Circuit Documentation

Summary

This circuit is a simple LED control circuit using an NPN transistor, resistors, a push button, and a Li-ion battery. The push button controls the LED, allowing it to turn on and off. The NPN transistor acts as a switch, and the resistors are used to limit the current through the circuit.

Component List

1. NPN Transistor (CBE)

   • Pins: collector, base, emitter
   • Description: A transistor used to amplify or switch electronic signals.

2. Resistor (220 Ohms)

   • Pins: pin1, pin2
   • Description: A resistor with a resistance of 220 Ohms.
   • Properties:
     • Resistance: 220 Ohms

3. Resistor (1000 Ohms)

   • Pins: pin1, pin2
   • Description: A resistor with a resistance of 1000 Ohms.
   • Properties:
     • Resistance: 1000 Ohms

4. LED: Two Pin (green)

   • Pins: cathode, anode
   • Description: A green LED used as an indicator.

5. Push Button Round

   • Pins: leg0, leg1
   • Description: A push button used to control the circuit.

6. Li-ion 18650 Battery

   • Pins: +, -
   • Description: A rechargeable Li-ion battery.

Wiring Details

NPN Transistor (CBE)

• Collector:

  • Connected to pin2 of the 220 Ohm resistor
  • Connected to the cathode of the green LED

• Base:

  • Connected to pin2 of the 1000 Ohm resistor

• Emitter:

  • Connected to the negative terminal of the Li-ion battery
  • Connected to the anode of the green LED

Resistor (220 Ohms)

• Pin1:

  • Connected to the positive terminal of the Li-ion battery
  • Connected to leg0 of the push button

• Pin2:

  • Connected to the collector of the NPN transistor
  • Connected to the cathode of the green LED

Resistor (1000 Ohms)

• Pin1:

  • Connected to leg1 of the push button

• Pin2:

  • Connected to the base of the NPN transistor

LED: Two Pin (green)

• Cathode:

  • Connected to pin2 of the 220 Ohm resistor
  • Connected to the collector of the NPN transistor

• Anode:

  • Connected to the emitter of the NPN transistor
  • Connected to the negative terminal of the Li-ion battery

Push Button Round

• Leg0:

  • Connected to pin1 of the 220 Ohm resistor
  • Connected to the positive terminal of the Li-ion battery

• Leg1:

  • Connected to pin1 of the 1000 Ohm resistor

Li-ion 18650 Battery

• Positive (+):

  • Connected to pin1 of the 220 Ohm resistor
  • Connected to leg0 of the push button

• Negative (-):

  • Connected to the emitter of the NPN transistor
  • Connected to the anode of the green LED

Code

There is no microcontroller code associated with this circuit.