Thor Hallen

Thor Oscar Hallen (b. 1939 – d. 2002) was a Tektronix engineer.

Thor Hallen

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Tek products

  • 7904 vertical amplifier
  • 7A19 amplifier plug-in
  • 1A7A differential amplifier plug-in with true differential offset

Documents Authored by Thor Hallen

Document Page Class Title Author(s) Year Refers to
Tekscope 1971 V3 N4 Jul 1971.pdf 3 Article A Subnanosecond Realtime Oscilloscope Val Garuts Thor Hallen 1971 7904 154-0644-00 7A19 Ft doubler 7B92
TekWeek (partial) October 10, 1975.pdf 1 Article Spectrum analyzers require high technology Thor Hallen Dave Friedley 1975 Spectrum Analyzers Pentrix 7L5 5L4 7L12 7L13 1401 491 1405 1502 1503
TekWeek (partial) October 10, 1975.pdf 2 Article Questions for guest speakers Tom Long Steve Kerman Dave Friedley Thor Hallen Charlie Rhodes 1975 Communications division TV products Grass Valley Group 528 1480 520 1420

Products by Thor Hallen

Manufacturer Model Description Designers Introduced
Tektronix 7A19 600 MHz amplifier Thor Hallen Val Garuts 1971
Tektronix 7904 500 MHz non-storage mainframe Val Garuts Thor Hallen John McCormick Les Larson Bill DeVey Bill Peek Hans Springer Joe Burger Joel Swanno Ken Hawken 1971
Tektronix R7903 500 MHz non-storage mainframe Val Garuts Thor Hallen John McCormick Les Larson Bill DeVey Bill Peek Hans Springer Joe Burger Joel Swanno Ken Hawken 1974

Components by Thor Hallen

Model Class Description Designers Used in
155-0059-00 Monolithic integrated circuit HF amplifier Thor Hallen 7834 7844 7854 7904 R7903 R7912 7912AD
203-0080-90 Monolithic integrated circuit HF output amplifier Thor Hallen 155-0065-00 155-0064-01 155-0125-00

Patents by Thor Hallen

Page Office Number Title Inventors Company Filing date Grant date
Patent US 3924198A US 3924198A Transistor amplifier having single control to simultaneously adjust level input resistance and input voltage Thor Hallen Tektronix Inc 1971-08-12 1975-12-02
Patent US 3715609A US 3715609A Temperature compensation of voltage controlled resistor Thor Hallen Tektronix Inc 1971-08-17 1973-02-06

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