generators and microphones
- Created by: lukey2804
- Created on: 14-10-20 19:43
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- generators and microphones
- alternators
- create an alternating current
- generators rotate a coil in a magnetic field
- as the coils spins a current is induced
- current changes direction every half turn
- as the coils spins a current is induced
- constructed like a motor
- have slip ring
- dynamos
- create a direct current
- work like alternators but have a split ring
- this causes the connection every half turn
- causes the current to keep flowing in the same direction
- this causes the connection every half turn
- oscilloscopes
- show the generated pd
- microphones
- generate current from sound waves
- loud speakers in reverse
- sound waves hit diaphragm
- the diaphragm is attached to a wire coil wrapped around a magnet
- causes the coil to move in the magnetic field creating a current
- the diaphragm is attached to a wire coil wrapped around a magnet
- alternators
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