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 | 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. | ||
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==Implemented in== | ==Implemented in== | ||
* [[155-0061-00]] / [[203-0126-90]] | |||
* [[155-0064-00]] | * [[155-0064-00]] | ||
* [[155-0078-00]] | * [[155-0078-00]] | ||
* [[155-0080-00]] | * [[155-0080-00]] | ||
* [[155-0175-00]] | * [[155-0175-00]] | ||
* [[155-0178-00]] | |||
* [[155-0181-00]] | * [[155-0181-00]] | ||
* [[155-0187-00]] | * [[155-0187-00]] | ||
Latest revision as of 16:30, 17 June 2023
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.
- US Patent 3,633,120 Filed Sept. 16, 1970 / Granted Jan. 4, 1972