176: Difference between revisions

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 Tektronix 176 Manual (OCR) Tektronix 176 Description in 1971 Catalog (OCR) (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

@@ Line 1: / Line 1: @@
-[[File:Tek-176-3q.jpg|right|thumb|350px|Tektronix 176 fixture]]
+{{Plugin Sidebar
+|manufacturer=Tektronix
+|series=576
+|type=176
+|summary=High-current test fixture
+|image=Tek-176-3q.jpg
+|caption=Tektronix 176 high-current test fixture
+|introduced=1970
+|discontinued=(?)
+|designers=Jim Knapton;
+|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.
-Peak collector supply current is 200A, peak base supply current is 20A.
+The 176 can be considered a more modern replacement for the [[175]]. Both can supply collector currents up to 200 A.
-* [http://w140.com/tek_176_1971_cat.pdf Tektronix 176 Description in 1971 Catalog (PDF)]
+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).
+{{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}}
+==Links==
+{{Documents|Link=176}}
+{{PatentLinks|176}}
 ==Pictures==
 <gallery>
-File:Tek-176-in-576.jpg
+Tek-176-in-576.jpg
-File:Tek-176-3q.jpg
+Tek 176 block.png|block diagram
-File:Tek-176-front.jpg
+tek_176_1.jpg
-File:Tek-176-left.jpg
+tek_176_2.jpg
-File:Tek-176-right.jpg
+tek_176_3.jpg
-File:Tek-176-back.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-front.jpg
+Tek-176-left.jpg
+Tek-176-right.jpg
+Tek-176-back.jpg
 </gallery>
 [[Category:Introduced in 1971]]
-[[Category:Curve tracers]]
+[[Category:Curve tracer plugins]]
-[[Category:Manual needed]]