#2N3906 TRANSISTOR HOW TO#
So now that we've gone over the basics of PNP transistors, we can now go over how to connect a PNP transistor in a circuit to provide switching and/or Transistor, the more base current there is, the more the flow of current is impeded until all current completely stops if the base current reachesĪ high enough level.
So with an NPN transistor, the more base current there is, the more this increases the flow of the amplified current. When the base current is increased,Ĭurrent there is that flows from the emitter to collector, until the current is increased to the point whereĬurrent flow ceases from emitter to collector. In this condition, the PNP transistor will conduct current across from the emitter to the collector, as longĪs the voltage that the emitter is receiving is more positive than the base. Instead current is sinked from the base of the PNP transistor, meaning current flows out of the base and is sinked to ground. A PNP transistor is fully functional when there is no currentįlowing to the base. The more this base current is amplified, so the more current flows across from collector to emitter.Ī PNP transistor works differently. And the more the base current is increased, There must be sufficient base current for an NPN transistor to turn on. If there is no base current, the transistor is (within limit), the more the transistor conducts across from collector to emitter. Let's review the more commonly used NPN transistor. The difference in the PNP transistor from the NPN is how power is biased to the transistor for it to
Like any transistor, a PNP provides amplificationĪnd/or switching capabilities to turn a load on or off connected to it. This article will show how to connect a PNP Transistor in a circuit for switching or forĪ PNP transistor is just like an NPN in terms of function, what it accomplishes in a circuit. How to Connect a PNP Transistor in a Circuit
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