Electromagnet in practice - lock and relay

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Relay is an electrical component that contains electromagnetically operated switch. It was invented in 1835 by Joseph Henry.

Educational phase: motivation

 

Required aids+

  • two different relays
  • door lock
  • battery
  • switch
  • connecting wires

 

Experiment instructions+

E130_S001 Connect the door lock switch over to battery.
E130_S002 Closing the switch unlocks.
E130_S003 Detail of a locked lock - open.
E130_S004 Detail unlocked lock - closed.
E130_S005 Connect the relay switches over to battery. Switching relay switches.
E130_S006 Detail of open relays.
E130_S007 Detail of closed relay.
E130_S008 Connect the other relay switch over to battery. Switching relay switches.
E130_S009 Detail from the perspective of open relay contacts.
E130_S010 Detail from the perspective of closed relay contacts.
E130_S011 Detail from the perspective of open relay anchor.
E130_S012 Detail view of the switched relay anchor.
 

Experiment video+

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Physical interpretation+

The electromagnetic relay consists of a control circuit with the coil circuit and controlled. With the control circuit can be switched or circuit interrupt driven. Coil and armature core are magnetically soft steel. Closes the control circuit, a current begins to coil, it becomes a magnet and attract anchor. End anchor themselves to the flexible tongues pressed switch circuit controlled and managed through the circuit starts to flow. The current control circuit in just a little while in a controlled current circuit can be considerable.

Relay is an electrical component that contains electromagnetically operated switch. It was invented in 1835 by Joseph Henry.
 

Application in practice+

important part of safety equipment for railways, operating heavy equipment - motors, etc.
 
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This experiment has been added 14.4.2012 by Jan Krejčí and since then have 9597 visits.
 
3.6.2014 21:44 © Krejčí Jan
 
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