570: Difference between revisions
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|introduced=1955 | |introduced=1955 | ||
|discontinued=(?) | |discontinued=(?) | ||
|designers= | |designers=John Kobbe | ||
|manuals= | |manuals= | ||
* [[Media:070-167.pdf|Tektronix 570 Manual 070-167]] (PDF, OCR, good quality) | * [[Media:070-167.pdf|Tektronix 570 Manual 070-167]] (PDF, OCR, good quality) | ||
Revision as of 12:08, 4 March 2022
The Tektronix 570 was Tek's first curve tracer. It is a curve tracer for tubes, introduced in 1955. It sweeps the plate voltage between zero and a selectable maximum voltage while "stepping" the control grid through a set of voltages.
A selectable screen voltage is available for testing tubes with screens. The plate voltage is measured and applied to the X-axis of the display. Plate current is measured and amplified and is applied to the Y-axis of the display.
Key Specifications
- please add
Internals
The 570 contains five transformers:
- T310: center-tapped isolation transformer for plate sweep
- T340: multitap transformer for heater voltages
- T401: multitap autotransformer for selecting peak plate voltage, feeds T310
- T501: transformer for floating supplies and screen voltage supply
- T620: transformer for 60 kHz HV power oscillator for CRT voltages
The screen supply is regulated and uses a 6CD6GA tube as the series regulator.
The vertical and horizontal amplifiers are almost identical. The first stage is a differential amplifier made of two 6AU6 tubes. The second stage is a differential amplifier made of both halves of a 6BQ7A.
A T52P1 CRT is standard in the 570.
Pictures
Early Tektronix 570 (Brown Era)
Tektronix 570 Serial Number 5010
Tektronix 570 Serial Number 5055
Tektronix 570 Serial Number 5148
Tektronix 570 Serial Number 5429
Adaptors for Different Tube Bases
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12-pin adaptor
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12-pin adaptor
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7-pin miniature adaptor
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7-pin miniature adaptor
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