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baumer ivo 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 parameters of semiconductors (such as β), etc. 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, etc. 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 they should be selected according to different requirements during use.

baumer ivo electrical component features

A mercury switch achieves switching on and off by moving mercury encapsulated in a glass or metal housing. Therefore, compared with mechanical switches, mercury switches have many characteristics: (1) Can be used in harsh environmental conditions. Since the mercury switch is sealed, the internal mercury is isolated from the outside, so it can be used in environments with oil, steam, dust, and corrosive gases. (2) Small external force required for switching. Mercury is the only metal that remains liquid at room temperature. Its surface tension and specific gravity are relatively large. As long as a slight external force tilts the mercury switch, the mercury moves, enabling the switch to turn on or off. (3) Mercury has good conductivity, and the contact resistance between the electrodes of the mercury switch is generally very small. (4) The current allowed to pass through the mercury switch depends on the electrode material. (5) Since the on/off state of the mercury switch is determined by the gravity of the mercury, it can work reliably for a long time. (6) The electrode contacts are liquid contacts, with no noise. (7) Since mercury can flow, as long as the acceleration exceeds the set value, the mercury switch can turn on or off, so it can be used as a vibration-sensitive element. (8) Small size, diverse forms, and fully sealed devices. (9) Simple structure and low price. (10) High quality, premium products, suitable for beginners.

baumer ivo electrical component principles

Generators can convert mechanical energy into electrical energy, and dry cells can convert chemical energy into electrical energy. Generators and batteries themselves are not charged; their two poles have positive and negative charges respectively, generating voltage from these charges (current is formed by the directional movement of charges under the action of voltage). Charges already exist in conductors; to generate current, only voltage needs to be applied. When conductors are connected to the two poles of a battery, positive and negative charges are released to generate current. When the charges are exhausted, the current (and voltage) disappears. Dry cells and the like are called power sources. A device that converts AC into DC through transformers and rectifiers is called a rectified power supply. Electronic devices that can provide signals are called signal sources. Crystal transistors can amplify the signal sent from the previous stage and transmit the amplified signal to the subsequent circuit. For the subsequent circuit, the crystal transistor can also be regarded as a signal source. Rectified power supplies and signal sources are sometimes also called power sources.

baumer ivo electrical component principles

The Hall voltage changes with the magnetic field strength; the stronger the magnetic field, the higher the voltage; the weaker the magnetic field, the lower the voltage. The Hall voltage value is very small, usually only a few millivolts, but after amplification by the amplifier in the integrated circuit, the voltage can be amplified enough to output a stronger signal. To make the Hall integrated circuit act as a sensor, mechanical methods are needed to change the magnetic field strength. A rotating impeller is used as a switch to control magnetic flux. When the impeller blades are in the air gap between the magnet and the Hall integrated circuit, the magnetic field deviates from the integrated chip, and the Hall voltage disappears. In this way, the change in the output voltage of the Hall integrated circuit can indicate a certain position of the impeller drive shaft. Using this working principle, the Hall integrated circuit chip can be used as an ignition timing sensor. Hall effect sensors belong to passive sensors; they require an external power supply to work. This characteristic enables them to detect low-speed operation conditions.

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