Q
The Tektronix Type Q is a transducer and strain gauge preamp plug-in for 500-series scopes.
It can work with resistive, capacitive, or inductive transducers or strain gauges that are attached via an Amphenol 165-15 connector.
The plug-in contains a 25 kHz oscillator that is used to drive a Wheatstone bridge. This AC excitation / demodulation principle limits signal bandwidth to 6 kHz.
Type Q was introduced in 1960 and was the last all-tube plug-in. It was dropped after 1972.
Specifications
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Pictures
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Front view
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Top view.
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Left view.
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Right view.
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Bottom view.
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Block Diagram
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Schematic
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Rotan plug-in prototype, likely led to Type Q
Some Parts Used in the Q
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 12AU7 | 154-041 • 154-0041-00 • 154-0287-00 | Vacuum Tube (Dual Triode) | dual medium-μ triode | 104 • 104A • 122 • 160 • 161 • 162 • 181 • 190 • 310 • 310A • 316 • 317 • 3C66 • 502 • 502A • 507 • 511A • 512 • 516 • 517 • 517A • 524 • 526 • 535 • 536 • 545 • 545A • 545B • 547 • 549 • 555 • 561 • 564 • 570 • 575 • 581 • 581A • 585 • 585A • C • D • E • N • Q • Hickok 1825 |
| 12AX7 | 154-043 • 154-0043-00 | Vacuum Tube (Dual Triode) | dual triode | 3C66 • 513 • 524 • 531 • 531A • 535 • 536 • 545 • 545A • 545B • 546 • 547 • 549 • 555 • 570 • 581 • 581A • 585 • 585A • E • Q • Hickok 1825 • Keithley 610 |
| 6AU6 | 154-0022-00 • 157-0073-00 • 157-0059-00 • 154-0284-00 | Vacuum Tube (Pentode) | RF pentode | 107 • 160 • 181 • 190 • 60 • 2A60 • 72 • 3A72 • 3C66 • 310 • 310A • 316 • 317 • 360 • 502 • 502A • 506 • 511 • 511A • 512 • 513 • 516 • 517 • 517A • 524 • 526 • 529 • RM529 • 531 • 531A • 535 • 536 • 545 • 545A • 546 • 547 • 549 • 555 • 561 • 561A • 561S • 564 • 565 • 567 • 570 • 575 • 581 • 581A • 585 • 585A • 80 • C • CA • Q |
| 6CG7 | 154-0134-00 | Vacuum Tube (Dual Triode) | dual triode | 3C66 • 575 • Q |
| 8425 | 154-0022-07 | Vacuum Tube (Pentode) | RF pentode | 3A72 • 310A • 317 • 526 • Q |