boehm electrical components Germany boehm model boehm price

boehm electrical components utilize the good conductivity and fluidity of mercury to control the opening and closing of electrical circuits. They consist of a glass tube, mercury, fixed electrodes, lead wires, etc. After evacuating the air from the tube, it is filled with various gases and sealed. It is suitable for environments with dust, oil, water vapor, and corrosive gases, and can also be used as an explosion-proof switch in places with explosive gases. Given the high surface tension and specific gravity of the mercury inside the tube, along with its fluidity, the position of the mercury changes immediately with even a slight tilt of the glass tube, and it contacts the electrodes via surface contact, thus enabling the switching of high AC and DC currents. Additionally, this type of switch features a service life of several million cycles at rated current, compact size, high sensitivity, no mechanical noise, and low cost, making it widely used as a switch for automatic control.

boehm electrical component principle

A diesel engine drives the generator to operate, converting the energy of diesel into electrical energy. Inside the diesel engine cylinder, clean air filtered through the air filter mixes thoroughly with high-pressure atomized diesel injected from the nozzle. Under the compression of the upward-moving piston, the volume decreases, and the temperature rises rapidly to reach the ignition point of diesel. The diesel ignites, causing the mixed gas to burn vigorously and expand rapidly, pushing the piston downward, known as the "power stroke." A gasoline engine drives the generator to operate, converting the energy of gasoline into electrical energy. Inside the gasoline engine cylinder, the mixed gas burns vigorously, expands rapidly, and pushes the piston downward to perform work. Whether it is a diesel generator or a gasoline generator, each cylinder performs work in a certain sequence. The thrust acting on the piston is converted into force that rotates the crankshaft via the connecting rod, thereby driving the crankshaft to rotate. By mounting a brushless synchronous AC generator coaxially with the prime mover's crankshaft, the rotation of the prime mover drives the rotor of the generator. Based on the principle of 'electromagnetic induction,' the generator outputs induced electromotive force, which generates current through a closed load circuit.

boehm electrical component function

When the distance between the observer or system and the wave source changes, the frequency of the approaching waves shifts; this phenomenon is called the Doppler effect. Sonar and radar are developed based on this principle. The Doppler effect can be used to manufacture ultrasonic proximity switches, microwave proximity switches, etc. When an object approaches, the reflected signal received by the proximity switch undergoes a Doppler frequency shift, allowing the detection of whether an object is approaching. Proximity switches are widely used in aviation, aerospace technology, and industrial production. In daily life, they are applied in automatic doors in hotels, restaurants, and garages, as well as in automatic hot air blowers. For security and anti-theft purposes, important locations such as archives, accounting departments, financial institutions, museums, and vaults are typically equipped with anti-theft devices composed of various proximity switches. In measurement technology, such as for length and position measurements, and in control technology, such as for the measurement and control of displacement, speed, and acceleration, a large number of proximity switches are also used.

boehm electrical component composition

1. Wiring harnesses are designed to facilitate installation and maintenance, ensuring that electrical equipment can operate under the harshest conditions. Wires of different specifications and colors used by various electrical equipment in the vehicle are reasonably arranged and integrated into a single unit, bundled with insulating material to form a complete and reliable harness. 2. Normal selection of wire cross-sectional area and color codes: ① Correct selection of wire cross-sectional area: Electrical equipment in the vehicle selects the wire cross-sectional area based on the magnitude of the load current. For electrical equipment operating for long durations, 60% of the actual current-carrying capacity of the wire can be selected; for electrical equipment operating for short durations, 60%-107% of the actual current-carrying capacity can be used. ② Selection of wire color codes: To facilitate identification and maintenance, wires in the harness use different colors. For easy annotation in circuit diagrams, wire colors are represented by letters, with the corresponding colors noted in each circuit diagram.

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