| 摘要 |
PURPOSE: An amplifier is provided to improve a stability, and a gain by separating ballast resistances connected to an amplifying part into first resistances of a circuit protecting part and second resistance of an amplification controlling part. CONSTITUTION: An amplifier comprises an amplifying part(1';1'-1 - 1'-n) amplifying a supplied signal from the outer, a circuit protection part(2';2'-1 - 2'-n) controlling a current and a signal supplied from the amplifying part(1';1'-1 - 1'-n), an amplification controlling part(3';3'-1 - 3'-n) connected with the circuit protection part(2';2'-1 - 2'-n) assisting the control of the current and signal of the circuit protection part(2';2'-1 - 2'-n) so as to improve a power loss and a gain loss, a resistance part(4'4-1 - 4-n) respectively connected with the resistances(R1' - Rn') of the circuit protection part(2';2'- 1 - 2'-n) in series, and a resonance part(5;5-1 - 5-n) made of capacitors(C1 - Cn) connected parallel with the resistance part(4'4-1 - 4-n).
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