Components Used:
- 2n2222A Transistor
- LED
- 10k Ohm resistor
- 100 Ohm resistor
- 47uf 25v
- Connectors
- 9v-12v power Supply
Gerber File:
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Circuit Diagram:
2N2222A Transistor :
The 2N2222A transistor is a legendary NPN bipolar junction transistor (BJT) that has been widely used in electronic circuits for decades. Its versatility, reliability, and affordability make it a popular choice among electronics enthusiasts and professionals alike.
Features
- NPN BJT
- Collector current: 800mA
- Collector-emitter voltage: 40V
- Base-emitter voltage: 6V
- Current gain (hFE): 100-300
- Switching speed: 100ns
Applications
- Amplifiers
- Switches
- Digital logic circuits
- Audio circuits
- Power supplies
- Motor control circuits
How to Use
- Connect the collector to the positive supply or load.
- Connect the emitter to ground or negative supply.
- Connect the base to the input signal or control voltage.
- Ensure proper biasing for linear amplification or switching.
Advantages
- Low cost
- High current gain
- Fast switching speed
- Wide availability
Disadvantages
- Limited power handling
- Not suitable for high-frequency applications
Alternatives
- 2N3904 (PNP complement)
- BC547 (similar NPN transistor)
- TIP41C (power transistor)
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