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Primary Examiner: Mullins, James B.
Assistant Examiner:
Attorney: LaRue; Adrian J.

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Title: Fast recovery limiting and phase inverting amplifier

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Claims: The invention is claimed in accordance with the following:

1. A fast recovery signal limiting amplifier, comprising:

a paraphase amplifier;

a current source for providing current to said paraphase amplifier; and

means for limiting the output of said paraphase amplifier, said means for limiting defining a pair of opposite conductivity transistors connected in common base configuration.

2. A phase-inverting shunt feedback amplifier, comprising:

a paraphase amplifier for receiving an input signal and providing first and second signals;

a differential amplifier responsive to said first and second signals for providing different signals;

current source means for providing current to said differential amplifier;

means for detecting common mode signals and being operatively connected between said differential amplifier and said current source means to control said current source means; and

feedback means for controlling the range of the feedback amplifier and being operatively connected between said paraphase amplifier and said differential amplifier.

3. The amplifier according to claim 2 wherein said means for detecting common mode signals define a control circuit including a transistor for controlling the magnitude of current in said current source means.

4. An amplifier, comprising:

means for converting an input signal voltage to a signal current that is linearly related to said signal voltage between two defined current limits, said means for converting including a pair of opposite conductivity transistors connected in common base configuration; and

means for converting said signal current to a plurality of utilization voltages, said means for converting including common mode signal detecting means and feedback means for controlling the range of said utilization voltages.

Other info:

Inventors: Crosby, Philip Stephen (Portland, OR, US)

Application Number: 506382
Filing Date: 1974-09-16
Publication_date: 1976-04-06
Assignee: Tektronix, Inc. (Beaverton, OR)
Primary Class(es): 330/258 327/327, 330/260, 330/301
Other Classes:
US Patent Ref:

3370245	Feb, 1968	Royce et al.	330/30.
3440554	Apr, 1969	McGraw et al.	330/30.
3582802	Jun, 1971	Weekes et al.	330/30.
3622902	Nov, 1971	Thomas	330/30.
3676789	Jul, 1972	Bray	330/30.
3735150	May, 1973	Harris	330/30.

Other Refs: Other References: werner, "Transistor Clipper," RCA Technical Notes, RCA TN No. 732, Jan. 1968.