3A3: Difference between revisions
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{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Bandwidth | 500 kHz or 5 kHz (switch-selectable) }} | |||
{{Spec | Deflection | 0.1 mV/Div to 10 V/Div, 1−2−5 }} | |||
{{Spec | Input impedance | 1 MΩ // 47 pF }} | |||
{{EndSpecs}} | {{EndSpecs}} | ||
==Internals== | ==Internals== | ||
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==Pictures== | ==Pictures== | ||
===Older version (SN 4990 | |||
===Older version (below SN 4990, Nuvistor in input stage)=== | |||
<gallery> | <gallery> | ||
3A3 front SN4990below.jpg| Front | 3A3 front SN4990below.jpg | Front | ||
3A3_right_SN4990below.jpg |Right side | 3A3_right_SN4990below.jpg | Right side | ||
3A3_left_SN4990below.jpg |Left side | 3A3_left_SN4990below.jpg | Left side | ||
3a3 001.JPG| Nuvistor in input stage | 3a3 001.JPG | Nuvistor in input stage | ||
</gallery> | </gallery> | ||
===Newer version (SN 4990 up, FET in input stage)=== | |||
===Newer version (from SN 4990 up, FET in input stage)=== | |||
<gallery> | <gallery> | ||
3a3 front.jpg|Front | 3a3 front.jpg | Front | ||
3a3 right.jpg|Right side | 3a3 right.jpg | Right side | ||
3a3 left.jpg|Left side | 3a3 left.jpg | Left side | ||
3a3 top.jpg|Top | 3a3 top.jpg | Top | ||
3a3 bottom.jpg|Bottom | 3a3 bottom.jpg | Bottom | ||
3A3 002.JPG| Dual JFET in input stage | 3A3 002.JPG | Dual JFET in input stage | ||
</gallery> | |||
[[Category:560 series plugins]] | [[Category:560 series plugins]] |
Revision as of 06:55, 19 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
Bandwidth | 500 kHz or 5 kHz (switch-selectable) |
---|---|
Deflection | 0.1 mV/Div to 10 V/Div, 1−2−5 |
Input impedance | 1 MΩ // 47 pF |
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 (below SN 4990, Nuvistor in input stage)
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Front
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Right side
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Left side
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Nuvistor in input stage
Newer version (from SN 4990 up, FET in input stage)
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Front
-
Right side
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Left side
-
Top
-
Bottom
-
Dual JFET in input stage