ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
H03H0007120000 Bandpass or bandstop filters with adjustable bandwidth and fixed centre frequency (H03H0007090000 takes precedence;automatic control of bandwidth in amplifiers H03G0005160000) 1
H03H0007130000 using electro-optical elements 1
H03H0007180000 Networks for phase shifting 1
H03H0007190000 Two-port phase shifters providing a predetermined phase shift, e.g. "all-pass" filters 1
H03H0007200000 Two-port phase shifters providing an adjustable phase shift 1
H03H0007210000 providing two or more phase shifted output signals, e.g. n-phase output 1
H03H0007240000 Frequency-independent attenuators 1
H03H0007250000 comprising an element controlled by an electric or magnetic variable (H03H0007270000 takes precedence);; 1
H03H0007270000 comprising a photo-electric element 1
H03H0007300000 Time-delay networks 1
H03H0007320000 with lumped inductance and capacitance 1
H03H0007340000 with lumped and distributed reactance 1
H03H0007380000 Impedance-matching networks 1
H03H0007400000 Automatic matching of load impedance to source impedance 1
H03H0007420000 Balance/unbalance networks 1