Electromechanics is a specialist area associated with electrical engineering, which has the content of converting electrical to mechanical energy and vice versa. Mechanical processes are not generated in the electromechanics by means of fluids, as is the case in hydraulics and pneumatics, but by means of electric drives and magnetism. Hydraulic drives have been preferred for a long time, especially for demanding tasks, such as transporting heavy loads. However, electromechanical drives are now also good, if not better, for this purpose. Compared to hydraulic drive systems, they are often smaller and lighter in size, because they only have an electric motor and do not require pumps, tanks, pipes and other components typical of hydraulic systems. Electrical drives operate more quietly, have a larger speed range and are suitable for tasks requiring precise positioning. In addition, electromechanical components can be embedded more easily in electronic controls than hydraulic ones. Many companies have recognized this and are increasingly using electromechanical drives for production and production purposes.

Electromechanical components form the basis of an electromechanical system. No electrically operated device would work without it. There are a variety of electromechanical components, each designed for special applications. Circuit boards, are used, for example, to secure components of an electronic circuit in a specific arrangement and to establish an electrical connection between them. They consist of an insulating material, usually fiber-reinforced plastic, and have a thin copper layer on the underside. The components, such as transistors, capacitors or resistors, are either soldered to the circuit board or simply plugged on, if this is a breadboard.

Mechanical processes are often generated in electromechanics using magnetism. Speakers, for example, are equipped with electromagnets and permanent magnets that attract and repel each other, thereby moving the loudspeaker membrane. Electrical signals are thus converted into mechanical vibrations and finally converted into acoustic signals.

Magnets are found in many other electromechanical applications, for example in bells, door-buzzer and similar electrical installations.

Magnetism also plays a role in the development of electromechanical relays (EMR). These are two-position switches that can be used to switch a circuit on and off. The function is based on electromagnetic force generated in a coil. Depending on the type of contacts (NC or NO), the circuit is established or interrupted. Relays are used to switch load circuits and can serve as switching amplifiers. A well-known example is the automotive relay.

Switches and pushbuttons are used to control electromechanical applications. They can be used to open, maintain and close electrical connections. There are manually operated switches such as shift or tilt and rocker switches and those that can be operated without manual action by means of special mechanics, magnetic force, temperature or position changes. An example of position switches are limit switches that trigger the switching process when a certain end position is reached and, for example, interrupt the power supply. The so-called contactors are a special form of switches.

An electromechanical contactor is very similar to a relay in terms of its design and operation, but designed for higher switching power and can provide a greater mechanical switching force. For this reason, contactors are ideal for high-performance applications and are primarily used in industry. Although their name suggests something else at first glance, contactors do not provide protection against overload or short circuits.

Before purchasing, it is important to consider which electromechanical component is best suited for the particular application. Contactors, for example, are available in several designs.

While contactors can be used in a wide range of applications, reversing contactors are particularly suitable for special applications, for example in conjunction with three-phase motors. Solid state contactors are the right choice when fast switching and low-noise operation is required, and are used in motion, heating, power and lighting control, among other things.

For example, the selection of acoustic components is also extensive. If you choose to purchase a transducer or small speaker, you must pay attention to the required voltage, impedance (AC resistance in ohms), and resonance frequency (specified in hertz). However, the level of noise (specified in decibels) and the tone type (continuous, interval or siren tone) must also be determined in advance.