Wk 7 Lesson - Switches

Switch Devices

1

Whether it’s opened or closed, a switch’s main purpose is to
allow a path to connect to another path.
If one side of the switch is connected to path to positive
terminal of the powersource, the other side will supply
power to a path routed to a load device, a computer
terminal, or even another switch if designed.
Regardless, the switch is used to control or used to report.

Purpose of a Switch

●Latch Switches

●Momentary Switches

●Push Switch

●Rocker Switch

●Toggle Switch

●Slide Switch

●Normally Open Switch

●Normally Closed Switch

●SPST - Single Pole Single Throw Switch

●SPDT - Single Pole Double Throw Switch

●DPST - Double Pole Single Throw Switch

●DPDT - Double Pole Double Throw Switch

●Multi-Throw - Multi Throw Switch

●Switch's Common

Momentary vs Latch Switches

Normally Open (N.O.) vs Normally Closed (N.C.)

SPST, SPDT, DPST, DPDT, Multi-Throw

Testing Switches

Wiring up each Switch

Identifying the Switch visual vs Researching

Mechanical Switch vs Electrical Switches

Types of Switches: Rocker, Toggle, Push, Slide, Rotary

Latch vs

Momentary

Switches

Latch Switch:

This switch holds it’s state whether
on or off until the new commands
initiated this switch

Momentary Switch:

This switch holds the state only
when pressed

Types of
Switches

Push Switch

Rocker Switch

Toggle Switch

Rotary Switch

Slide Switch

Types of Control Devices

SPST - Single Pole, Single Throw Normally Open (NO)

SPDT - Single Pole Double Throw

●Has 1 input(Com) and 1 Output

DPST - Double Pole Single Throw

Multi-Throw -

DPST - Double Pole Double Throw

NC - Normally Closed (NC)

9

Simple Circuits Quiz

Test Your Knowledge

Answer Bank

●Power

●Ground

●Control

●Load

●Direct

●input

●switch

●Loads are energized by supplying it with 1. _____ or 2. ______.

●In a circuit, the 3. _______ device supplies and the 4. ____ device is controlled.

●A control device supplies (+) or (-) to a 5. ____ device

●Switches can supply another component with 6._____ or 7.______.

●If a switch supplies (+) or a (-) to a load, it’s known as a 8.______ control device.

●If a switch supplies (+) or a (-) to a computer, it’s known as an 9._____ device.

●If a constant (+) is connect to the load device, the other side is connected to a
10._______ device.

●If a load is connected to a constant (-), the other side is connected to a controlled
11._____.

●If a constant (+) is connect to the load device, the circuit is 12.______ controlled.

●If a load is connected to a constant (-), the load is 13._____ controlled.

●If a computer supplies (+) or a (-) to a load device, the computer is considered the
14_______ device and the 15_____ is an input device supplying a signal to the
computer.

Match

Match the following

Rocker

Toggle Switch

Slide Switch

Push Switch

Rotary Switch

• Rocker

• Toggle Switch

• Slide Switch

• Push Switch

• Rotary Switch

Multiple Choice

Oliver and Rohan are working on a science project. They need a switch that activates when they apply pressure and returns to its original state when the pressure is released. Which type of switch should they use?

• Latch Switches

• Momentary Switches

• Push Switch

• Rocker Switch

Drag and Drop

Loads are energized by supplying it with  1. ​

Placeholder

or  2. ​

Placeholder

​ .

In a circuit, the 3. ​

Placeholder

device supplies and the 4. ​

Placeholder

device is controlled. 

A control device supplies (+) or (-) to a 5. ​

Placeholder

device

Drag these tiles and drop them in the correct blank above

power

ground

control

load

Multiple Choice

What type of switch is this circuit symbol?

• SPST

• SPDT

• DPST

• DPDT

• PTM

Multiple Choice

Describe the circuit

• Normally Open (N/O)

• Normally Closed (N/C)

Multiple Choice

Describe the circuit

• Power Control

• Ground Control

Multiple Choice

With both circuits in it's normally open (N/O) position, Tech A says the circuit on the left should measure a Volt Drop of 12V at the switch. Tech B says the bulb on the right should have a Volt Drop that equals Source Voltage.

Who is correct?

• Tech A

• Tech B

• Both

• Neither

Multiple Choice

Which one of these are NOT basic component of simple circuit?

• Light bulb

• Wire

• Battery

• Radio

• Control Device

Multiple Choice

What type of switch is this circuit symbol?

