Ft doubler: Difference between revisions

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[[File:ft-doubler-circuit.jpg|thumb|350px|right|f<sub>t</sub> doubler circuit]]
[[File:ft-doubler-circuit.jpg|thumb|350px|right|f<sub>t</sub> doubler circuit]]
The '''f<sub>t</sub> doubler circuit''' is a transistor amplifier topology, invented by [[Carl Battjes]],
The '''f<sub>t</sub> doubler circuit''' is a transistor amplifier topology, invented by [[Carl Battjes]],
that has a current gain of 2 even at the transit frequency of the transistors that are used in the circuit.
that has a current gain of 2 even at the transition frequency of the transistors that are used in the circuit.


It is used heavily in Tektronix instruments and several Tektronix integrated circuits implement this approach.
It is used heavily in Tektronix instruments and several Tektronix integrated circuits implement this approach.


* [[Patent US 3633120A|US Patent 3,633,120]] Filed Sept. 16, 1970 / Granted Jan. 4, 1972
{{PatentLinks|Ft doubler}}


==Implemented in==
==Implemented in==

Latest revision as of 03:25, 8 June 2024

ft doubler circuit

The ft doubler circuit is a transistor amplifier topology, invented by Carl Battjes, that has a current gain of 2 even at the transition frequency of the transistors that are used in the circuit.

It is used heavily in Tektronix instruments and several Tektronix integrated circuits implement this approach.


Patents that may apply to Ft doubler

Page Title Inventors Filing date Grant date Links
Patent US 3633120A Amplifier circuit Carl Battjes 1970-09-16 1972-01-04

Implemented in