3A3: Difference between revisions
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summary=Dual trace differential amplifier plugin | | summary=Dual trace differential amplifier plugin | | ||
image=3a3 front.jpg | | image=3a3 front.jpg | | ||
caption=Type 3A3 front view | | caption=Type 3A3 SN 4990 up front view | | ||
series=[[560-series scopes]] | | series=[[560-series scopes]] | | ||
introduced=1964 | | introduced=1964 | | ||
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==Pictures== | ==Pictures== | ||
===Older version (SN 4990 below , Nuvistor in input stage)=== | |||
<gallery> | |||
3A3 front SN4990below.jpg| Front SN4990 below | |||
3A3_right_SN4990below.jpg | |||
3A3_left_SN4990below.jpg | |||
3a3 001.JPG| Nuvistor in input stage | |||
</gallery> | |||
===Newer version (SN 4990 up, FET in input stage)=== | |||
<gallery> | <gallery> | ||
3a3 front.jpg|Front | 3a3 front.jpg|Front | ||
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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> | </gallery> | ||
[[Category:560 series plugins]] | [[Category:560 series plugins]] | ||
Revision as of 04:15, 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
| Bandwidth | switch-selectable, 5 kHz or 500 kHz |
|---|
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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Nuvistor in input stage
Newer version (SN 4990 up, FET in input stage)
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Front
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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
