Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate
2005-12-20
2005-12-20
Patel, Paresh (Department: 2829)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
C324S500000
Reexamination Certificate
active
06977518
ABSTRACT:
An electrical leak detecting apparatus for detecting electrical leak of a power supply device includes two voltage division elements which have an identical impedance value and are connected to each other in series between input terminals or output terminals of a DC/AC conversion circuit of the power supply device, a detection element which has one end connected to a junction of the voltage division elements, a capacitor which is inserted between the other end of the detection element and ground and a decision member which receives a voltage drop across the detection element as a detection signal and processes the detection signal so as to judge occurrence of the electrical leak.
REFERENCES:
patent: 6002215 (1999-12-01), Yamashita et al.
patent: 6246248 (2001-06-01), Yamagishi
patent: 6320389 (2001-11-01), Tamesue et al.
patent: 6833708 (2004-12-01), Furukawa
patent: 57-119263 (1982-07-01), None
patent: 60-262069 (1985-12-01), None
patent: 11-218554 (1999-08-01), None
patent: 3307173 (2002-05-01), None
English Language Abstract of JP 3307173.
English language Abstract of JP 57-119263.
English language Abstract of JP 60-262069.
English language Abstract of JP 11-218554.
Higashihama Hirotada
Minami Yoji
Saito Toshiaki
Soshin Koji
Usui Hisashi
Greenblum & Bernstein P.L.C.
Matsushita Electric & Works Ltd.
Patel Paresh
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