3A1S: Difference between revisions
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{{Plugin Sidebar 2| | |||
title=Tektronix 3A1S | | |||
summary=25 MHz vertical amplifier| | |||
image=Tek 3a1s.jpg | | |||
caption=3A1S front view | | |||
introduced=1961 | | |||
discontinued=(?) | | |||
series=[[560-series scopes]]| | |||
manuals=* [http://w140.com/tek-561s.pdf Tektronix 561S / 3A1S / 3B1S Manual (PDF)] | |||
}} | |||
The '''Tektronix 3A1S''' is a vertical plug-in for the [[561#561S|561S]]. | |||
{{BeginSpecs}} | |||
{{Spec | Deflection | from 10 mV/Div to 10 V/Div (in a 561S) }} | |||
{{Spec | Bandwidth | 25 MHz }} | |||
{{Spec | Rise time | 14 ns }} | |||
{{Spec | Input impedance | 1 MΩ // 47 pF }} | |||
{{EndSpecs}} | |||
==Internals== | |||
The input signal passes through a compensated attenuator switch and | |||
then into a [[7586]] cathode-follower biased with 2 mA plate current. | |||
The gain stages use a mix of transistors and output stage driving the | |||
deflection plates is a transistor/pentode cascode circuit with T-coil loading. | |||
The 3A1S is built in traditional ceramic-strip construction. | |||
==Pictures== | |||
<gallery> | <gallery> | ||
File:Tek-561s vert1.png | File:Tek 3a1s.jpg | ||
File:Tek-561s vert2.png | File:Tek 3a1s left.jpg | ||
File:Tek 3a1s right.jpg | |||
File:Tek-561s vert1.png|3A1S input amplifier and switching | |||
File:Tek-561s vert2.png|3A1S output amplifier | |||
</gallery> | </gallery> | ||
[[Category:560 series plugins]] | |||
Revision as of 17:43, 19 April 2016
Template:Plugin Sidebar 2 The Tektronix 3A1S is a vertical plug-in for the 561S.
Key Specifications
| Deflection | from 10 mV/Div to 10 V/Div (in a 561S) |
|---|---|
| Bandwidth | 25 MHz |
| Rise time | 14 ns |
| Input impedance | 1 MΩ // 47 pF |
Internals
The input signal passes through a compensated attenuator switch and then into a 7586 cathode-follower biased with 2 mA plate current.
The gain stages use a mix of transistors and output stage driving the deflection plates is a transistor/pentode cascode circuit with T-coil loading.
The 3A1S is built in traditional ceramic-strip construction.
Pictures
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3A1S input amplifier and switching
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3A1S output amplifier
