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* [http://w140.com/mmm/tek-191.pdf Tektronix 191 Manual (PDF)] | * [http://w140.com/mmm/tek-191.pdf Tektronix 191 Manual (PDF)] | ||
* [[Media:TB-9-6625-2176-35.pdf|TB-9-6625-2176-35 - 191 calibration]] | * [[Media:TB-9-6625-2176-35.pdf|TB-9-6625-2176-35 - 191 calibration]] | ||
* [[Media:Tek 191 fcp june 1966.pdf]] | |||
==Pictures== | ==Pictures== | ||
Revision as of 07:05, 8 June 2019
The Tektronix Type 191 Constant Amplitude Signal Generator is a sine wave source introduced in 1966.
Key Specifications
- please add
The 191 covers frequencies from 350 kHz to 100 MHz in seven bands. The output amplitude can be adjusted in calibrated steps from 5 mV to 5 V in three ranges.
Internals
The oscillator is a Colpitts oscillator using a 7119 tube.
A peak-to-peak detector made with two GaAs diodes measures the swing of the oscillator and produces a DC feedback signal that controls a series voltage regulator that supplies power to the oscillator.
The calibration procedure in the manual makes use of a 661 to accurately view the output waveform.
Manuals
Pictures
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Front view
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Top internal view
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Bottom internal view
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Left internal view
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Right internal view
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Rear view
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Schematic
