The Two Place Trim Mixer is solid-state equipment designed to replace the traditional mechanical relays earlier used for two pilots to operate the aircraft's trim system while adding the advantages of logic functions found in electronic equipment. The mixer incorporates MOSFET (Metal Oxide Silicon Field Effect Transistor) transistors for switching the high current with no moving parts and no electrical arc to prevent fuel fumes ignition. The trim system is formed of the following elements: A mixer unit and the following which should be provided by the user: -Two "Chinese Hat" switches on both front and rear sticks (or left and right sticks). -Two DC trim motors (such as the MAC Servo with or without connections to position indicator) -Harnesses -An SPST switch (option)
Prevention of a conflict between two opposite inputs (eg. "Up" by the pilot and "Down" by the co-pilot). Once input is established by one of the crew, another input is ignored. An additional switch (option) enables the pilot to "Disable" the co-pilot from input any command to the trim motors.
No. of Operators: 2
Operating Voltage: 10VDC to 16VDC
Max Current: 7A
Quiescent Current: Less than 4mA
Current Through any Switch Contact: Less than 10µA