Switches Flashcards
(30 cards)
What is the function of a switch in an electronic circuit?
To open or close a circuit, controlling the flow of electrical current.
How does a mechanical switch work?
It uses physical movement to make or break an electrical connection.
What are the different types of mechanical switches?
Toggle, rocker, slide, and rotary switches.
What is a toggle switch?
A switch that flips between on and off positions with a lever or handle.
How does a rocker switch operate?
By rocking a button back and forth to make or break the connection.
What is a slide switch?
A switch that moves a slider back and forth to open or close the circuit.
What is a rotary switch?
A switch that rotates to select different positions or settings.
What are the key characteristics to consider when choosing a switch?
Voltage and current ratings, mechanical lifespan, and switch type.
How do you properly install a switch in a circuit?
Ensure it is mounted securely and connected according to the circuit’s design.
What is the difference between a single-pole single-throw (SPST) and a double-pole double-throw (DPDT) switch?
SPST switches control a single circuit with one on/off position, while DPDT switches control two circuits with two on/off positions.
What is a momentary switch?
A switch that only remains in its active state while being pressed and returns to its default state when released.
What are the common materials used for switch contacts?
Silver, gold, and copper alloys for their conductive properties and durability.
How does a switch’s contact rating affect its performance?
Higher ratings ensure the switch can handle greater currents and voltages without degradation.
What is a switch’s contact bounce and how can it be mitigated?
Contact bounce is the rapid on/off switching that occurs when contacts make and break. It can be mitigated with debouncing circuits.
What is a sealed switch and why is it used?
A switch with a protective seal to prevent dust, moisture, or other contaminants from affecting its operation.
How do you test a switch for proper operation?
Use a multimeter to check continuity when the switch is in the on position.
What is the role of a switch in power management?
To control the flow of power to different parts of a circuit or device.
What factors can affect the lifespan of a switch?
Mechanical wear, environmental conditions, and electrical load.
How do you prevent switch failure in high-current applications?
Use switches rated for the specific current and voltage levels of the application.
What is a rotary encoder switch?
A switch that provides rotational input and can output multiple values depending on the rotation.
How does a switch’s form factor impact its use?
The form factor determines the switch’s physical size and shape, affecting how it fits into a design.
What is an illuminated switch?
A switch with a built-in light source to indicate its status.
How do you select a switch for a specific application?
Consider the switch’s type, rating, and environmental conditions of the application.
What is a dip switch?
A small switch used to configure settings on a circuit board by toggling individual switches.
