A transistor has three legs. A small amount of current/voltage on the "Base" (Gate) controls a large amount of current flowing between the "Collector" and "Emitter" (Drain and Source).
An inductor is simply a coil of wire. When current flows, it creates a magnetic field around the coil. When the current tries to stop, that magnetic field collapses and pushes the current to keep going . electrical components and their functions
At the heart of every electronic device lies a simple truth: Our job as engineers and makers is to tell it how . We do this using the seven fundamental electrical components. A transistor has three legs
When you apply voltage, the resistor limits the current. The capacitor fills up slowly. The time it takes to charge is not random; it is precise: [ T = R \times C ] When current flows, it creates a magnetic field
Power supplies (DC-DC converters), radio tuners, and the hum you hear from old transformers. 4. The Diode (The One-Way Valve) Function: To allow current to flow in only one direction.
Ohm’s Law is the only equation you truly need to memorize. [ V = I \times R ] If you know two of these values, you can calculate the third. A 330Ω resistor with a 5V supply will pass roughly 15mA of current. 2. The Capacitor (The Reservoir) Function: To store electrical energy in an electric field . Unit: Farad (F) – usually microfarads (µF) or picofarads (pF).
Every time you flip a light switch, boot up a computer, or crank the volume on a guitar amp, you are witnessing a silent symphony. Millions, sometimes billions, of tiny actors perform a perfectly choreographed dance. But this dance isn't about light or sound—it is about control .