24878-05S

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Rotary switches are ubiquitous in many industrial and consumer applications, ranging from simple two-pole single-throw switches to sophisticated multi-pole multi-throw switches. They allow the user to select between different input signals and provide various electrical and electronic characteristics. One of the more popular formats is the 24878-05S, which is primarily used in audio, video, and telecommunications applications. In this article, we will look at the 24878-05S application field and working principle.

The 24878-05S is a three-pole four-throw rotary switch. It features several different features including a standard 1/4" diameter hole for mounting, a spring-loaded detent plunger for positive engagement, and a dielectric recessed actuator. The contacts are gold-plated to provide maximum conductivity and corrosion resistance. The switch is designed for continuous switching and is UL and CSA recognized for safety.

The 24878-05S is commonly used in audio/video (A/V) switching applications, allowing users to select one of several inputs from a single output. For example, it can be used to switch between two test sources such as an oscilloscope and a frequency counter. This type of switch enables efficient, accurate control of complex systems such as radio and television receivers, cellular telephones, and industrial test equipment.

The working principle of the 24878-05S is simple and efficient. When the user rotates the switch shaft, it causes the actuator to move along a circular track. As the actuator moves, it moves the contact bridges, which connect two contacts on each throw of the switch. This connection allows current to travel between the source and the target component.

The contact bridges are composed of a precision-molded polyamide that is resistant to vibration and shock, making the switch suitable for environments such as automobiles and other vehicular applications. The gold-plated contacts ensure good conductivity and long-lasting durability. Additionally, the detent plunger provides a tactile response when the switch is in the “on” position, giving the user a positive feedback.

In summary, the 24878-05S is a three-pole four-throw rotary switch ideal for audio/video switching applications. Its gold-plated contacts and molded polyamide construction provide excellent conductivity, shock and vibration resistance, and durability. Its spring-loaded detent plunger ensures a positive engagement and its dielectric actuator allows for continuous switching. All of these features make the 24878-05S an excellent choice for a variety of industrial, commercial, and consumer applications.

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