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The Tektronix 105 is a square wave generator.  It is all tube.
{{Instrument Sidebar
|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 (PDF)]]
* [http://w140.com/tek_fcp/tek_type_105_field_recal_proc.pdf Tektronix 105 Field Recalibration Procedure (PDF)]
* [[Media:Tek 105 fcp.pdf|Tektronix 105 Factory Calibration Procedure (PDF, OCR)]]
<!-- * [http://bama.edebris.com/download/tek/105/105.djvu Tektronix 105 Manual (Djvu)] -->
}}
The '''Tektronix 105''' is a 25 Hz to 1 MHz square wave generator.  It was designed by [[Howard Vollum]] and Charles Sanford.  It is all tube.
 
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.
 
==Specifications==
* Frequency range: 25 Hz to 1 MHz
* Rise and fall time (10% to 90%): 20 nanoseconds
* Amplitude range (600-ohm internal load only): 10 V to 100 V peak-to-peak
* Amplitude range (93-ohm external load): 1.5 V to 15 V peak-to-peak
* Power consumption: 250 watts
* Weight: 35 pounds
 
==Pictures==
 
<gallery>
Tek 105 front.jpg |105 front
Tek 105 early.jpg|Early style of 105 with blocky meter
Tek 105 on.jpg
Tek 105 on2.jpg
Tek 105 rear.jpg
Tek 105 manual.jpg|manual
Tek 105 on.jpg|powered on
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
</gallery>
 
{{Parts|105}}
 
[[Category:Pulse generators]]

Revision as of 15:58, 10 October 2021

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. It is all tube.

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.

Specifications

  • Frequency range: 25 Hz to 1 MHz
  • Rise and fall time (10% to 90%): 20 nanoseconds
  • Amplitude range (600-ohm internal load only): 10 V to 100 V peak-to-peak
  • Amplitude range (93-ohm external load): 1.5 V to 15 V peak-to-peak
  • Power consumption: 250 watts
  • Weight: 35 pounds

Pictures


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