A Linear Variable Differential Transformer, or LVDT for short, is an electromechanical position transducer (sensor) which provides accurate and frictionless positional feedback information about the linear mechanical position
As we saw in the previous input interfacing tutorial, an interface circuit allows one type of circuit to be connected to another type of circuit that
The Thermistor is a solid state temperature sensing device which acts a bit like an electrical resistor but is temperature sensitive. Thermistors can be used to produce
Interfacing is the method of connecting or linking together one device, especially a computer or micro-controller with another allowing us to design or adapt the output
Electrical DC Motors are continuous actuators that convert electrical energy into mechanical energy. The DC motor achieves this by producing a continuous angular rotation that can
Sound is the generalised name given to “acoustic waves”. These acoustic waves have frequencies ranging from just 1Hz up to many tens of thousands of
We have seen in this section on Input/Output Devices that transducers are devices which convert one form of energy into another. For example, microphones convert sound waves
The linear solenoid works on the same basic principal as the electromechanical relay seen in the previous tutorial and just like relays, they can also be switched
These types of temperature sensor vary from simple ON/OFF thermostatic devices which control a domestic hot water heating system to highly sensitive semiconductor types that
Thus far we have seen a selection of Input devices that can be used to detect or “sense” a variety of physical variables and signals and are
As their name implies, Position Sensors detect the position of something which means that they are referenced either to or from some fixed point or position. These
A Light Sensor generates an output signal indicating the intensity of light by measuring the radiant energy that exists in a very narrow range of frequencies basically
