3A3: Difference between revisions
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{{BeginSpecs}} | {{BeginSpecs}} | ||
* Deflection: 10 V/Div to 0.1 mV/Div | |||
* Bandwidth: switch-selectable 500 kHz or 5 kHz | |||
* Input impedance: 1 MΩ // 47 pF | |||
{{EndSpecs}} | {{EndSpecs}} | ||
[[Category:Specifications needed]] | [[Category:Specifications needed]] |
Revision as of 11:38, 17 November 2018
Template:Plugin Sidebar 2 The Tektronix 3A3 is a dual trace differential amplifier for 560-series scopes. It was designed by Roy Hayes.
Key Specifications
- Deflection: 10 V/Div to 0.1 mV/Div
- Bandwidth: switch-selectable 500 kHz or 5 kHz
- Input impedance: 1 MΩ // 47 pF
please add more
Internals
Early 3A3s use a 7586 Nuvistor for the front end cathode follower. Serial numbers 4990 and up use a dual JFET.
Pictures
Older version (SN 4990 below , Nuvistor in input stage)
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Front SN4990 below
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Right side
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Left side
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Nuvistor in input stage
Newer version (SN 4990 up, FET in input stage)
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Front SN4990 up
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Right side
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Left side
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Top
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Bottom
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Dual JFET in input stage