176: Difference between revisions

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{{Plugin Sidebar 2|
{{Plugin Sidebar
title=Tektronix 176 |
|manufacturer=Tektronix
summary=High-current test fixture |
|series=576
image=Tek-176-3q.jpg |  
|type=176  
caption=Tektronix 176 high-current test fixture |
|summary=High-current test fixture  
introduced=(?) |
|image=Tek-176-3q.jpg  
discontinued=(?) |
|caption=Tektronix 176 high-current test fixture  
series=[[576 | Tektronix 576 curve tracer]]|
|introduced=1970
manuals=
|discontinued=(?)  
* [http://w140.com/tek_176_ocr.pdf Tektronix 176 Manual (OCR, PDF)]
|designers=Jim Knapton;
* [http://w140.com/tek_176_1971_cat.pdf Tektronix 176 Description in 1971 Catalog (PDF)]
|manuals=
* [[Media:070-1073-00.pdf|Tektronix 176 Manual]] (OCR)
* [[Media:Tek 176 1971 cat.pdf|Tektronix 176 Description in 1971 Catalog]] (OCR)
}}
}}
The '''Tektronix 176''' is a pulsed high-current test fixture for the model [[576]] curve tracer.
The '''Tektronix 176''' is a pulsed high-current test fixture for the model [[576]] curve tracer.


The 176 can be considered a more modern replacement for the [[175]].
The 176 can be considered a more modern replacement for the [[175]]. Both can supply collector currents up to 200 A.
Both can supply collector currents up to 200 A.


The 175 uses a rectified mains-frequency transformer secondary current to supply the collector current to the device under test.
The 175 uses a rectified mains-frequency transformer secondary current to supply the collector current to the device under test.
In contrast, the 176 supplies the collector current by passing stored charge through an SCR.
In contrast, the 176 supplies the collector current by passing stored charge through an SCR.
This pulsed technique allows the 176 to measure points far from the origin of the I-V curve while
This pulsed technique allows the 176 to measure points far from the origin of the I-V curve while keeping the instrument compact and light and the minimizing thermal effects in the device under test.
keeping the instrument compact and light and the minimizing thermal effects in the device under test.


The 175 weighs 84 pounds (38 kg) while the 176 weighs 13 pounds (6 kg).
The 176 weighs 13 pounds (6 kg), whereas the 175 weighs 84 pounds (38 kg).
The 176 has a cooling fan, as does the 175 (for different reasons).


{{MissingSpecs}}
{{BeginSpecs}}
{{Spec | Collector Sweep  Ranges |
* 15 V / 200 A
* 75 V / 40 A
* 350V / 8 A}}
{{Spec | Power Limits | 1000 W, 100 W, and 10 W}}
{{Spec | Pulse Width | 300 μs, 80 μs}}
{{Spec | Risetime| 80 μs}}
{{Spec | Falltime| 10 μs}}
{{Spec | Vertical Display Collector Current Range | 0.1 μA/division to 20 A/division in 1-2-5 sequence }}
{{Spec | Vertical Display Accuracy 2 A to 20 A| Within 3% of on-screen value}}
{{Spec | Max. Base Current Step Generator Output | 20 A}}
{{EndSpecs}}


Peak collector supply current is 200A, peak base supply current is 20A.
==Links==
{{Documents|Link=176}}
{{PatentLinks|176}}


==Pictures==
==Pictures==
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<gallery>
<gallery>
Tek-176-in-576.jpg
Tek-176-in-576.jpg
Tek 176 block.png|block diagram
tek_176_1.jpg
tek_176_2.jpg
tek_176_3.jpg
tek_176_4.jpg
tek_176_5.jpg
tek_176_6.jpg
tek_176_7.jpg
tek_176_8.jpg
tek_176_9.jpg
tek_176_10.jpg
Tek-176-3q.jpg
Tek-176-3q.jpg
Tek-176-front.jpg
Tek-176-front.jpg
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[[Category:Introduced in 1971]]
[[Category:Introduced in 1971]]
[[Category:Curve tracers]]
[[Category:Curve tracer plugins]]
[[Category:Manual needed]]

Latest revision as of 12:56, 12 July 2024

Tektronix 176
High-current test fixture
Tektronix 176 high-current test fixture

Compatible with 576

Produced from 1970 to (?)

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix 176 is a pulsed high-current test fixture for the model 576 curve tracer.

The 176 can be considered a more modern replacement for the 175. Both can supply collector currents up to 200 A.

The 175 uses a rectified mains-frequency transformer secondary current to supply the collector current to the device under test. In contrast, the 176 supplies the collector current by passing stored charge through an SCR. This pulsed technique allows the 176 to measure points far from the origin of the I-V curve while keeping the instrument compact and light and the minimizing thermal effects in the device under test.

The 176 weighs 13 pounds (6 kg), whereas the 175 weighs 84 pounds (38 kg). The 176 has a cooling fan, as does the 175 (for different reasons).

Key Specifications

Collector Sweep Ranges
  • 15 V / 200 A
  • 75 V / 40 A
  • 350V / 8 A
Power Limits 1000 W, 100 W, and 10 W
Pulse Width 300 μs, 80 μs
Risetime 80 μs
Falltime 10 μs
Vertical Display Collector Current Range 0.1 μA/division to 20 A/division in 1-2-5 sequence
Vertical Display Accuracy 2 A to 20 A Within 3% of on-screen value
Max. Base Current Step Generator Output 20 A

Links

Documents Referencing 176

Document Class Title Authors Year Links
Tekscope 1971 V3 N4 Jul 1971.pdf Article Pulsed-Collector High-Current Testing with the 176 Jim Knapton 1971 176
48W-3346-3.pdf Brochure Making the Correct Semiconductor Measurements Time After Time 1982 576 • 172 • 176 • 577 • 178 • 5CT1N • 7CT1N
48w-5764.pdf Brochure Features Comparison of Tektronix Curve Tracers Versus HP4145A Semiconductor Parameter Analyzer (Tek internal) Laurie Lawrence 1984 576 • 577 • 176 • 177 • 178

Pictures

  • block diagram

    block diagram

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