The shunt is used to measure the DC current. It is made according to the principle that the DC current produces voltage at both ends of the resistance when it passes through the resistance. It is made of insulating ceramics with uniformly distributed holes. The protective gas from the welding torch... read more
A shunt is actually a resistance with very small resistance. When a direct current passes through it, a voltage drop is generated for the display of a direct current ammeter.The DC ammeter is actually a voltmeter with a full scale of 75mV.DC ammeter and shunt are used together.For example, the curr... read more
The basic structural components of the electrical connector include: 1.Contact The contact is the core part of the connector to complete the electrical connection function. The contact pair is generally composed of a male contact and a female contact, and the electrical connection is completed by t... read more
Rated operating voltageRefers to the voltage required by the coil when the relay is working normally. Depending on the type of relay, it can be either an AC voltage or a DC voltage.2. DC resistanceRefers to the DC resistance of the coil in the relay, which can be measured by a universal meter.3. Pu... read more
At present, the specifications of the terminal blocks on the market are similar. Whether the products are good or bad, we first look at the appearance. Generally, the plastic surface is smooth and free of burrs and no gaps. The color is pleasing to the eye without yellowing and dullness; the pins a... read more
The labor force of relay production is relatively intensive. Developed countries have shifted the general-purpose relay industry to manufacturing countries with low labor costs such as China. The early domestic enterprises are mostly foreign-funded enterprises or their OEM enterprises, so the inter... read more
In our power facilities, we often use a kind of electrical appliance, which is a relay. It is used in the automatic control circuit. It is a kind of switch for current operation. It has the functions of conversion circuit, automatic regulation and safety protection. Relays have different types depe... read more
Automotive relays are generally electromagnetic or solid. The electromagnetic relay says that the coil is energized to generate a magnetic field that attracts the electric shock and fits the static contact to turn on the circuit. The current mostly used in the solid state generates electrons throug... read more
Optocouplers are also known as opto-isolators or optocouplers, referred to as optocouplers. It is a device that transmits electrical signals by means of light. Generally, an illuminator (infrared light emitting diode (LED)) and a light receiver (photosensitive semiconductor tube) are packaged in th... read more
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