Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Unwanted signal suppression
Reexamination Certificate
2008-05-27
2008-05-27
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Unwanted signal suppression
C333S181000
Reexamination Certificate
active
07378900
ABSTRACT:
EMI filter20includes input terminal Vin, output terminal Vout, resistor component R1and diodes D1and D2. Resistor component R1is composed of polycrystalline resistor component Rp and ring resistor components R11and R12. Polycrystalline resistor component Rp is connected between input and output terminals Vin and Vout. Ring resistor components R11and R12are provided on one and the other sides of polycrystalline resistor component at a prescribed distance, respectively. Further, diode D1has cathode and anode electrodes connected to input terminal Vin and reference potential Vss, respectively. Likewise, diode D2has cathode and anode electrodes connected to output terminal Vout and reference potential Vss, respectively. Ring resistor components R11and R12are rectangular in shape to electromagnetically couple to polycrystalline resistor component Rp. When a high frequency signal is applied to input terminal Vin, an electric current flowing through polycrystalline resistor component Rp generates magnetic fields so that ring resistor components R11and R12electro-magnetically induce an electric current.
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patent: 6304126 (2001-10-01), Berthiot
patent: 7088592 (2006-08-01), Su et al.
patent: 2005-167095 (2005-06-01), None
patent: 2005-167096 (2005-06-01), None
patent: 2005-228807 (2005-08-01), None
“2-Line EMI-Filter with ESD-Protection”, Technical document of Vishay Semiconductors product GTF701-HS3, Document No. 85827, Rev 1.3, Jul. 4, 2005, p. 1 and 3.
U.S. Appl. No. 11/537,842, filed Oct. 2, 2006, Inoue.
U.S. Appl. No. 11/563,848, filed Nov. 28, 2006, Inoue.
“2-Line EMI-Filter with ESD-Protection”, Technical document of Vishay Semiconductors product GTF701-HS3, Document No. 85827, Rev. 1.3, Jul. 4, 2005, pp. 1and 3.
Kabushiki Kaisha Toshiba
Le Dinh T.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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