ดาวน์โหลด

ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ

รหัส / code คำอธิบาย / code name Version
H03F0003700000 Charge amplifiers 1
H03F0003720000 Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal 1
H03F0005000000 Amplifiers with both discharge tubes and semiconductor devices as amplifying elements 1
H03F0007000000 Parametric amplifiers (devices or arrangements for the parametric generation or amplification of light, infra-red or ultra-violet waves G02F0001390000) 1
H03F0007020000 using variable-inductance element; using variable-permeability element 1
H03F0007040000 using variable-capacitance element; using variable-permitivity element 1
H03F0007060000 with electron beam tube 1
H03F0009000000 Magnetic amplifiers 1
H03F0009020000 current-controlled, i.e. the load current flowing in both directions through a main coil 1
H03F0009040000 voltage-controlled, i.e. the load current flowing in only one direction through a main coil, e.g. Logan circuits (H03F0009060000 takes precedence);; 1
H03F0009060000 Control by voltage time integral, i.e. the load current flowing in only one direction through a main coil, whereby the main coil winding also can be used as a control winding, e.g. Ramey circuits 1
H03F0011000000 Dielectric amplifiers 1
H03F0013000000 Amplifiers using amplifying element consisting of two mechanically- or acoustically-coupled transducers, e.g. telephone-microphone amplifier 1
H03F0015000000 Amplifiers using galvano-magnetic effects not involving mechanical movement, e.g. using Hall effect 1
H03F0017000000 Amplifiers using electroluminescent element or photocell 1
จำนวนรหัสข้อมูล 15 จาก 73902