normally opened

简明释义

常开的

英英释义

例句

1.The gate is normally opened at sunrise for the animals.

大门在日出时通常是打开的，以便动物进出。

2.The valve is normally opened to allow water to flow through.

这个阀门通常是打开的，以允许水流过。

3.In this circuit, the relay is normally opened to prevent current flow.

在这个电路中，继电器通常是打开的，以防止电流流动。

4.The door is normally opened during business hours.

这扇门在营业时间内通常是打开的。

5.This switch is normally opened until it is activated.

这个开关通常是打开的，直到被激活。

作文

In the world of electronics and automation, the term normally opened is frequently used to describe a specific type of switch or circuit configuration. A normally opened switch is one that remains open under normal conditions, allowing no current to flow through it. This means that the circuit is incomplete until the switch is activated, at which point it closes and allows electricity to pass. Understanding how normally opened switches operate is crucial for anyone involved in electrical engineering or related fields.For example, consider a simple light switch in a household. When the switch is in the off position, it is normally opened, preventing electricity from reaching the light bulb. When you flip the switch to the on position, the circuit closes, and the light turns on. This basic principle is applied in various applications, from home lighting to complex industrial machinery.The normally opened configuration is advantageous in many scenarios. It provides a fail-safe mechanism; if there is a power failure or a malfunction, the switch will default to the open position, ensuring that devices do not accidentally turn on and cause potential hazards. This characteristic is particularly important in safety-critical systems where unintended activation could lead to dangerous situations.Moreover, normally opened switches are often used in alarm systems. In these systems, the switch remains open until an event occurs, such as a door being opened or a window being broken. When the event happens, the switch closes, triggering the alarm. This functionality makes normally opened switches ideal for security applications, as they only activate under specific conditions, minimizing false alarms.In contrast, there are also normally closed switches, which remain closed under normal conditions and open when activated. Each configuration serves different purposes, and understanding the distinction between normally opened and normally closed is essential for designing effective electrical systems. For instance, a normally closed switch might be used in emergency stop circuits, where the device should remain operational until a safety condition is triggered.When designing circuits or systems that incorporate normally opened components, engineers must carefully consider the context in which these switches will be used. Factors such as voltage, current rating, and environmental conditions can all impact the performance and reliability of the switch. Additionally, selecting the right type of switch for a given application is critical; using a normally opened switch in a situation that requires a normally closed switch could lead to system failures or safety hazards.In conclusion, the term normally opened refers to a switch or circuit that is open under standard conditions, allowing no current to flow. This configuration is widely used in various applications, from household appliances to industrial systems, due to its safety features and reliability. Understanding the operation and applications of normally opened switches is vital for anyone working in the field of electronics, as it plays a significant role in the design and functionality of electrical systems. As technology continues to evolve, the importance of mastering concepts like normally opened will only increase, paving the way for innovative solutions in automation and control systems.

在电子和自动化的世界中，术语normally opened（常开）经常用来描述特定类型的开关或电路配置。normally opened开关是在正常条件下保持打开状态的开关，因此不会有电流通过。这意味着电路在未激活时是不完整的，此时开关关闭并允许电流通过。理解normally opened开关的操作对任何参与电气工程或相关领域的人来说都是至关重要的。例如，考虑一个家庭中的简单灯开关。当开关处于关闭位置时，它是normally opened，阻止电流到达灯泡。当你将开关翻到开启位置时，电路闭合，灯亮起。这个基本原理应用于各种应用，从家庭照明到复杂的工业机械。normally opened配置在许多场景中是有利的。它提供了一种故障安全机制；如果发生电源故障或故障，开关将默认处于打开状态，确保设备不会意外开启并造成潜在的危险。这一特性在安全关键系统中尤其重要，在这些系统中，意外激活可能导致危险情况。此外，normally opened开关通常用于报警系统。在这些系统中，开关保持打开状态，直到发生事件，例如门被打开或窗户被打破。当事件发生时，开关闭合，触发警报。这种功能使得normally opened开关非常适合安全应用，因为它们仅在特定条件下激活，从而最小化误报。相反，还有normally closed（常闭）开关，这些开关在正常条件下保持闭合，并在激活时打开。每种配置都服务于不同的目的，理解normally opened和normally closed之间的区别对于设计有效的电气系统至关重要。例如，normally closed开关可能用于紧急停止电路，其中设备应保持运行，直到触发安全条件。在设计包含normally opened组件的电路或系统时，工程师必须仔细考虑这些开关将使用的上下文。电压、电流额定值和环境条件等因素都会影响开关的性能和可靠性。此外，为给定应用选择正确类型的开关至关重要；在需要normally closed开关的情况下使用normally opened开关可能会导致系统故障或安全隐患。总之，术语normally opened指的是在标准条件下打开的开关或电路，不允许电流流动。这种配置广泛应用于各种应用，从家用电器到工业系统，因其安全特性和可靠性而受到青睐。理解normally opened开关的操作和应用对任何从事电子领域的人至关重要，因为它在电气系统的设计和功能中发挥着重要作用。随着技术的不断发展，掌握像normally opened这样的概念的重要性只会增加，为自动化和控制系统的创新解决方案铺平道路。