| 摘要 |
PURPOSE: An amplifier is provided to improve a stability, a gain, and a power characteristic 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 a cut-off part(21) removing an unnecessary component among a current and a signal supplied from the outer, a circuit protecting part(22) controlling and supplying the current and signal supplied from the cut-off part(21), an amplification controlling part(23) supplying a source power to the circuit protecting part(22) and simultaneously operating to the circuit protecting part(22) so as to control the current and signal controlling degree, and an amplifying part(24) amplifying and transmitting the current and signal of the circuit protecting part(22). At this point, the operation of the amplifier depends on the separated resistances into the circuit protecting part(22) and the amplification controlling part(23).
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