The Woodward 9905-969 is an analog speed control and governor module that provides precise speed regulation for various prime movers including diesel engines, gas turbines, and steam turbines. This module operates using analog circuitry to maintain closed-loop control by continuously monitoring the actual speed of the equipment through magnetic pickups or tachometers and comparing it with the desired setpoint. It then generates corrective output signals to adjust fuel supply or actuator positions, ensuring stable operation during load variations, startups, and shutdown sequences. The module is designed for rugged industrial environments and offers excellent noise immunity, thermal stability, and reliable performance. It is typically used in power generation applications, mechanical drive systems, and process industries where precise speed control is critical. The 9905-969 module is compatible with Woodward's governor systems and can be easily integrated into existing control panels. Its analog design provides simplicity of operation and maintenance while delivering consistent performance without requiring complex digital programming.

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