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How an NPN Transistor Works

How an NPN Transistor Works. Collector. NPN 2N3904. Base. Emitter. The flat side faces up. Take Inventory of your Parts. You will need the following parts from your kit: Breadboard 220 ohms resistor ( red , red , brown , gold ) 3300 ohms resistor ( orange , orange , red , gold )

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How an NPN Transistor Works

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  1. How an NPN Transistor Works Collector NPN 2N3904 Base Emitter The flat side faces up

  2. Take Inventory of your Parts You will need the following parts from your kit: Breadboard 220 ohms resistor (red, red, brown, gold) 3300 ohms resistor (orange, orange, red, gold) NPN Transistor 2 @ LED (light emitting diode) 9 volt battery lead 3 wires 9 volt battery Pushbutton switch

  3. Build the Circuit 220 Ohm collector base 3.3K Ohm emitter + 9 volts - Use this schematic to construct the experiment. Quick Check: Your circuit should like this one.

  4. Do the Experiment Connect the 9 volt battery. Observe the brightness of the LED’s. Press the pushbutton switch. Observe and compare the brightness of the LED’s. Release the pushbutton, both LED’s should turn off. • Troubleshooting: • If the LED’s do not light up, check to make sure they in correctly. • Check the battery. Does it have voltage? • Are there any breaks in the circuit? • Is the NPN in the right way?

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