• SPMT

• SPDT

• DPST

• DPDT

• PTM

Simple Circuits Quiz

Test Your Knowledge

Answer Bank .

●Power

●Ground

●Control

●Load

●Direct

●input

●switch

●Loads are energized by supplying it with 1. power or 2. ground..

●In a circuit, the 3. control device supplies and the 4. load device is controlled.

●A control device supplies (+) or (-) to a 5. load device

●Switches can supply another component with 6.power or 7.ground.

●If a switch supplies (+) or a (-) to a load, it’s known as a 8.direct control device.

●If a switch supplies (+) or a (-) to a computer, it’s known as an 9.input device.

●If a constant (+) is connect to the load device, the other side is connected to a 10.control
device.

●If a load is connected to a constant (-), the other side is connected to a controlled
11.power.

●If a constant (+) is connect to the load device, the circuit is 12.ground controlled.

●If a load is connected to a constant (-), the load is 13.power controlled.

●If a computer supplies (+) or a (-) to a load device, the computer is considered the
14. control device and the 15. switch is an input device supplying a signal to the
computer.

Multiple Choice

What type of switch is this?

• Toggle Switch

• Slide Switch

• Rocker Switch

• Push Switch

Multi Throw

Multiple Choice

Which type of switch has only two positions: on and off?

• Toggle Switch

• Slide Switch

• Push Switch

• Rocker Switch

Switches can be operated by the driver,
pressure, or temperature.

Multiple Choice

Which type of switch has a lever that slides from one position to another?

• Toggle Switch

• Slide Switch

• Push Switch

• Rocker Switch

Multiple Choice

Which type of switch is normally open and closes when activated?

• Normally Open Switch

• Normally Closed Switch

• Push Switch

• Rocker Switch

Multiple Choice

Which type of switch is normally closed and opens when activated?

• Normally Open Switch

• Normally Closed Switch

• Push Switch

• Rocker Switch

Multiple Choice

Which type of switch has a single pole and single throw?

• SPST - Single Pole Single Throw Switch

• SPDT - Single Pole Double Throw Switch

• DPST - Double Pole Single Throw Switch

• DPDT - Double Pole Double Throw Switch

Multiple Choice

Which type of switch has a single pole and double throw?

• SPST - Single Pole Single Throw Switch

• SPDT - Single Pole Double Throw Switch

• DPST - Double Pole Single Throw Switch

• DPDT - Double Pole Double Throw Switch

Multiple Choice

Which type of switch has a double pole and single throw?

• SPST - Single Pole Single Throw Switch

• SPDT - Single Pole Double Throw Switch

• DPST - Double Pole Single Throw Switch

• DPDT - Double Pole Double Throw Switch

Multiple Choice

Which type of switch has a double pole and double throw?

• SPST - Single Pole Single Throw Switch

• SPDT - Single Pole Double Throw Switch

• DPST - Double Pole Single Throw Switch

• DPDT - Double Pole Double Throw Switch

Multiple Choice

Which type of switch has multiple positions or throws?

• Multi-Throw - Multi Throw Switch

• Toggle Switch

• Slide Switch

• Push Switch

Multiple Choice

Which term refers to the common terminal of a switch?

• Latch Switches

• Momentary Switches

• Push Switch

• Switch's Common

Multiple Choice

Which type of switch is activated by applying pressure and stays in the activated state until the pressure is released?

• Latch Switches

• Momentary Switches

• Push Switch

• Rocker Switch

Multiple Choice

Which type of switch is activated by pressing it down and returns to its original state when released?

• Latch Switches

• Momentary Switches

• Push Switch

• Rocker Switch

Multiple Choice

Which type of switch is activated by applying pressure and stays in the activated state even after the pressure is released?

• Latch Switches

• Momentary Switches

• Push Switch

• Rocker Switch

Multiple Choice

What is the purpose of a switch in an electrical circuit?

• To control the flow of current

• To generate electricity

• To store electrical energy

• To measure electrical resistance

Multiple Choice

Which type of switch is commonly used in household lighting?

• Toggle Switch

• Slide Switch

• Push Switch

• Rocker Switch

Multiple Choice

Which type of switch is this?

• Toggle Switch

• Slide Switch

• Push Switch

• Rocker Switch

Multiple Choice

Which type of switch is commonly used in computer keyboards?

• Toggle Switch

• Slide Switch

• Push Switch

• Rocker Switch

Match

Match the following

Rocker

Toggle Switch

Slide Switch

Push Switch

Rotary Switch

• Rocker

• Toggle Switch

• Slide Switch

• Push Switch

• Rotary Switch