Electronic component-Passive components-
circuit board pcb
Components incapable of controlling current by means of another electrical signal are called passive devices. Resistors, capacitors, inductors, and transformers are all considered passive devices.
Pass current in proportion to voltage (Ohm's law) and oppose current.
Resistor – fixed value
Power resistor – larger to safely dissipate heat generated
SIP or DIP resistor network – array of resistors in one package
Rheostat – two-terminal variable resistor (often for high power)
Potentiometer – three-terminal variable resistor (variable voltage divider)
Trim pot – Small potentiometer, usually for internal adjustments
Thermistor – thermally sensitive resistor whose prime function is to exhibit a large, predictable and precise change in electrical resistance when subjected to a corresponding change in body temperature.
Humistor – humidity-varied resistor
Varistor, Voltage Dependent Resistor, MOV – Passes current when excessive voltage is present
Resistance wire, Nichrome wire – wire of high-resistance material, often used as a heating element
Heater – heating element