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US 3,939,434 AGranted
Wideband DC current amplifier
AssigneeTektronix, Inc.
InventorPhilip Stephen Crosby
Life of this patent
Estimating the term…
Abstract
A wideband DC current amplifier comprising a pair of transducers, the collector of the input transistor being connected to it's base through a compensating resistance and directly to the base of a second transistor is provided.
Claims1
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.
4 more elements
Dependencies are inferred from the claim text.