COIL or INDUCTOR mistakes
It can be dangerous if the mistake is not clarified. It is common to a lot of people to understand the behaviour of inductor or simply call it the coil. Coil is used everywhere such as a wire, magnetizing a screw driver, antenna, car starter etc. There are so many useful applications and a good … Read more
Cut-off and Saturation of BJT
Students seem sometimes not quite understanding what is the condition of BJT cut-off and BJT saturation. These are the two basic modes of operation of transistors and is used widely as ON and OFF or HIGH and LOW in digital circuits. Here is the basic diagram of a transistor circuit: Depending on the driving input VBB. … Read more
Short circuit, bypassing, parallel with a short..
Kind of surprising that students do not know what happened when a resistor is in parallel with a short or short circuit. This situation is called bypassed. This will be what happens to a current flowing into a resistor in parallel with a short (a resistance of 0 ohm): The parallel resistance of a resistor … Read more
