Le labo de Michel | LDM #316: Bendix Compass Coupler 16093-1A - Part 1: Teardown @lelabodemichel5162 | Uploaded 1 year ago | Updated 2 hours ago
Errata at 13:30: the servo amplifier is a classic amplifier as the input voltage of this amplifier comes from the rotor of the control transformer with the stator connected to the external horizontal gyro. The control transformer gives an error voltage at 400Hz which is amplified and fed to the servomotor. It uses a push-pull configuration using two 6AK6 pentotes and a subminiature double triode JAN6112 as amplifier and phase shifter.
00:00 - Intro
01:12 - Teardown
02:05 - Electronic modules
06:31 - Electromechanical assembly
09:09 - Output linearity correction
10:02 - Difference with Bendix Polar Path Coupler
11:23 - In search for the differential gear
12:07 - Flux detector input
13:28 - Servo Amplifier (not magnetic)
This video shows the teardown of a vintage Bendix Compass Coupler 16093-1A. This instrument uses vacuum tubes for the electronic modules (6AK6, 12AT7, OB2, one miniature unknown at this time).
Modules (to be confirmed):
* Servo amplifier for the output servomotor
* Power supply
* Slaving amplifier
The functioning seems similar to that of the Bendix Polar Path Coupler. The output shaft with several synchro transmitters attached to it is the sum of two data angles:
* The gyro heading using a magnetic servo amplifier
* A drift correction using a second motor with an electrically selectable gear box which permits the selection between a fast and normal operation modes. A synchro transmitter connected to the flux detector gives the difference between the output heading and the compass heading. The 800Hz error voltage present on the rotor is fed to the slaving amplifier which drives the correction motor.
useful links:
LDM #281: Sperry Compass Computer MK9
youtu.be/aH1cMq08a5s
LDM #298: Bendix Compass Coupler
youtu.be/yq4rvDhAbGE
JAN6112 datasheet:
frank.pocnet.net/sheets/137/6/6112.pdf
6AK6 datasheet:
frank.pocnet.net/sheets/155/6/6AK6.pdf
Errata at 13:30: the servo amplifier is a classic amplifier as the input voltage of this amplifier comes from the rotor of the control transformer with the stator connected to the external horizontal gyro. The control transformer gives an error voltage at 400Hz which is amplified and fed to the servomotor. It uses a push-pull configuration using two 6AK6 pentotes and a subminiature double triode JAN6112 as amplifier and phase shifter.
00:00 - Intro
01:12 - Teardown
02:05 - Electronic modules
06:31 - Electromechanical assembly
09:09 - Output linearity correction
10:02 - Difference with Bendix Polar Path Coupler
11:23 - In search for the differential gear
12:07 - Flux detector input
13:28 - Servo Amplifier (not magnetic)
This video shows the teardown of a vintage Bendix Compass Coupler 16093-1A. This instrument uses vacuum tubes for the electronic modules (6AK6, 12AT7, OB2, one miniature unknown at this time).
Modules (to be confirmed):
* Servo amplifier for the output servomotor
* Power supply
* Slaving amplifier
The functioning seems similar to that of the Bendix Polar Path Coupler. The output shaft with several synchro transmitters attached to it is the sum of two data angles:
* The gyro heading using a magnetic servo amplifier
* A drift correction using a second motor with an electrically selectable gear box which permits the selection between a fast and normal operation modes. A synchro transmitter connected to the flux detector gives the difference between the output heading and the compass heading. The 800Hz error voltage present on the rotor is fed to the slaving amplifier which drives the correction motor.
useful links:
LDM #281: Sperry Compass Computer MK9
youtu.be/aH1cMq08a5s
LDM #298: Bendix Compass Coupler
youtu.be/yq4rvDhAbGE
JAN6112 datasheet:
frank.pocnet.net/sheets/137/6/6112.pdf
6AK6 datasheet:
frank.pocnet.net/sheets/155/6/6AK6.pdf
