Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Utilizing three or more electrode solid-state device
Reexamination Certificate
2004-07-14
2008-03-04
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Utilizing three or more electrode solid-state device
C327S456000, C318S430000, C318S474000
Reexamination Certificate
active
07339414
ABSTRACT:
The invention relates to a method and a circuit arrangement for monitoring the mode of operation of one or more load circuits, especially of a domestic appliance, which contains a controlled semiconductor switch, such as a triac, and an electric consumer. Said switches are supplied by at least one alternating voltage source that supplies an alternating voltage including positive and negative voltage half-waves. The invention is characterized in that the currents flowing through all controlled semiconductor switches (T1, T2) and the electric consumers (R1, R2) are guided through a common low-impedance precision resistor (Rm). The respective voltage drop occurring over the low-impedance precision resistor (Rm) is separately evaluated with respect to the amplitudes of the positive and negative voltage half-waves.
REFERENCES:
patent: 4109308 (1978-08-01), Rödel
patent: 4464661 (1984-08-01), Redmond
patent: 5300917 (1994-04-01), Maue et al.
patent: 5539320 (1996-07-01), Vetter et al.
patent: 5945802 (1999-08-01), Konrad et al.
patent: 6593767 (2003-07-01), Tanaka et al.
patent: 2 150 888 (1973-04-01), None
patent: 37 40 482 (1989-06-01), None
patent: 42 27 827 (1994-02-01), None
patent: 43 41 425 (1995-06-01), None
patent: 840 747 (1981-06-01), None
Greenberg Laurence A.
Locher Ralph E.
Stemer Werner H.
Wells Kenneth B.
LandOfFree
Method and circuit arrangement for monitoring the mode of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and circuit arrangement for monitoring the mode of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and circuit arrangement for monitoring the mode of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3966816