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
1. According to the purpose classification, it can be divided into two types: functional type and control type relay. Flash relays such as wiper relays are functional relays, and ordinary relays that simply turn the circuit on and off are controlled relays. 2. According to the contact status, it is... read more
According to the principle of action 1. A relay that produces a predetermined response by the relative motion of mechanical components under the action of current in the input circuit.It includes DC electromagnetic relay, AC electromagnetic relay, magnetic holding relay, polarization relay, reed re... read more
Electromagnetic relays (EMR) have been in use for over 150 years since the initial use of telephone relays. Along with the development of the electronics industry, especially the breakthrough of optical coupling technology in the early 1970s, solid-state relays (SSRs, also known as electronic relay... read more
There are four test methods for single-phase relay. There are many test methods for power relays in common relays. Relays are also often used in various industries, such as automobiles, electrical and electronic products. The role of relays is to protect circuits. , limit the current, can achieve t... read more
Magnetic retention relay works:The magnetic holding relay is composed of a core, a coil, an armature, a contact spring, and the like. A certain voltage is applied to both ends of the coil, and a certain current flows through the coil, thereby generating an electromagnetic effect. Under the action o... read more
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