npnvspnp
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— | npnvspnp [2013/08/13 12:13] (current) – created - external edit 127.0.0.1 | ||
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+ | ==== NPN ==== | ||
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+ | NPN. If the base is at a higher voltage than the emitter, current flows from collector to emitter. | ||
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+ | NPN. Small amount of current also flows from base to emitter. | ||
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+ | NPN. Voltage at base controls amount of current flow through transistor (collector to emitter). | ||
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+ | [[image: | ||
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+ | ==== PNP ==== | ||
+ | PNP. If the base is at a voltage than the emitter, current flows from emitter to collector. | ||
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+ | PNP. Small amount of current also flows from emitter to base. | ||
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+ | PNP. Voltage at base controls amount of current flow through transistor (emitter to collector). | ||
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+ | [[image: | ||
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+ | Follow the arrow to see the direction of current flow. | ||
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+ | ==== MNEMONIC AID ==== | ||
+ | To figure out which is which when you're reading a schematic, remember this: | ||
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+ | **N**ot **P**ointed i**N** (NPN) Arrow points away from junction. | ||
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+ | **P**ointed i**N**. (PNP) Arrow points toward junction. | ||
npnvspnp.txt · Last modified: 2013/08/13 12:13 by 127.0.0.1