Title: Wideband DC current amplifier

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

1. A current amplifier, comprising:

a first and second transistor means, each of said transistor means having a base, a collector, and an emitter;

means directly connecting the collector of said first transistor means to the base of said second transistor means, said means having a resistive value of substantially zero ohms;

first and second resistor means serially connected between the emitters of said first and second transistor means, respectively, and a reference potential;

third resistor means serially connected between the base and collector of said first transistor means, wherein the ratio of said first resistor means to said second resistor means plus unity equals the ratio of said third resistor means to said second resistor means;

means for applying input current to the collector of said first transistor means; and

means for applying a repeated input current to the collector of said second transistor means.
Other info:

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

Application Number: 499824
Filing Date: 1974-08-23
Publication_date: 1976-02-17
Assignee: Tektronix, Inc. (Beaverton, OR)
Primary Class(es): 330/288 327/535
Other Classes:
US Patent Ref:

3364434	Jan, 1968	Widlar	330/22.
3660694	May, 1972	Lucas	330/22.
3706852	Dec, 1972	Angus	330/141.

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