, pulse generators, and function generators ( 0 Dok. )
• 84.30.Qi Modulators and demodulators; discriminators, comparators, mixers, limiters, and compressors ( 0 Dok. )
• 84.30.Sk Pulse and digital circuits ( 0 Dok. )
• 84.30.Vn Filters Special purpose circuits, see 07.50.E ( 0 Dok. )