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Why use a relay?
Why use a relay?
High Reliability
1. Strong Shock Resistance: Due to its structural characteristics and materials used, the relay has strong shock resistance. Even when subjected to intense external shocks, the relay can still function normally without being affected, thereby ensuring the stability and reliability of the switching power supply.
2. Long Lifespan: Thanks to the superiority of its structure and materials, the lifespan of the relay is much longer than that of general electronic components. Compared to typical electronic components, the service life of a relay can reach hundreds of thousands of operations, thus guaranteeing the reliability of the switching power supply.
3. Low Power Consumption: The relay has low power consumption, which means it requires less energy when in use. This effectively reduces the energy consumption of the switching power supply and also ensures its reliability.
Controlling Power Output
1. Safety: A relay, consisting of a small electromagnetic coil and a switch, can support high-voltage power sources. Only a small amount of current flows through the coil, protecting users from high voltage hazards and significantly enhancing safety.
2. Tolerance: Relays can withstand a large number of switching operations and have high reliability, making them ideal for frequent and repetitive switching scenarios.
3. Reliability: Relays can extend the lifespan of power switches and are resistant to electromagnetic interference, minimizing the impact of external electromagnetic disturbances.
4. Control Precision: Relays can precisely control power output according to user needs, fulfilling requirements for exceptional accuracy.
Remote Control
1. Achieve long-distance control: Relays can achieve long-distance control, allowing users to remotely control the opening or closing of the switch power supply without needing to be near it, greatly facilitating user operation.
2. No external energy required: Relays can be activated by an external power source, eliminating the need for additional energy, thereby significantly reducing the cost of using the switch power supply.
3. High-precision control: The control precision of relays is very high, enabling precise control over the opening or closing of the switch power supply. This allows users to better manage the switch power supply, making its use more safe and reliable.
High Output Voltage
1. Supports high voltage output: Due to the special structure of the relay, it can withstand high output voltages, supporting switch power supply output voltages at higher levels to meet circuit voltage requirements.
2. Improves the reliability of the switch power supply: Since the relay can withstand higher voltages, it can improve the reliability of the switch power supply, ensuring stability under higher voltage outputs.
3. Protects the circuit: The relay can act as a protective device, preventing damage to the circuit when the switch power supply's voltage is too high or too low.
Low Power Consumption
1. Low power consumption: The power consumption of a relay refers to the power required when the load of the relay is activated in the control circuit. Generally, the power consumption of a relay ranges from several milliwatts to tens of watts, which is much less compared to ordinary circuit components. 2. Controlling high current: Relays can control high currents and are suitable for controlling large-capacity switch power supplies. For example, a relay can control currents of thousands of watts, while ordinary circuit components can only control currents of a few watts. 3. Simple structure: A relay consists of only a few electronic components, making its structure simple. It only requires a simple control circuit to achieve high current control. In contrast, ordinary circuit components require complex control circuits to achieve high current control.
Simple and Convenient Operation
1. Safe Operation: Relays possess excellent high-voltage isolation capabilities, effectively isolating high-voltage power sources from low-voltage circuits, thereby ensuring the safety of the low-voltage side circuits and personnel.
2. Reliable Operation: Relays can switch according to control signals, achieving automated control that is reliable and capable of operating for extended periods without human error.
3. Flexible Operation: Relays can achieve different control effects based on varying control signals. For instance, in a switching power supply, different control signals can adjust the output voltage, offering high operational flexibility without the need to replace circuits, thus saving on equipment costs.


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