### device | electrical device:

Transducer
* All transducers are magnetic ally shielded
  - magneticaly shielded
* Many transducers can convert ultrasonic waves into electric waves.
* Some transducers are ratiometric and require a regulated excitation.
* State the types of ultrasound transducers used in biomedical instrumentation systems.
* are Type-converters
  - another important class of electronic devices
  - devices which convert mechanical measurements into electrical signals
  - electrical devices
  - electronic components
  - individual, hand made items
* can also play an important role in manufacturing processes themselves
  - consist of piezoelectric material, electrodes and matching layers
  - fail due to excessive mechanical stress or excessive thermal stress
* change some measureable parameter, like energy or force, into some other parameter.
* convert pressure waves to electrical signals and vice versa.
* devices for measuring physical parameters such as motion, force, torque.
  - commonly a diaphragm and strain gauges
* never lie.
* only measure depth.
* provide compact representation of morphological data.
* vary in center frequency, diameter, and damping.

### device | electrical device | transducer:

Pressure transducer
* Pressure Transducers provide analog output signal.
* are also visible on some of the stakes going into the water.
* measure the pressure exerted by a column of liquid.
* measure water levels in the dewatering wells
  - pumping wells
* produce a voltage proportional to pressure.
* track changes in hive weight.

### device | electrical device:

Transformer
* Most transformers consist of two coils of insulated wire
  - have a switch that turns the light on at a preset time
  - use timers to turn the lights on and off
* allow generated power to be either increased or decreased before it is used.
* also emit radiation whenever an appliance is plugged in
  - tend to create odd harmonics when overdriven
* are a crucial link in the electric power distribution system
  - action figures
  - devices which 'transform' or convert one voltage into another
  - electrical devices
  - products
  - the critical elements that step up and down the voltages at each end of the line
  - used in every power grid around the world
* can transform into different things like cars , planes , guns , and animals.
* consist of a core with two different strands of wire wrapped around it.
* is an electrical device
* operate by the principle of mutual inductance.
* produce a sine wave output that is identical to normal household electricity.
* serve to transform a force and a velocity into another force and another velocity.
+ Inductor, How inductors are used
  * Inductors are used often in analog circuits. Two or more inductors that have coupled magnetic flux make a transformer. Transformers are used in every power grid around the world. Inductors are also used in electrical transmission systems, where they are used to lower the amount of voltage an electrical device gives off or lower the fault current.
+ Transformers (fiction): Fictional characters :: Toys
  * In the story, they come from a planet called Cybertron. There are two main types of Transformers. These are the Autobots, the good guys, and the Decepticons, the bad guys. The leader of the Autobots is named Optimus Prime, and the leader of the Decepticons is named Megatron. Transformers can transform into different things like cars, planes, guns, and animals. Transformers were first made in 1984. There have been many different Transformers toys and stories since then
  - (toy line): Animated television series :: Toys
  * Transformers is about different things sometimes. Usually it is about the heroic Autobots fighting the evil Decepticons. The Autobots are usually led by Optimus Prime. The Decepticons are led by Megatron