The main power switch used for TVs and stereos and the push-button power switch for flashlights are familiar use examples of switches of this alternate operation type. (A toggle switch described later in Figure 3 is used for this application.) For your information, the former type is sometimes referred to as the push-ON and push-OFF type. Switches of the alternate operation type include a type of switch that returns to the previous state by being pressed again and a type of switch that returns to the previous state when its lever is returned to the opposite direction. It is indicated as "Alternate type" in English, where "Alternate" means "by turns." This operation method is referred to as the self holding type. A switch of this type turns ON when its button is pressed once, and maintains its ON state even after the button is released. Next, the alternate operation method is illustrated in Figure 2. Such momentary type switches are used for other applications, including buzzers for disembarking from a bus, wherein such switches are used to construct buzzer buttons that only require one push for a one-time operation. A momentary switch is used for the machine's button to move and position the crane.
It is indicated as "Momentary type" in English, where "Momentary" means lasting for a moment.Īs a use example of this momentary operation type switch that may be familiar to you and easy to understand, let's examine the crane game machines used in amusement facilities. Now, the following descriptions explain each operation method.įirst, let's explain the momentary operation.Īs shown in Figure 1, the momentary operation method keeps the ON state of a switch only when its button is pressed and held, and the switch returns to its OFF state when the button is released, which is also referred to as a self-reset type. There are two types of operation methods for operation switches (a push type switch is described this time), namely, momentary and alternate methods. What are the differences between them?Īnswer: The method that keeps the ON state of a switch only when its button is pressed and held is referred to as the "momentary" method, while the method that keeps the ON state of a switch even after the button is pressed and then released is referred to as the "alternate" method. Question: There are descriptions of momentary and alternate operation methods in switch catalogs.
Please get familiar with the differences between the operation methods of these two types of switches and refer to the acquired knowledge when selecting a switching element that meets your needs. There is no point unless a switch operation method suitable for your purpose is adopted when controlling circuits. This article describes the differences between the operation methods of these two types of switches, based on the following question by a customer.
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