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The '''Tektronix 105''' is a 25 Hz to 1 MHz square wave generator.   
{{Instrument Sidebar
It is all tube.  The 105 has a d'Arsonval meter on its front panel indicating the current frequency.
|manufacturer=Tektronix
|model=105
|class=Signal generator
|series=
|summary=25 Hz to 1 MHz square wave generator
|image=Tek_105_front.jpg
|caption=
|introduced=1950
|discontinued=(?)
|designers=Howard Vollum;Charles Sanford
|manuals=
* [[Media:070-049.pdf|Tektronix 105 Manual]]
* [[Media:Tek type 105 field recal proc.pdf|Tektronix 105 Field Recalibration Procedure]] (OCR)
* [[Media:Tek 105 fcp.pdf|Tektronix 105 Factory Calibration Procedure]] (OCR)
}}
The '''Tektronix 105''' is a 25 Hz to 1 MHz square-wave generator.   
It was designed by [[Howard Vollum]] and [[Charles Sanford]] and has an all-tube construction.


The 105 has a d'Arsonval meter on its front panel indicating the current frequency.
The frequency meter works on the principle of moving a constant amount of charge per cycle, integrating this charge into a current, and measuring the current.
The frequency meter works on the principle of moving a constant amount of charge per cycle, integrating this charge into a current, and measuring the current.


It was designed by [[Howard Vollum]] and Charles Sanford.
The output is generated at the plates of three [[6AG7]] triodes that run in parallel.


* [http://bama.edebris.com/download/tek/105/105.djvu Tektronix 105 Manual (PDF)]
{{BeginSpecs}}
* [http://w140.com/tek_fcp/tek_type_105_field_recal_proc.pdf Tektronix 105 Field Recalibration Procedure (PDF)]
{{Spec|Frequency|25 Hz to 1 MHz}}
{{Spec|Rise and fall time|20 ns (10% to 90%) }}
{{Spec|Amplitude|10 V to 100 V<sub>p-p</sub> (internal 600 Ω load); 1.5 V to 15 V<sub>p-p</sub> (external 93 Ω load) }}
{{Spec|Power|250 W}}
{{Spec|Weight|35 pounds}}
{{EndSpecs}}
 
==Pictures==


<gallery>
<gallery>
Image:Tek 105 front.jpg
Tek 105 front.jpg |105 front
File:Tek 105 blockdiag.png|Block diagram
Tek 105 early.jpg|Early style of 105 with blocky meter
File:Tek 105 power supply.png|Power supply schematic
File:Tek 105 generator and meter.png|Generator schematic
Tek 105 on.jpg
Tek 105 on.jpg
Tek 105 on2.jpg
Tek 105 on2.jpg
Tek 105 waveform.jpg|output waveform of 105
Tek 105 rear.jpg
Tek 105 rear.jpg
File:105-rightInterior.jpg| right interior
File:Tek 105 output section.jpg|output section detail
Tek 105 early.jpg|Early style of 105 with blocky meter
Tek 105 waveform.jpg|output waveform
Tek 105 manual.jpg|manual
Tek 105 manual.jpg|manual
Tek 105 on.jpg|powered on
Tek 105 on.jpg|powered on
Tek 105 tube side.jpg|internal view, tube side
Tek 105 tube side.jpg|internal view, tube side
105-rightInterior.jpg| right interior
Tek 105 output section.jpg|output section detail
Tek 105 waveform.jpg|output waveform of 105
Tek 105 blockdiag.png|Block diagram
Tek 105 power supply.png|Power supply schematic
Tek 105 generator and meter.png|Generator schematic
Early tek 105.jpg|Early Tek 105 with horizontal case
Tek 105 early power light low.jpg|Early Tek 105 with power light below switches
</gallery>
</gallery>
==Components==
{{Parts|105}}


[[Category:Pulse generators]]
[[Category:Pulse generators]]
[[Category:Introduced in 1950]]

Latest revision as of 07:45, 18 June 2024

Tektronix 105
25 Hz to 1 MHz square wave generator

Produced from 1950 to (?)

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 105 is a 25 Hz to 1 MHz square-wave generator. It was designed by Howard Vollum and Charles Sanford and has an all-tube construction.

The 105 has a d'Arsonval meter on its front panel indicating the current frequency. The frequency meter works on the principle of moving a constant amount of charge per cycle, integrating this charge into a current, and measuring the current.

The output is generated at the plates of three 6AG7 triodes that run in parallel.

Key Specifications

Frequency 25 Hz to 1 MHz
Rise and fall time 20 ns (10% to 90%)
Amplitude 10 V to 100 Vp-p (internal 600 Ω load); 1.5 V to 15 Vp-p (external 93 Ω load)
Power 250 W
Weight 35 pounds

Pictures

  • 105 front

    105 front

  • Early style of 105 with blocky meter

    Early style of 105 with blocky meter

  • manual

    manual

  • powered on

    powered on

  • internal view, tube side

    internal view, tube side

  • right interior

    right interior

  • output section detail

    output section detail

  • output waveform of 105

    output waveform of 105

  • Block diagram

    Block diagram

  • Power supply schematic

    Power supply schematic

  • Generator schematic

    Generator schematic

  • Early Tek 105 with horizontal case

    Early Tek 105 with horizontal case

  • Early Tek 105 with power light below switches

    Early Tek 105 with power light below switches

Components

Some Parts Used in the 105

Part Part Number(s) Class Description Used in
6AG7 154-012 • 154-0012-00 Vacuum Tube (Pentode) 9 Watt power pentode 104 • 104A • 105 • 112 • 511 • 511A • 512 • 513 • 514 • 517 • 517A • 524
6CB6A 154-0030-00 Vacuum Tube (Pentode) pentode 105 • 112 • 316 • 317 • 503 • 504 • 513 • 517 • 517A • 541 • 535 • 545 • 63 • 2A63
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