User's Manual
Moog Components Group • www.moog.com/components
 7
Transducers
Transducers have been employed on both 
military and commercial aircraft to provide 
position  feedback  information  of  flight 
control  surfaces  to  the  ight  computers, 
autopilots and cockpit displays.
Model 800-XX
Our Model 800 Series Position 
Transmitter monitors the stabilizer position 
of the Boeing 757 and 767 commercial 
aircraft.
• Input voltage: 28 VRMS, 400 Hz
• Position switches (up to 6)
• Rotary variable differential transformer 
(RVDT)
• 1 speed synchro
• Flame arrestor
• Anti-backlash gearing
• Robust structural design
• High efciency steel gearing
• Size: 4 inch OD x 5.2 inches long
Model 932-02
The Model 932-02 is designed for shaft 
position sensing such as aileron and 
elevator cable position on the C5 military 
transport.
• Input voltage: 26 VAC, 400 Hz
• Consists of 3 synchros and input shaft
• 1:1 gearing
• Single electrical connector for interfacing
  the excitation voltages and the synchro 
   output signals     
Linear Actuators - Ampliers - Transducers
Model 933-01
The ap position 
transducer is used in 
C-5 military transports 
to convert the 
mechanical position of 
the aps to appropriate 
electrical signals for position indication.
•  Input voltage: 26 VAC, 400 Hz
• Consists of 2 synchros and input shaft
• 4:1 gearing
• Single electrical connector for interfacing  
 the excitation voltages and the synchro      
 ouput signals
Model 943-XX
The Model 943 Position 
Transmitter monitors 
the stabilizer position 
of the Boeing 747- 400 
commercial aircraft.
• Input voltage: 28 VRMS, 400 Hz
• Rotary variable differential transformer 
  (RVDT)
• 1 speed synchro
•  Flame arrestor
• Anti-backlash gearing
• Robust structural design
• High efciency steel gearing
Model 976
The Model 976 position transducer 
monitors the position of the nacelle of 
an unmanned aerial vehicle (UAV).
• Voltage 6 VAC, 3000 Hz
• 5:4 gearing
• Consists of two rotary variable   
  differential transformers (RVDT)
• Single electrical connector for   
  interfacing the excitation voltages and  
  RVDT output signals
• Size: 3.88 x 4.75 x 14.75 inches long 
• Power: 28 VDC
• Rated power point: 1500 lb @ 0.26 in/sec
• Weight: 8.1 lbs
• Two NFeB Permanent Magnet DC brush 
motors
• Two failsafe electromagnetic brakes
• Robust structural design
• Low endplay
• High efciency steel gearing
• Trunnion mount for xed end and traveling 
nut endtting
• Ball screw/nut power screw assembly
• Stroke: 7.25 inches electrical stroke 
• No-load speed: 0.87 in/sec
Ampliers
Amplifiers  are  used  to 
control the actuators when 
the  drive  electronics  are 
located seperately outside 
the actuators.
Model 871-01
150 VDC transconductance amplier
used with the Model 873 Rotary Actuator.
Model 911-01
270 VDC brushless motor controller for a 
pump system on a military armored vehicle.
Model 944-01
150 VDC transconductance amplier
used with the Model 875 Rotary Actuator.
Model 962-01
150 VDC transconductance amplier
used with the Model 961 Rotary Actuator.
Linear Actuators / Ampliers / Transducers








