Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With bridge circuit
Patent
1998-08-11
2000-08-29
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With bridge circuit
327108, 327423, H02M 7162
Patent
active
061114588
ABSTRACT:
A power amplifier has an amplifier module and a pole changer module connected to the amplifier module, and during the operation of the power amplifier an amplifier current flows in a single current direction between the amplifier module and the pole changer module. The pole changer module optionally provides the amplifier current with unchanged current direction or with reversed current direction, as output current of the power amplifier. A nuclear spin tomography apparatus contains at least one such power amplifier. Such a power amplifier exhibits the required efficiency quantitatively and qualitatively, with low outlay and low cost.
REFERENCES:
patent: 4733342 (1988-03-01), Mueller et al.
patent: 5280196 (1994-01-01), Shinozaki
patent: 5537015 (1996-07-01), Karwath
patent: 5701176 (1997-12-01), Schmitt et al.
patent: 5939931 (1999-08-01), Noro
Siemens Aktiengesellschaft
Tra Quan
Tran Toan
LandOfFree
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