John Addis: Difference between revisions
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==Patents== | ==Patents== | ||
* [http://www.google.com/patents/US3582807 US Patent 3,582,807 Amplifier Gain Control Circuit Including Diode Bridge] | |||
* [http://www.google.com/patents/US3710270 US Patent 3,710,270 Linear Gain Control] | |||
* | * [http://www.google.com/patents/US3906344 US Patent 3,906,344 Oscilloscope having selectable input impedances] | ||
* | * [http://www.google.com/patents/US4132958 US Patent 4,132,958 Feedbeside correction circuit for an amplifier] | ||
* | * [http://www.google.com/patents/US4390852 US Patent 4,390,852 Buffer Amplifier] | ||
* [http://www.google.com/patents/US4132958 US Patent 4,132,958 Feedbeside correction circuit for an amplifier] | * [http://www.google.com/patents/US4551636 US Patent 4,551,636 Wide bandwidth signal coupling circuit having a variable voltage-level shift from input to output] | ||
* | * [http://www.google.com/patents/US4647889 US Patent 4,647,889 Rotary control having variable detents] | ||
* | * [http://www.google.com/patents/US4667146 US Patent 4,667,146 Voltage-controlled push-pull current source] | ||
* | * [http://www.google.com/patents/US4704558 US Patent 4,704,558 Method and apparatus for automatic oscilloscope calibration] | ||
* | * [http://www.google.com/patents/US4713627 US Patent 4,713,627 Active filter with bootstrapping] | ||
* | * [http://www.google.com/patents/US4714896 US Patent 4,714,896 Precision differential amplifier having fast overdrive recovery] | ||
* | * [http://www.google.com/patents/US4725790 US Patent 4,725,790 Broadband DC level shift circuit with feedback] | ||
* | * [http://www.google.com/patents/US4731588 US Patent 4,731,588 Gain selectable amplifier with resonance compensation] | ||
* | * [http://www.google.com/patents/US4731693 US Patent 4,731,693 Connection apparatus for integrated circuit] | ||
* | * [http://www.google.com/patents/US5075636 US Patent 5,075,636 Differential amplifier with fast overdrive recovery] | ||
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==Links== | ==Links== | ||
Revision as of 08:27, 9 June 2018
John Addis is an engineer who worked for Tektronix (now retired).
Tek products
- designed the 1A7 (not the 1A7A, which was designed by Thor Hallen and is electrically similar to the 7A22). The 1A7 was Addis' first design at Tektronix.
- designed the 7A11 amplifier
- designed the 067-0681-01 pulse generator / calibration fixture
- designed the 155-0078-xx (M84) amplifier chip
- with Wink Gross, co-designed the vertical amplifier for the 485 (Ref 1)
- responsible for vertical system in the 7104
- with Wink Gross, co-designed the hybrid amplifiers for the 7104 (Ref 1)
- M377 preamplifier IC for 11000-series scopes (Ref 2, Ref 1)
Patents
- US Patent 3,582,807 Amplifier Gain Control Circuit Including Diode Bridge
- US Patent 3,710,270 Linear Gain Control
- US Patent 3,906,344 Oscilloscope having selectable input impedances
- US Patent 4,132,958 Feedbeside correction circuit for an amplifier
- US Patent 4,390,852 Buffer Amplifier
- US Patent 4,551,636 Wide bandwidth signal coupling circuit having a variable voltage-level shift from input to output
- US Patent 4,647,889 Rotary control having variable detents
- US Patent 4,667,146 Voltage-controlled push-pull current source
- US Patent 4,704,558 Method and apparatus for automatic oscilloscope calibration
- US Patent 4,713,627 Active filter with bootstrapping
- US Patent 4,714,896 Precision differential amplifier having fast overdrive recovery
- US Patent 4,725,790 Broadband DC level shift circuit with feedback
- US Patent 4,731,588 Gain selectable amplifier with resonance compensation
- US Patent 4,731,693 Connection apparatus for integrated circuit
- US Patent 5,075,636 Differential amplifier with fast overdrive recovery
Links
- John Addis, Good Engineering and Fast Vertical Amplifiers, in Jim Williams (Ed.), Analog Circuit Design: Art, Science and Personalities (1991), p.114 (Ref 1)
- P.Starič, E. Margan: Wideband Amplifiers (Ref. 2)
- A Tektronix oscilloscope that moved faster than light? The Oregonian, 23 Sep 2011. (Original no longer accessible, link via archive.org.), and the paper referred to in that article, Kirk T. McDonald, Radiation from a Superluminal Source
Photos
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John Addis and Barrie Gilbert
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Zorana Starič and John Addis
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John Addis fixing a 547
