专利名称：TRAP CIRCUIT发明人：GOSUI KAZUHIRO申请号：JP22874385申请日：19851016公开号：JPS6290013A公开日：19870424
摘要：PURPOSE:To decrease number of components and to utilize effectively thepackaging space by utilizing a transformer used for a turn circuit and forming a seriesresonance circuit with the inductance of the 1st winding and a capacitance of thecapacitor. CONSTITUTION:A TCS transformer 1 is connected to a collector of a highamplification transistor (TR) 2. The 1st winding 11 of the transformer 1 is connected to acapacitor 4 and the 2nd winding 12 has a tap, which is connected to an output terminalOUT. In the transformer 1, the trap circuit is formed by L and C by putting in/out awinding 11 wound on a common iron core with the winding 12 via the core. Then the LCseries resonance circuit attenuates the frequency other than the prescribed frequency.Then one tax transformer is used and the inductance of the 1st winding 11 and thecapacitance of the capacitor 4 form a series resonance circuit. Then in comparison withthe provision of an independent series resonance, number of components is one and themounting space is utilized effectively.
申请人：FUJITSU LTD
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