3C66: Difference between revisions
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This limitation is due to the settling time of the envelope detector. | This limitation is due to the settling time of the envelope detector. | ||
In addition to the vertical deflection signal, the 3C66 provides a front panel output of the measured signal. | In addition to the vertical deflection signal, the 3C66 provides a front panel output of the measured signal. | ||
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{{Documents|Link=3C66}} | |||
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{{Parts|3C66}} | |||
[[Category:560 series plugins]] | [[Category:560 series plugins]] | ||
Latest revision as of 04:45, 29 November 2023
The Tektronix 3C66 Carrier Amplifier is a plug-in for 560-series scopes, introduced in 1963.
It is designed to amplify signals from transducers such as strain gauges, whose impedance varies based on, for example, mechanical strain. These transducers are usually connected in a bridge circuit.
The 3C66 drives the bridge with a 25 kHz "carrier" signal, which is modulated by the relative impedances of the arms of the bridge. The resulting signal is amplified and envelope-detected by the 3C66, producing a vertical deflection proportional to the measured quantity (strain, for example).
The 3C66 provides built-in variable impedances for balancing the bridge. Because the carrier is 25 kHz, the maximum bandwidth of the measured quantity is 5 kHz. This limitation is due to the settling time of the envelope detector. In addition to the vertical deflection signal, the 3C66 provides a front panel output of the measured signal.
Key Specifications
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Links
Documents Referencing 3C66
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schematic
Components
Some Parts Used in the 3C66
| 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 |
| 7247 | 154-0257-00 | Vacuum Tube (Dual Triode) | dual triode | 3C66 |