Herth+Buss electrical components Germany Herth+Buss model Herth+Buss price

Herth+Buss electrical components are indispensable measuring instruments for departments such as power electronics, generally with the main purpose of measuring voltage, current, and resistance. Multimeters are divided into analog multimeters and digital multimeters according to the display method. It is a multi-function, multi-range measuring instrument. General multimeters can measure DC current, DC voltage, AC current, AC voltage, resistance, and audio levels, etc. Some can also measure AC current, capacitance, inductance, and some semiconductor parameters (such as β). A multimeter is a magnetoelectric instrument with a rectifier that can measure various electrical parameters such as AC/DC current, voltage, and resistance. For each electrical quantity, there are generally several ranges. Also known as a multi-meter or simply multi-meter. A multimeter consists of a magnetoelectric ammeter (meter head), measuring circuit, and selector switch. Through the switching of the selector switch, various electrical parameters can be measured conveniently. The main basis for its circuit calculation is Ohm's law for closed circuits. There are many types of multimeters, and selection should be made according to different requirements during use.

Herth+Buss electrical component characteristics

Under normal circumstances, the actual static characteristic output of a sensor is a curve rather than a straight line. In practical work, in order to enable the instrument to have uniformly scaled readings, a fitted straight line is often used to approximately represent the actual characteristic curve. Linearity (non-linear error) is a performance indicator of this degree of approximation. There are various methods for selecting the fitted straight line. For example, the theoretical straight line connecting the zero input and full-scale output points is used as the fitted straight line; or the theoretical straight line with the minimum sum of squared deviations from each point on the characteristic curve is used as the fitted straight line, which is called the least squares fitted straight line.

Herth+Buss electrical component principle

The structure of a mercury switch is very simple. The outside is a sealed cylindrical insulating housing, inside which is filled with about one-fifth mercury. At one end of the housing, two wires leading out from the inside are fixed. This is a mercury switch. Due to gravity, the mercury bead flows to the lower part of the container. If it contacts both electrodes simultaneously, the switch will close the circuit, turning the switch on. The shape of the container also affects the conditions under which the mercury bead contacts the electrodes.

Herth+Buss electrical component types

There are many types of loudspeakers. According to their transduction principle, they can be divided into electrodynamic (moving coil), electrostatic (capacitive), electromagnetic (reed), piezoelectric (crystal), etc. The latter two are mostly used in rural wired broadcasting networks. According to frequency range, they can be divided into low-frequency, mid-frequency, and high-frequency loudspeakers, which are often used as combination loudspeakers in speaker boxes. According to transduction mechanism and structure, they are divided into moving coil (electrodynamic), capacitive (electrostatic), piezoelectric (crystal or ceramic), electromagnetic (spring-loaded), ionophone, and pneumatic loudspeakers. Electrodynamic loudspeakers have advantages such as good electro-acoustic performance, sturdy structure, and low cost, and are widely used. According to sound radiation material, they are divided into cone, horn, and diaphragm types. According to cone shape, they are divided into circular, oval, double cone, and rubber surround. According to operating frequency, they are divided into bass, midrange, and treble. Some are further divided into recorder-specific, TV-specific, general, and hi-fi loudspeakers. According to voice coil impedance, they are divided into low impedance and high impedance. According to effect, they are divided into direct radiation and ambient sound. Loudspeakers are divided into built-in and external loudspeakers, with external loudspeakers referring to what is generally known as speaker boxes. Built-in loudspeakers mean that the MP4 player has built-in speakers, so users can listen to the sound emitted by the MP4 player not only through the headphone jack but also through the built-in speakers. MP6 players with built-in speakers can operate without external speakers and avoid the inconvenience of wearing headphones for long periods.

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