Radio Frequency Circuits for Tunable Multi-Band CMOS Receivers ...
Week 3 Electrical Circuits and Components. It’s a Radio!
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Transcript of Week 3 Electrical Circuits and Components. It’s a Radio!
Current that flows in only 1 direction all the time is called direct current (DC)
Batteries and solar cells produce direct current
Currently that regularly reverses direction is alternating current.
generatorPower company (Utility)
Any break in the circuit will prevent the flow of electricity throughout the whole circuit. (open circuit)
There are two basic types of pathways that can be set up for electric current to flow.
A series circuit is connected so that there is only 1 pathway through which current can flow
A parallel circuit is connectedto provide each component with its own pathway.
A capacitor is made from two conducting surfaces separated by an insulating material, calledthe dielectric.
The property of storing electric energy is called capacitance
Capacitance is measured in farads.
The purpose of the capacitor is to smooth out voltage changes.
See videos about capacitors
The property of storing magnetic energy is called inductance
Inductance is measured in henries.
The purpose of the inductor is to smooth out current changes.
Resistors have a certain specified resistance measured in ohms ()
Some resistors are variable, meaning theResistance can be changed. This type of resistor is called a potentiometer, and is the type of component used as a volume control.
Diodes allow current to flow in only 1 direction, meaning it can turn an ac current into a dc current by stopping the flow in the wrong direction.
LED=Light Emitting Diode
Transistors use voltage or current signals to control current flow.
Transistors can be used as either an electronic switch or an amplifier.
Gain is the term used that describes a transistor’s ability to amplify an signal.
What type of electrical component consists of two or more conductive surfaces separated by an insulator?
capacitor
Some components are used to prevent equipment damage or safety hazards such as fire or electrical shock due to equipment malfunction