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 SN 4990 up | caption=Type 3A3 front view (SN 4990 up) | | ||
series=[[560-series scopes]] | | series=[[560-series scopes]] | | ||
introduced=1964 | | introduced=1964 | | ||
Revision as of 09:31, 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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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
