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The '''Tektronix 570''' is a curve tracer for tubes. It sweeps the plate voltage between zero and a selectable maximum voltage | The '''Tektronix 570''' is a curve tracer for tubes. | ||
It was 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. | while "stepping" the control grid through a set of voltages. | ||