Circuit Documentation

Summary

This circuit consists of multiple BC547 transistors, resistors, LEDs, a buzzer, and a 9V battery. The circuit is designed to control the LEDs and buzzer using the transistors and resistors. The alligator clip cables are used to make connections between various components.

Component List

1. BC547 Transistor

   • Pins: Collector, Base, Emitter
   • Description: NPN Bipolar Junction Transistor

2. Resistor

   • Pins: pin1, pin2
   • Description: Fixed Resistor
   • Properties:
     • Resistance: 330 Ohms

3. Resistor

   • Pins: pin1, pin2
   • Description: Fixed Resistor
   • Properties:
     • Resistance: 10,000 Ohms

4. LED: Two Pin (red)

   • Pins: cathode, anode
   • Description: Red Light Emitting Diode

5. LED: Two Pin (green)

   • Pins: cathode, anode
   • Description: Green Light Emitting Diode

6. LED: Two Pin (yellow)

   • Pins: cathode, anode
   • Description: Yellow Light Emitting Diode

7. Buzzer

   • Pins: GND, IN
   • Description: Piezoelectric Buzzer

8. 9V battery

   • Pins: +, -
   • Description: 9V Power Supply

9. 12978-alligator_clip_cable_half-red

   • Pins: Pin, Alligator
   • Description: Red Alligator Clip Cable

10. 12978-alligator_clip_cable_half-yellow

    • Pins: Pin, Alligator
    • Description: Yellow Alligator Clip Cable

11. 12978-alligator_clip_cable_half-green

    • Pins: Pin, Alligator
    • Description: Green Alligator Clip Cable

Wiring Details

9V Battery

• + is connected to:

  • Resistor (pin2) with 330 Ohms
  • Resistor (pin2) with 330 Ohms
  • Resistor (pin2) with 10,000 Ohms

• - is connected to:

  • Red LED (cathode)
  • Buzzer (GND)
  • Yellow LED (cathode)
  • Green LED (cathode)

BC547 Transistor

• Collector of the first transistor is connected to:

  • Resistor (pin1) with 330 Ohms

• Base of the first transistor is connected to:

  • Red Alligator Clip Cable (Pin)
  • Buzzer (IN)

• Emitter of the first transistor is connected to:

  • Red LED (anode)

---

• Collector of the second transistor is connected to:

  • Resistor (pin1) with 10,000 Ohms

• Base of the second transistor is connected to:

  • Green Alligator Clip Cable (Pin)

• Emitter of the second transistor is connected to:

  • Green LED (anode)

---

• Collector of the third transistor is connected to:

  • Resistor (pin1) with 330 Ohms

• Base of the third transistor is connected to:

  • Yellow Alligator Clip Cable (Pin)

• Emitter of the third transistor is connected to:

  • Yellow LED (anode)

Resistors

• Resistor with 330 Ohms (first instance)

  • pin1 is connected to: BC547 Transistor (Collector)
  • pin2 is connected to: 9V Battery (+)

• Resistor with 10,000 Ohms

  • pin1 is connected to: BC547 Transistor (Collector)
  • pin2 is connected to: 9V Battery (+)

• Resistor with 330 Ohms (second instance)

  • pin1 is connected to: BC547 Transistor (Collector)
  • pin2 is connected to: 9V Battery (+)

LEDs

• Red LED

  • cathode is connected to: 9V Battery (-)
  • anode is connected to: BC547 Transistor (Emitter)

• Green LED

  • cathode is connected to: 9V Battery (-)
  • anode is connected to: BC547 Transistor (Emitter)

• Yellow LED

  • cathode is connected to: 9V Battery (-)
  • anode is connected to: BC547 Transistor (Emitter)

Buzzer

• GND is connected to: 9V Battery (-)
• IN is connected to: Red Alligator Clip Cable (Pin)

Alligator Clip Cables

• Red Alligator Clip Cable

  • Pin is connected to: Buzzer (IN)
  • Alligator is connected to: BC547 Transistor (Base)

• Yellow Alligator Clip Cable

  • Pin is connected to: BC547 Transistor (Base)
  • Alligator is connected to: BC547 Transistor (Base)

• Green Alligator Clip Cable

  • Pin is connected to: BC547 Transistor (Base)
  • Alligator is connected to: BC547 Transistor (Base)

Code

There is no code provided for this circuit.