John Addis
John Lindsey 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) - 155-0173-00, 155-0175-00, 155-0076-00, 155-0180-00, 155-0181-00
- M377 preamplifier IC for 11000-series scopes (Ref 2, Ref 1)
Products by John Addis
Components by John Addis
| Model | Class | Description | Designers | Used in |
|---|---|---|---|---|
| 155-0076-00 | Monolithic integrated circuit | input protection and probe logic | John Addis • Wink Gross | 465 • 485 • 7A29 • 7A29P • 11A52 • 11A71 • 11A72 • SCD1000 |
| 155-0078-00 | Monolithic integrated circuit | broadband amplifier | John Addis | 464 • 465 • 466 • 468 • 475 • 475A • 475M • 485 • 7834 • 7844 • 7854 • 7904 • R7903 • R7912 • 7912AD • 7912HB • 7104 • 7A16A • 7A16P • 7A24 • 7A26 • 7A42 • 067-0587-01 • 067-0680-00 • AM503 • PG502 • PG508 • DC510 • DC5010 • FG5010 |
| 155-0173-00 | Hybrid integrated circuit | vertical channel switch | John Addis • Wink Gross | 7104 • R7103 • 7904A • 7934 • EG&G N-AM-173A |
| 155-0175-00 | Monolithic integrated circuit | broadband amplifier | John Addis • Wink Gross • Carl Battjes | 7904A • 7912HB • 7934 • 7104 • R7103 • 7A29 • 7A29P • 7F10 • 067-0587-02 • 067-0587-10 • 11A71 • SCD1000 • EG&G N-AM-173A |
| 155-0180-00 | Hybrid integrated circuit | fast input protection | John Addis • Wink Gross | 7A29 • 7A29P • 7F10 • 11A71 |
| 155-0181-00 | Hybrid integrated circuit | input amplifier | John Addis • Wink Gross | 7A29 • 7A29P • 7F10 • 11A71 |
| 155-0273-00 | Monolithic integrated circuit | broadband vertical amplifier | John Addis | 2220 • 2221 • 2230 • 2232 |
| 155-0274-00 | Monolithic integrated circuit | broadband vertical amplifier | John Addis | 2220 • 2221 • 2230 |
| 165-2456-00 | Hybrid integrated circuit | amplifier | John Addis | AM503A • AM503B |
| M377 | Monolithic integrated circuit | amplifier | John Addis | 11A16 • 11A32 • 11A33 • 11A34 • 11A52 • 2245 • 2245A • 2247 • 2247A • 2252 • TDS410 • TDS420 • TDS460 • TDS520D • TDS540D • TDS580D • TDS680C • TDS684C • TDS714L • TDS724D • TDS754D • TDS784D |
| M474 | Monolithic integrated circuit | amplifier | John Addis • Ivan John Cousins | 11A32 • 11A34 |
| M694 | Monolithic integrated circuit | amplifier | John Addis | 165-2456-00 |
| M753 | Monolithic integrated circuit | buffer amplifier | John Addis | H2462 |
| M777 | Monolithic integrated circuit | amplifier | John Addis • Bob Woolhiser • Rich Huard | H2462 |
Patents by John Addis
| Page | Office | Number | Title | Inventors | Company | Filing date | Grant date |
|---|---|---|---|---|---|---|---|
| Patent US 3582807A | US | 3582807A | Amplifier gain control circuit including diode bridge | John Addis | Tektronix Inc | 1969-07-28 | 1971-06-01 |
| Patent US 3710270A | US | 3710270A | Linear gain control | John Addis • Ron Peltola | Tektronix Inc | 1970-07-28 | 1973-01-09 |
| Patent US 3906344A | US | 3906344A | Oscilloscope having selectable input impedances | John Addis • Ron Peltola | Tektronix Inc | 1974-04-04 | 1975-09-16 |
| Patent US 4132958A | US | 4132958A | Feedbeside correction circuit for an amplifier | John Addis • Bruce Hofer | Tektronix Inc | 1977-10-31 | 1979-01-02 |
| Patent US 4390852A | US | 4390852A | Buffer amplifier | John Addis | Tektronix Inc | 1981-04-13 | 1983-06-28 |
| Patent US 4551636A | US | 4551636A | Wide bandwidth signal coupling circuit having a variable voltage-level shift from input to output | Gene Andrews • John Addis | Tektronix Inc | 1983-05-25 | 1985-11-05 |
| Patent US 4647889A | US | 4647889A | Rotary control having variable detents | John Addis | Tektronix Inc | 1985-11-15 | 1987-03-03 |
| Patent US 4704558A | US | 4704558A | Method and apparatus for automatic oscilloscope calibration | John Addis • Dave Morgan | Tektronix Inc | 1985-12-02 | 1987-11-03 |
| Patent US 4731693A | US | 4731693A | Connection apparatus for integrated circuit | William E. Berg • John Addis | Tektronix Inc | 1986-09-29 | 1988-03-15 |
| Patent US 4667146A | US | 4667146A | Voltage-controlled push-pull current source | John Addis | Tektronix Inc | 1986-10-10 | 1987-05-19 |
| Patent US 4713627A | US | 4713627A | Active filter with bootstrapping | John Addis | Tektronix Inc | 1986-10-10 | 1987-12-15 |
| Patent US 4725790A | US | 4725790A | Broadband DC level shift circuit with feedback | John Addis • Pat Quinn | Tektronix Inc | 1986-10-14 | 1988-02-16 |
| Patent US 4731588A | US | 4731588A | Gain selectable amplifier with resonance compensation | John Addis • Clifford E. Baker • Pat Quinn | Tektronix Inc | 1986-10-14 | 1988-03-15 |
| Patent US 4714896A | US | 4714896A | Precision differential amplifier having fast overdrive recovery | John Addis | Tektronix Inc | 1986-10-15 | 1987-12-22 |
| Patent US 5075636A | US | 5075636A | Differential amplifier with fast overdrive recovery | John Addis • Davorin Fundak • Frank G. DiGiovanni | Tektronix Inc | 1990-12-03 | 1991-12-24 |
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
