Type Of Switches

• Robots have a switch that is important in allowing and stopping them from working
• The switch in robots connects and breaks the flow of electricity
• Electronic switches are used to perform all logical functions
• A switch is an electrical device having two states: on or off (open or close)
• A switch has zero impedance when closed and infinite impedance when open
• Target Outcomes


  1. Identify the different types of switches

  2. Explain the use of a switch in a circuit

  3. Draw a schematic diagram of a circuit with a switch
• Push Button/Tact Switch reacts to user interaction with the button or switch when it makes contact with the control panel beneath
• A Single Pole Single Throw Switch (SPST) is a basic ON and OFF switch consisting of one input contact and one output contact
• A Single Pole Double Throw Switch (SPDT) is a switch that has three terminals: one input contact and the remaining two are output contacts
• A Double Pole Double Throw Switch (DPDT) is a dual ON/OFF switch consisting of two ON positions with six terminals: two input contacts and four output contacts
• Toggle Switch is manually actuated by a mechanical handle, lever, or rocking mechanism and commonly used as light control switches
• Toggle switch is used as a light control switch
• SPST is a basic ON and OFF switch consisting of one input contact and one output contact
• Toggle switch


  • Used as a light control switch
• SPST switch

  • Basic ON and OFF switch with one input contact and one output contact