123: Difference between revisions

Jump to navigation Jump to search

123 (view source)

Revision as of 16:15, 10 October 2021

328 bytes added ,  10 October 2021
no edit summary
No edit summary
No edit summary
(5 intermediate revisions by 3 users not shown)
Line 1: Line 1:
The Tektronix 123 is a miniature preamplifier [[introduced in 1958]]. 
{{Instrument Sidebar
The gain is 100, input impedance is 10 megohms, and output impedance is
|manufacturer=Tektronix  
31 kilohms.  The frequency response is from 3 Hz to 25 kHz.
|model=123
The 123 uses two [[CK512AX]] pentodes for amplification and is powered by
|class=Amplifier
batteries.  
|series=
|summary=miniature preamplifier
|image=Tek 123 front.jpg
|caption=Tek 123 front
|introduced=1955
|discontinued=(?)
|designers=
|manuals=
* ''please add [[Category:Manual needed]]
}}
The '''Tektronix 123''' is a miniature preamplifier [[introduced in 1955]].


Although the 123 is an AC amplifier, the output is taken directly from
The gain is 100, input impedance is 10 MΩ, and output impedance is 31 kΩ. Frequency response is from 3 Hz to 25 kHz.
the plate of one of the tubes, without an output coupling (DC block)
capacitor. So the output signal rides on about 15 volts of DC. 
The intended use of the 123 is as a preamplifier for other
instrumentation such as an oscilloscope, and the oscilloscope's
input coupling can simply be set to "AC".


[[List of manuals that are needed|Manual needed]].
The 123 uses two [[CK512AX]] pentodes for amplification and is powered by batteries.  


Although the 123 is an AC amplifier, the output is taken directly from the plate of one of the tubes, without an output coupling (DC block) capacitor.  So the output signal rides on about 15 volts of DC. 
The intended use of the 123 is as a preamplifier for other instrumentation such as an oscilloscope, and the oscilloscope's input coupling can simply be set to "AC".
==Pictures==
<gallery>
<gallery>
Image:Tek 123 1958 cat.jpg|Description in 1958 Catalog
Tek 123 1958 cat.jpg|Description in 1958 Catalog
Image:Tek 123 front.png|Front panel
Tek 123 front.png|Front panel
Image:Tek 123 schematic.png|Schematic
Tek 123 schematic.png|Schematic
Image:Tek 123 partslist.png|Parts list
Tek 123 partslist.png|Parts list
File:Tek 123 front.jpg|External view
Tek_123-2.jpg
File:Tek 123 internal.jpg|internal view
Tek_123-3.jpg
Tek_123-4.jpg
Tek_123-5.jpg
Tek_123-1.jpg
Tek 123 front.jpg|External view
Tek 123 internal.jpg|internal view
</gallery>
</gallery>
{{Parts|123}}
[[Category:Amplifiers]]
[[Category:Introduced in 1955]]
Retrieved from "https://w140.com/tekwiki/wiki/Special:MobileDiff/6671...69658"

Navigation menu