Article List
- How to choose relays?How do I choose a relay?Depending on the application, the power you are using and the size and function of the device, you can choose between different types of electromagnetic relays.To test an electromagnetic relay, you can use a regulated power supply and an ammeter to monitor the voltage and cur
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- Access Control Card ReaderThe non-contact IC card (inductive IC card) card reader that is disabled by the door is an important part of the access control system and the key device for the signal input of the access control system.
- Matters Needing Attention When Purchasing RelaysMatters Needing Attention When Purchasing Relays
- What are the common roles of relays?What are the common roles of relays? The number of industries using relays is increasing, so what are the different characteristics of relays in each field? 1. Household appliances: air conditioning relays are mainly used to control shrink machine motors, fan motors and cooling pump motors to perfor
- The concept of bridge rectifier and related knowledgeThe concept of bridge rectifier and related knowledge The concept of bridge rectifierBridge rectifier is a rectifier tube enclosed in a housing. There are full bridges and half bridges. A full bridge is a connected bridge rectifier circuit with four diodes sealed together. A half bridge is a bridge
- How does a magnetic lock work?Magnetic lock is also called electromagnetic lock. Its design is the same as that of electromagnet. It uses the principle of current to generate magnetism.
- Vehicle Loop Sensor Installation PrecautionsThe principle and characteristics of infrared sensor switchInfrared sensor switchThe full name of infrared sensor switch is pyroelectric infrared sensor switch. Any object in nature, as long as the temperature is higher than absolute zero (-273°C), always emits infrared radiation continuously. The h
- Factors of bridge rectifier damageFactors of bridge rectifier damage Generally the heat sink is not large enough, the overload inrush current is too high and the heat is not dissipated. 1. Load short circuit, bad insulation. Caused by excessive load current. 2. Frequent starting and stopping of the power supply, if the inductive l