107: Difference between revisions
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The Tektronix 107 is a squarewave generator. It was intended to be used for calibration | The Tektronix 107 is a squarewave generator. It was intended to be used for calibration | ||
of oscilloscopes. It is designed to provide a clean waveform with fast edges and flat | of oscilloscopes. It is designed to provide a clean waveform with fast edges and flat | ||
tops. The signal starts with an astable | tops. The signal path starts with an astable | ||
multivibrator composed of both halves of a 6BQ7A dual triode tube. The multivibrator | multivibrator composed of both halves of a 6BQ7A dual triode tube. The multivibrator | ||
circuit is cathode coupled to a pulse shaping circuit, and then to an output stage | circuit is cathode coupled to a pulse shaping circuit, and then to an output stage | ||
Revision as of 14:40, 2 July 2011
The Tektronix 107 is a squarewave generator. It was intended to be used for calibration of oscilloscopes. It is designed to provide a clean waveform with fast edges and flat tops. The signal path starts with an astable multivibrator composed of both halves of a 6BQ7A dual triode tube. The multivibrator circuit is cathode coupled to a pulse shaping circuit, and then to an output stage made from a single 6AU6 tube with a 50-ohm plate load, providing a controlled 50-ohm output impedance. The 50-ohm plate load keeps the voltage gain of output stage low, and the bandwidth high.
The manual is here:
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Output, C94, R94, and R95
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