Amplifier device with a selectable active or passive...

Details Amplifier device with a selectable active or passive... Amplifier device with a selectable active or passive...

2005-01-18

2005-01-18

Nguyen, Khanh Van (Department: 2817)

Amplifiers

Combined with automatic amplifier disabling switch means

C330S151000

Reexamination Certificate

active

06844778

ABSTRACT:
An amplifier arrangement comprises an active amplification element arranged between a first and a second contact within a first signal path. A signal fed in at the first contact is amplified in the amplification element. Furthermore, a controller for a variably operation of the amplification element, as well as a passive second signal path. The second signal path, which is arranged parallel with the first signal path and bypasses the first signal path, is also contained therein. An ultrasound device contains such an amplifier arrangement.

REFERENCES:
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patent: 6127886 (2000-10-01), Khabbaz et al.
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patent: 6591087 (2003-07-01), Oda
patent: 6621341 (2003-09-01), Shifrin
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patent: 197 54 785 (1999-06-01), None
patent: 199 16 902 (2000-10-01), None
Piezoxide-Wandler v. J. Koch, 1973, Valvo Gmbh Hamburg, S. 157 und 158 Nr. 1.

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