570: Difference between revisions
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</gallery> | </gallery> | ||
===Adaptors=== | |||
<gallery> | |||
Tek 570 12-pin fixture 1.jpg|12-pin adaptor | |||
Tek 570 12-pin fixture 2.jpg|12-pin adaptor | |||
Tek 570 seven pin miniature adapter 1.jpg|7-pin miniature adaptor | |||
Tek 570 seven pin miniature adapter 2.jpg|7-pin miniature adaptor | |||
</gallery> | |||
[[Category:Curve tracers]] | [[Category:Curve tracers]] | ||
[[Category:Specifications needed]] | [[Category:Specifications needed]] | ||
[[Category:Introduced in 1955]] | [[Category:Introduced in 1955]] | ||
Revision as of 08:18, 17 February 2020
The Tektronix 570 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.
Pictures
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12-pin fixture
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12-pin fixture
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Adaptors
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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
