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[[File:Tek 575 8250.JPG|thumb|350px|right]]
{{Oscilloscope Sidebar|
title=Tektronix 575 |
image=Tek 575 8250.JPG |
caption=Tektronix 575 |
introduced=1957 |
discontinued=(?) |
summary=Transistor Curve Tracer |
manuals=
* [http://bama.edebris.com/download/tek/575-175/tek%20575%20&%20175.v6.pdf Tektronix 575 and 175 Manual (PDF)]
* [http://w140.com/tek-575-122c.pdf Tektronix 575 with Mod 122C Manual (PDF)]
* [http://w140.com/tek_fcp/tek_575_fac_cal.pdf Tektronix 575 Factory Calibration Procedure (PDF)]
* [http://w140.com/tek_3-terminal_adapter_013-0069-00.pdf 013-0069-00 3-Terminal Adapter (PDF)]
}}
The '''Tektronix 575''' is a curve tracer for transistors, [[introduced in 1957|introduced in March 1957]].
The '''Tektronix 575''' is a curve tracer for transistors, [[introduced in 1957|introduced in March 1957]].
It can be thought of as being composed of three modules: an x-y display, a step source, and a collector
It can be thought of as being composed of three modules: an X-Y display, a step source, and a collector sweep source.
sweep source.
 
{{MissingSpecs}}
 
==Internals==
=== X-Y display ===
The vertical and horizontal amplifiers are very similar, using the two halves of a [[6CG7]] dual-triode tube as the output amplifier. 
The CRT has -1700 V on the cathode and +2500 V on the anode.  The HV power supply uses two [[5642]] rectifier tubes. 


== X-Y display ==
It is possible to use the 575 as an X-Y monitor.  The vertical and horizontal  
The vertical and horizontal amplifiers are very similar,  
range switches have settings for external input, at 0.1 V/div sensitivity.
using the two halves of a [[6CG7]] dual-triode tube as the output amplifier.
The CRT has -1700V on the cathode and +2500V on the anode.
The HV power supply uses two [[5642]] rectifier tubes. 


== Step Source ==
=== Step Source ===
This uses a gated miller integrator to generate controlled steps.   
This uses a gated Miller integrator to generate controlled steps.   
The result is a staircase waveform, which generates different traces in the the family of I-V curves of the transistor.  
The result is a staircase waveform, which generates different traces in the the family of I-V curves of the transistor.  


== Collector Sweep ==
=== Collector Sweep ===
Power from the mains goes through an isolation transformer and a variac and is rectified by germanium diodes to produce the collector sweep voltage.  The isolation transformer has two pairs of secondary taps, one for high voltage (0 to 200V) and low current, the other for low voltage (0 to 20V) and high current.  The maximum power that can be delivered to the transistor in either mode is approximately 200 watts.
Power from the mains goes through an isolation transformer and a variac and is rectified by germanium diodes to produce the collector sweep voltage.  The isolation transformer has two pairs of secondary taps, one for high voltage (0 to 200 V) and low current, the other for low voltage (0 to 20 V) and high current.  The maximum power that can be delivered to the transistor in either mode is approximately 200 Watts.


575 with Mod122c has extended collector sweep voltage to 400V.
575 with Mod 122C has extended collector sweep voltage to 400 V.


== Type 175 High Current Adaptor ==
=== Rectifiers ===
The 575 can be paired with a [[175]] for high current device measurements.
Early 575 versions used [[selenium rectifiers]].  A kit for conversion to silicon diodes was available and is documented in the back of the manual.   
<gallery>
File:Tek 575 on 175.jpg|575 on 175
</gallery>
It is possible to use the 575 as an X-Y monitor.  The vertical and horizontal
range switches have settings for external input, at 0.1 V/div sensitivity.


== Rectifiers ==
The 575 has a [[thermal cutoff]].   
Early 575 versions used [[selenium rectifiers]].  A kit for conversion to
silicon diodes was available and is documented in the back of the manual.   


The 575 has a [[thermal cutoff]].
== Type 175 High Current Adaptor ==
[[File:Tek 575 on 175.jpg | thumb | right | 575 on top of a [[175]]]]
The 575 can be paired with a [[175]] for high current device measurements.


* [http://bama.edebris.com/download/tek/575-175/tek%20575%20&%20175.v6.pdf Tektronix 575 and 175 Manual (PDF)]
==Links==
* [http://w140.com/tek-575-122c.pdf Tektronix 575 with Mod 122C Manual (PDF)]
* [http://w140.com/tek_575_use.pdf "A Power Curve Tracer At Surplus Prices" by Dennis L. Feucht (PDF)]
* [http://w140.com/tek_575_use.pdf "A Power Curve Tracer At Surplus Prices" by Dennis L. Feucht (PDF)]
* [http://classictek.org/images/stories/Articles/assorted_material/Using_Tek_575.pdf Some Transistor Measurements Using the Type 575]
* [http://classictek.org/images/stories/Articles/assorted_material/Using_Tek_575.pdf Some Transistor Measurements Using the Type 575]
* [http://w140.com/tek_fcp/tek_575_fac_cal.pdf Tektronix 575 Factory Calibration Procedure (PDF)]
* [http://www.oscilloscopemuseum.com/oscilloscope-tektronix-575-s1957.html Tek 575 @ oscilloscopemuseum.com]
* [http://w140.com/tek_3-terminal_adapter_013-0069-00.pdf 013-0069-00 3-Terminal Adapter (PDF)]


