You might think that a symptom on your tongueâsuch as an unusual color or textureâis no big deal, but what happens in your mouth can often be a helpful glimpse into your overall health. Sometimes symptoms that show up on your tongue can signal other health conditions, such as diabetes, vitamin deficiencies, and even scarlet fever.
Types of transistor. There are two types of standard (bipolar junction) transistors, NPN and PNP, with different circuit symbols. The letters refer to the layers of semiconductor material used to make the transistor. Most transistors used today are NPN because this is the easiest type to make from silicon.here are two types of standard (bipolar junction) transistors, NPN and PNP, with different circuit symbols. The letters refer to the layers of semiconductor material used to make the transistor. Most transistors used today are NPN because this is the easiest type to make from silicon.
A transistor is a three-terminal electronic component composed of semiconducting material such as silicon or germanium.   the purpose of a transistor is to use a small sign â¦ al to vary the conductivity of a piece of semiconductor.The tiny signal can switch a large current on and off. Or, the signal can be used to control a larger signal, so the transistor becomes an amplifier.ecause in this device the resistsnce between two terminale respectively collector and emitter is changed by changing the base voltage that is it transfers the resistance betw â¦ een emitter and collector therefore it is called as TRANSISTOR.(TRANSFER OF RESISTOR) Not exactly. Name.