Patent US 3753170A

Patent number	US 3753170A (click link for details and documents via Google Patents)
Title	Step attenuator apparatus having attenuator stages selectively connected in cascade by cam actuated switches
Inventors	Ken Holland
Company	Tektronix Inc
Filing date	1971-02-10
Grant date	1973-08-14

Cites:

Patent	Title	Inventors	Assignee	Granted
Patent US 3369173A	Attenuator apparatus	Gene Andrews	Tektronix Inc	1968-02-13

Cited By:

Patent	Title	Inventors	Assignee	Granted
Patent US 3900711A	Electrical contactor assembly for high frequency applications	Ken Holland	Tektronix Inc	1975-08-19
Patent US 4181903A	Hybrid cascade attenuator	Ken Holland • Gary W. Reed • Desmond L. Murphy	Tektronix Inc	1980-01-01

Related products:

Manufacturer	Model	Description	Introduced	Designers
Tektronix	465	Portable 100 MHz dual-trace scope	1972	Leon Orchard • Luis Navarro • Bob Shand • Jim Hinze • Frank Dewater • Pete Janowitz • Dave Laib • Al Schamel • Bert tenKate • Ken Holland • Bill Mark • George Ermini • Dennis Braatz
Tektronix	475	Portable 200 MHz dual-trace scope	1972	Leon Orchard • Luis Navarro • Bob Shand • Jim Hinze • Jim Godwin • Les Larson • Steve Tosh • Jim Woo • Ken Holland • Bill Mark • George Ermini • Dennis Braatz
Tektronix	5A38	35 MHz dual channel vertical plugin	1975
Tektronix	5A45	60 MHz single channel vertical plugin	1975
Tektronix	7A15	80 MHz vertical amplifier	1970	Tom Rousseau
Tektronix	7A16A	225 MHz vertical amplifier	1973	Tom Rousseau
Tektronix	7A18	75 MHz dual-channel amplifier	1971	Tom Rousseau
Tektronix	7A19	600 MHz amplifier	1971	Thor Hallen • Val Garuts
Tektronix	7A24	400 MHz dual channel vertical amplifier	1974	Tom Rousseau
Tektronix	7A26	200 MHz dual-channel amplifier	1974	Tom Rousseau

This patent describes the attenuator built using plug-in modules and a cam switch, used in the 465, 475, 5A38, 5A45, 7A15, 7A16A, 7A18, 7A26 and others.

It may also apply to the 50 Ω versions in the 7A19 and 7A24.

Pictures

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  7A18 attenuator, top

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  7A18 attenuator, bottom

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  7A18