==Pictures==
<gallery>
<gallery>
Image:Tek 575 tq.jpg|575 w/o Mod 122C
Tek 575 tq.jpg |575 w/o Mod 122C
Image:575_122C.JPG|575 w Mod 122C
575_122C.JPG|575 w Mod 122C
Image:Tek 575 display.jpg
Tek 575 8250.JPG
Image:Tek 575 top.jpg
Tek 575 display.jpg
Image:Tek 575 internal.jpg
Tek 575 tunnel diode.jpg|575 testing a tunnel diode
Image:Tek 575 rear.jpg
Tek 575 top.jpg
Image:Tek 575 collector sweep2.png|Unmodified Collector Supply
Tek 575 internal.jpg
Image:Tek 575 122c-collector supply.png|Collector Supply Rectifier with MOD122C
Tek 575 rear.jpg
File:Tek 575 ps.png|Main Power Supply
Tek 575 bottom.jpg|Bottom
File:Tek 575 step gen.png|Step Generator
Tek 575 bottom rear.jpg|Bottom Rear
File:Tek 575 amplifiers.png|Amplifiers
Tek 575 hvps 1.jpg|High-Voltage Power Supply
File:Tek 575 crt circuit.png|CRT Circuit
</gallery>
File:Tek 575 tunnel diode.jpg|575 testing a tunnel diode
===Schematics===
File:Tek 575 8250.JPG
<gallery>
File:Tek 575 bottom.jpg|Bottom
Tek 575 collector sweep2.png|Unmodified Collector Supply
File:Tek 575 bottom rear.jpg|Bottom Rear
Tek 575 122c-collector supply.png|Collector Supply Rectifier with MOD122C
File:Tek 575 hvps 1.jpg|High-Voltage Power Supply
Tek 575 ps.png|Main Power Supply
Tek 575 step gen.png|Step Generator
Tek 575 amplifiers.png|Amplifiers
Tek 575 crt circuit.png|CRT Circuit
</gallery>
</gallery>


[[Category:Curve tracers]]
[[Category:Curve tracers]]
[[Category:Introduced in 1957]]
[[Category:Specifications needed]]

Revision as of 04:15, 31 December 2016

{{{manufacturer}}} 
Transistor Curve Tracer
Tektronix 575

Produced from 1957 to (?)

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 575 is a curve tracer for transistors, introduced in March 1957. It can be thought of as being composed of three modules: an X-Y display, a step source, and a collector sweep source.

Key Specifications

  • please add

Internals

X-Y display

The vertical and horizontal amplifiers are very similar, using the two halves of a 6CG7 dual-triode tube as the output amplifier. The CRT has -1700 V on the cathode and +2500 V on the anode. The HV power supply uses two 5642 rectifier tubes.

It is possible to use the 575 as an X-Y monitor. The vertical and horizontal range switches have settings for external input, at 0.1 V/div sensitivity.

Step Source

This uses a gated Miller integrator to generate controlled steps. The result is a staircase waveform, which generates different traces in the the family of I-V curves of the transistor.

Collector Sweep

Power from the mains goes through an isolation transformer and a variac and is rectified by germanium diodes to produce the collector sweep voltage. The isolation transformer has two pairs of secondary taps, one for high voltage (0 to 200 V) and low current, the other for low voltage (0 to 20 V) and high current. The maximum power that can be delivered to the transistor in either mode is approximately 200 Watts.

575 with Mod 122C has extended collector sweep voltage to 400 V.

Rectifiers

Early 575 versions used selenium rectifiers. A kit for conversion to silicon diodes was available and is documented in the back of the manual.

The 575 has a thermal cutoff.

Type 175 High Current Adaptor

575 on top of a 175

The 575 can be paired with a 175 for high current device measurements.

Links

Pictures

  • 575 w/o Mod 122C

    575 w/o Mod 122C

  • 575 w Mod 122C

    575 w Mod 122C

  • 575 testing a tunnel diode

    575 testing a tunnel diode

  • Bottom

    Bottom

  • Bottom Rear

    Bottom Rear

  • High-Voltage Power Supply

    High-Voltage Power Supply

Schematics

  • Unmodified Collector Supply

    Unmodified Collector Supply

  • Collector Supply Rectifier with MOD122C

    Collector Supply Rectifier with MOD122C

  • Main Power Supply

    Main Power Supply

  • Step Generator

    Step Generator

  • Amplifiers

    Amplifiers

  • CRT Circuit

    CRT Circuit

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