Even More Logical-P6

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  • Created by: Shannon
  • Created on: 30-05-13 09:20
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  • Even More Logical
    • Switches, LDRs and thermistors are used in a potential divider circuit to make the input high
    • When a current passes through the coil, and iron armature is attracted
      • The armature pivots and pushes an insulating bar against the central contact
        • The central contact moves, opening the normally closed contacts
    • Current output from logic gates are low, but can be passed through a relay to switch on a larger current
    • When the switch is open, the input is low
    • A threshold level can be set if a variable resistor is used as opposed to a fixed one
    • The relay isolates the logic circuit from the high current to avoid damage to the logic gates


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