Circuit arrangement for the switchable amplification of...

Details Circuit arrangement for the switchable amplification of... Circuit arrangement for the switchable amplification of...

2007-02-27

2007-02-27

Shingleton, Michael B (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including plural amplifier channels

C330S12400D, C330S278000

Reexamination Certificate

active

10959303

ABSTRACT:
Circuit arrangement for the switchable amplification of variable electrical signals having at least one signal input and a signal output. A switchable amplifier is present between signal input and signal output and is provided with an input, with an output and with a negative feedback path having at least one resistor between input and output. The circuit arrangement further comprises a voltage source, the polarity of which can be reversed by a switching element. In this case, the negative feedback path has a switchable bypass connected in parallel with the at least one resistor. The signals fed in at the amplifier input are furthermore to be fed to the amplifier output in amplified fashion via a first signal path or in unamplified fashion via a second signal path depending on the polarity of the voltage source.

REFERENCES:
patent: 5486791 (1996-01-01), Spitalny et al.
patent: 2003/0124999 (2003-07-01), Parssinen et al.
patent: 0 797 873 (1997-01-01), None
German Search Report mailed Jun. 23, 2006.

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