The transistor is the fundamental building block of modern electronic devices, it is a semiconductor device used to amplify and switch electronic signals.
More simply a transistor is a valve for electricity. In this video I demonstrate the two types of transistors (NPN and PNP) and explain their uses.
Here are the two symbols [...]
A Breadboard is a must for the electronics experimenter type of person for experimenting activities. It is made up of rows of pins that you can simply press in components and wires and they will be held in by pressure.
A potentiometer is a variable resistor used to resist electrical current.
Think of a potentiometer as a water valve, only for electricity, most of the same principals exist. For instance if you crack a valve open and get the desired flow, and the water pressure increases or the valve gets [...]
Photocells, (LDR) Light Dependent Resistor, Photo Resistor, Cadium Sulfide Cell (CdS), all of these names refer to the same thing. Photo Cells are semiconductors that are also resistors that change their resistance depending on the amount of light.
I decided it would be easier to explain AC and DC current if the user already knew how to use and oscilloscope. Explaining how to use an oscilloscope is easy if the user already knows what DC and AC current is. I think the video worked out as a fast paced tutorial for both subjects.
A diode is a semiconductor that only allows current to flow in one direction, it is a one way valve for electricity.
Diodes come in all shapes and sizes, the most important difference in them is the current rating, i.e. how much you can push through without overheating and burning the diode up. Here [...]
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