TRANSISTOR TYPE CODE FLASHER

100

02:14:33

In this experiment we will switch LEDs using a transistor , this experiment will give you an understanding of the operation of a transistor bias is applied to the base of the transistor.
Since the transistor is in conducting state, current flows in the collector of the transistor, LED emits light.
This circuit is called transistor switching circuit.

published 11 years ago

najib153

11 years ago

Transistor switching circuit

Sine_eyed

11 years ago

No my friend, this circuit will not give anyone a better understanding of transistor biasing. With the switch in place as it is, there's really no need for the transistor at all, because severing the base from the supply effectively "unplugs" the whole thing. It's a break in the circuit. Try a potentiometer instead of that switch..

rbrtkurtz

11 years ago

Forget the switch. This is not a good example of transistor biasing because there is MORE current through the base than there is through the collector. That's the opposite of how it should work, and defeats the point of a transistor. The whole purpose of a transistor is that a small current applied at the base will allow a large current through the collector.

Sine_eyed

11 years ago

Yes, @rk that is true- and there are certainly better ways to study biasing than turning off and on an LED. Believe it or not I was trying to help out, and I've found that some folks are more receptive to constructive criticism if you don't start by verbally demolishing their circuit. There's always time for that, but let's get a first response before we go there.. ;^)

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