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  1. P

    Why does a transistor heat when base current is high

    Hi alivol,               I tried to use transistor as a switch,also i dont know how to make a schematic picture.i just experimented with transistor,resistor and a relay. Hi indulis,               You are currect,emitter current is high which is essential to switch on the relay,i want to know...
  2. P

    Why does a transistor heat when base current is high

    i tried many transistors like sl 100,bc 548 etc in these the base is connected to voltage source through a high value resistor (some 1 kilo ohm) when i tried to decrease the value of resistor,output current to load decreased and transistor temperature increased.why transistor temperature...
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    Why does a transistor heat when base current is high

    Why does a transistor heat when base current is high
  4. P

    Purpose of NPN transistor

    Sorry physics sir,i am only a student also do not know much about transistor theory.But in practical use of transistor no one thinks of theory.I just used the term 'jump' just to explain its working for practical circuit designing,a simple example is switching a relay 'on' using npn transistor...
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    Purpose of NPN transistor

    A NPN transistor works on the basis of semiconductor theory ie current given to the emitter (N Region) is the sum of base current (P Region)+collector current(N Region).in power mode use of NPN transistor when the base gets +ve voltage(low current) -ve voltage from emitter jumps to collector.In...
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    Which electronics engineering degree branch best

    Hi everyone,can anyone guide me in choosing a best btech(engineering) branch.In our location mainly four branches are there 1) Electronics & Communication 2) Applied Electronics & Instrumentation 3) Electronics & Instrumentation 4) Electrical & Electronics.My favourite hobby from...
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