3A8: Difference between revisions

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(Per TekWeek Jan 7, 1966)
(Fleshed out and reorganized the 3A8 page)
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It was designed by [[Roy Hayes]].
It was designed by [[Roy Hayes]].


The Type 3A8 can be used with any of the following adapters:  
==Internals ==
[[013-081]], [[013-068]], [[013-0048-01]], [[013-0049-01]], [[013-0086-00]], [[013-0067-00]].
The 3A8 contains two operational amplifiers and one vertical display amplifier.
 
The 3A8 display amplifier can accept inputs from the output of either operational amplifier or from an external input. The input can be AC or DC coupled and can be inverted if desired. It has several transistors plus three 9-pin miniature vacuum tubes: an [[8416]] and two [[6KV8]]s.
 
Each 3A8 operational amplifier can accept external inputs and has external as well as internal outputs. Each operational amplifier has a number of transistors plus three [[Nuvistor]]s: a [[6CW4]] and a selected pair of [[7586]]s.


==Specifications==
==Specifications==
[[Category:Specifications needed]] ''please add''
The vertical display amplifier has a bandwidth of DC-3.5 MHz with sensitivity from .02 to 10 V/cm.


==Internals ==
The operational amplifiers have a gain bandwidth product ≥ 10 MHz and a DC open loop gain ≥ 10,000. Output voltage is ≥ ± 25 V. Output current is ≥ 7.5 mA (including feedback current.) Input and feedback resistances and capacitances are separately switch selectable to provide a variety of opamp functions. External components can be substituted by way of front panel banana sockets which also accept any of the following special purpose adapters:
The 3A8 contains three [[Nuvistor]]s, one [[6CW4]] and a selected pair of [[7586]]s.
 
*[[013-0049-01]] Standard Shielded Cover
*[[013-0048-01]] Terminal Adapter Assembly (empty box for user chosen components)
*[[013-081]] Compensating Adapter
*[[013-068]] Gating Adapter
*[[013-0086-00]] Leakage Current Adapter
*[[013-0067-00]] Logarithmic Amplifier Adapter


==Pictures==
==Pictures==

Revision as of 15:43, 3 April 2020

Template:Plugin Sidebar 2 The Tektronix 3A8 is an operational amplifier plug-in for 560-series scopes. It was designed by Roy Hayes.

Internals

The 3A8 contains two operational amplifiers and one vertical display amplifier.

The 3A8 display amplifier can accept inputs from the output of either operational amplifier or from an external input. The input can be AC or DC coupled and can be inverted if desired. It has several transistors plus three 9-pin miniature vacuum tubes: an 8416 and two 6KV8s.

Each 3A8 operational amplifier can accept external inputs and has external as well as internal outputs. Each operational amplifier has a number of transistors plus three Nuvistors: a 6CW4 and a selected pair of 7586s.

Specifications

The vertical display amplifier has a bandwidth of DC-3.5 MHz with sensitivity from .02 to 10 V/cm.

The operational amplifiers have a gain bandwidth product ≥ 10 MHz and a DC open loop gain ≥ 10,000. Output voltage is ≥ ± 25 V. Output current is ≥ 7.5 mA (including feedback current.) Input and feedback resistances and capacitances are separately switch selectable to provide a variety of opamp functions. External components can be substituted by way of front panel banana sockets which also accept any of the following special purpose adapters:

Pictures