What device converts current signals to pneumatic signals and vice versa?

The device that converts current signals to pneumatic signals and vice versa is known as a transducer. In the context of power engineering, transducers play a crucial role in interfacing electrical systems with pneumatic systems by translating one form of signal into another. This conversion is essential for various control applications, where it can be important to relay information about pressure, flow, or other mechanical parameters via pneumatic signals.

Transducers can work in both directions: they can take an electrical current signal and convert it into a pneumatic signal for use in systems such as actuators or controllers that operate on compressed air, and they can also take a pneumatic signal and convert it back to an electrical signal for monitoring or control purposes. This bidirectional functionality is key to integrating different types of systems in power engineering and process control.

Other devices, such as converters or inverters, focus more on converting electrical signals between different forms (like AC to DC or vice versa), while transformers specifically deal with changing voltage levels in electrical circuits, making them unsuitable for the requirement of converting between electrical and pneumatic signals.