Electrical Parts, Controls, & Devices Part 2
Transducer | Thermostat | Thermistor | Light Dependent Resistor | Motor Coil Solenoid | Buzzer | Fuse | Resistor | Heater | Lamp | Rheostat Potentiometer | Timer | Transformer | Diode | Capacitor | Ground | Switches
Buzzer:
A buzzer or signal is a transducer , which converts electrical energy to sound.
Fuse:
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A fuse is a safety device that uses a protected internal wire, which will "blow" or melt if the current flowing through it exceeds a specified level. Some fuses are designed to "open" at a particular temperature to protect against fire or temperature related malfunctions. In this way an appliance fuse can protect the user or the appliance from damage that could be caused by a short circuit or temperature malfunction.
Resistor:
A resistor restricts the flow of current through a circuit .
Heater:
A heater is a resistor transducer, which converts electrical energy to heat.
Lamp:
A lamp is a resistor- transducer, which converts electrical energy to light.
Rheostat:
Rheostats are variable resistors have 2 contacts and are usually used to control current . Rheostats can be used to regulate electric range surface burners, among other applications. (The third teminal in this rheostat picture is a grounding terminal.)
Potentiometer:
Potentiometers are variable resistors have 3 contacts and are usually used to control voltage or current.
Timer:
Timers are used in most appliances to control the timing of a particular action. A timer can be motor operated or a solid-state control board. As the timer advances, one ore more switches are opened or closed to energizing or breaking electrical contact to a particular part at the correct time.