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NPN power transistor

TIP31C Working Principle

Learn how TIP31C works with an illustrated explanation and practical readings.

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TIP31C at a glance

Follow the labeled connections and functional stages

TIP31C working principle: illustrated functional stages, basic circuit and connections
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How it works

3 stages · Explore one step at a time

Step 1 / 3

Establish base current

Raise base above emitter through the resistor.

Step 2 / 3

Control the load path

Conventional current flows from collector to emitter.

Step 3 / 3

Release the base charge

The base-emitter return defines off; switching speed depends on drive and stored charge.

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