Differentiation Chart (Good for PPT): Use a 2-column comparison of a "Normal Diode" vs. an "LED."
Image of a axial-lead ceramic resistor alongside its official schematic symbol (a zig-zag line or a blank rectangle).
Capacitors temporarily store electrical energy in an electric field. They act like tiny, fast-charging batteries.
Color-coded bands on the body indicate resistance value. introduction to basic electronic components ppt
Bipolar Junction Transistors (BJT) and Field-Effect Transistors (FET).
A diode is the simplest semiconductor device. It acts like a one-way check valve for current: it allows current to flow easily in one direction (forward bias) and blocks it in the opposite direction (reverse bias). This property is used to convert Alternating Current (AC) from your wall outlet into Direct Current (DC) that your phone uses—a process called rectification. Diodes also protect circuits from reverse polarity damage. The most common type is the silicon diode, which requires about 0.7V to turn on. The LED (Light Emitting Diode) is a special type that emits light when current flows through it.
Filtering noise, smoothing power supplies, timing circuits. Differentiation Chart (Good for PPT): Use a 2-column
Limits the flow of electrical current and drops voltage. Unit: Ohms ( Ωcap omega
A photo of standard axial-lead resistors showing the colored bands.
Internal metal strips connect rows of holes together. Explain the power rails (long rows on the sides for power and ground) and the component terminal strips (short rows in the middle). They act like tiny, fast-charging batteries
A clear split-screen image showing a simple LED circuit built on a breadboard on the left, and a digital multimeter checking a battery voltage on the right.
A high-resolution image of a printed circuit board (PCB) with clearly visible resistors, capacitors, and microchips.
A diode that emits light when current passes through it. LEDs are highly efficient and used in displays, lighting, and indicators.
Diodes act like a check valve in plumbing. If you plug a battery in backward, a diode can block the current to protect your device from damage. Slide 9: The Transistor (Active)