Circuit Documentation

Summary

This circuit consists of a Li-ion 18650 battery, resistors, NPN transistors, push buttons, and an LED. The circuit is designed to control the LED using the push buttons and transistors, with resistors used for current limiting and biasing.

Component List

1. Resistor (220 Ohms)

   • Pins: pin1, pin2
   • Description: Current limiting resistor

2. Resistor (1000 Ohms)

   • Pins: pin1, pin2
   • Description: Current limiting resistor

3. NPN Transistor (CBE)

   • Pins: collector, base, emitter
   • Description: Used for switching

4. Push Button Round

   • Pins: leg0, leg1
   • Description: User input for controlling the circuit

5. Li-ion 18650 Battery

   • Pins: +, -
   • Description: Power source for the circuit

6. LED: Two Pin (green)

   • Pins: cathode, anode
   • Description: Visual indicator

Wiring Details

Li-ion 18650 Battery

• + is connected to:

  • Resistor (220 Ohms) pin1
  • Resistor (1000 Ohms) pin1
  • Resistor (1000 Ohms) pin1

• - is connected to:

  • NPN Transistor (CBE) emitter
  • NPN Transistor (CBE) emitter

Resistor (220 Ohms)

• pin1 is connected to:

  • Li-ion 18650 Battery +

• pin2 is connected to:

  • LED: Two Pin (green) cathode

Resistor (1000 Ohms)

• pin1 is connected to:

  • Li-ion 18650 Battery +

• pin2 is connected to:

  • Push Button Round leg0

Resistor (1000 Ohms)

• pin1 is connected to:

  • Li-ion 18650 Battery +

• pin2 is connected to:

  • Push Button Round leg0

NPN Transistor (CBE)

• collector is connected to:

  • NPN Transistor (CBE) collector
  • LED: Two Pin (green) anode

• base is connected to:

  • Push Button Round leg1

• emitter is connected to:

  • Li-ion 18650 Battery -

NPN Transistor (CBE)

• collector is connected to:

  • NPN Transistor (CBE) collector
  • LED: Two Pin (green) anode

• base is connected to:

  • Push Button Round leg1

• emitter is connected to:

  • Li-ion 18650 Battery -

Push Button Round

• leg0 is connected to:

  • Resistor (1000 Ohms) pin2
  • Resistor (1000 Ohms) pin2

• leg1 is connected to:

  • NPN Transistor (CBE) base
  • NPN Transistor (CBE) base

Push Button Round

• leg0 is connected to:

  • Resistor (1000 Ohms) pin2

• leg1 is connected to:

  • NPN Transistor (CBE) base

LED: Two Pin (green)

• cathode is connected to:

  • Resistor (220 Ohms) pin2

• anode is connected to:

  • NPN Transistor (CBE) collector
  • NPN Transistor (CBE) collector

Code

No microcontroller code is provided for this circuit.