191: Difference between revisions
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==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
Tek_191_front.jpg|Front view | |||
Tek_191_top.jpg|Top internal view | |||
Tek_191_bottom.jpg|Bottom internal view | |||
Tek_191_left.jpg|Left internal view | |||
Tek_191_right.jpg|Right internal view | |||
Tek_191_rear.jpg|Rear view | |||
191.png|Schematic | |||
</gallery> | </gallery> | ||
[[Category:Signal generators]] | [[Category:Signal generators]] | ||
[[Category:Introduced in 1966]] | [[Category:Introduced in 1966]] | ||
[[Category:GR874]] | |||
Revision as of 04:06, 4 August 2018
The Tektronix Type 191 Constant Amplitude Signal Generator is a sine wave source introduced in 1966.
Key Specifications
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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
