107: Difference between revisions
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50-ohm output impedance. The 50-ohm plate load keeps the voltage gain of output stage | 50-ohm output impedance. The 50-ohm plate load keeps the voltage gain of output stage | ||
low, and the bandwidth high. | low, and the bandwidth high. | ||
The manual is here: | |||
*http://w140.com/kurt/tek_107.pdf | |||
Revision as of 19:55, 12 March 2010
The Tektronix 107 is a squarewave generator. The signal 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: