Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various components such as transistors, resistors, an LED, a USB connection, and a battery pack. The circuit is designed to control the LED using transistors and resistors, powered by a USB connection and a battery pack.

Component List

1. TIP41C Transistor

   • Description: NPN power transistor
   • Pins: Base, Collector, Emitter

2. Resistor (560 Ohms)

   • Description: Fixed resistor
   • Pins: pin1, pin2
   • Properties: Resistance: 560 Ohms

3. Resistor (47 Ohms)

   • Description: Fixed resistor
   • Pins: pin1, pin2
   • Properties: Resistance: 47 Ohms

4. PNP Transistor (EBC)

   • Description: PNP transistor
   • Pins: emitter, base, collector

5. LED: Two Pin (red)

   • Description: Red LED
   • Pins: cathode, anode

6. Resistor (1000 Ohms)

   • Description: Fixed resistor
   • Pins: pin1, pin2
   • Properties: Resistance: 1000 Ohms

7. USB male 2 pin connection

   • Description: USB power connection
   • Pins: Negative -, Positive +

8. 18650 Li-ion Battery x 2

   • Description: Battery pack
   • Pins: +, -

Wiring Details

TIP41C Transistor

• Base is connected to:

  • pin1 of Resistor (47 Ohms)
  • anode of LED: Two Pin (red)

• Collector is connected to:

  • pin2 of Resistor (47 Ohms)
  • Positive + of USB male 2 pin connection
  • • of 18650 Li-ion Battery x 2

• Emitter is connected to:

  • pin2 of Resistor (560 Ohms)

Resistor (560 Ohms)

• pin1 is connected to:

  • pin2 of Resistor (1000 Ohms)
  • emitter of PNP Transistor (EBC)

• pin2 is connected to:

  • Emitter of TIP41C Transistor

Resistor (47 Ohms)

• pin1 is connected to:

  • Base of TIP41C Transistor
  • anode of LED: Two Pin (red)

• pin2 is connected to:

  • Collector of TIP41C Transistor
  • Positive + of USB male 2 pin connection
  • • of 18650 Li-ion Battery x 2

PNP Transistor (EBC)

• emitter is connected to:

  • pin2 of Resistor (1000 Ohms)
  • pin1 of Resistor (560 Ohms)

• base is connected to:

  • Negative - of USB male 2 pin connection
  • pin1 of Resistor (1000 Ohms)
  • • of 18650 Li-ion Battery x 2

• collector is connected to:

  • cathode of LED: Two Pin (red)

LED: Two Pin (red)

• anode is connected to:

  • pin1 of Resistor (47 Ohms)
  • Base of TIP41C Transistor

• cathode is connected to:

  • collector of PNP Transistor (EBC)

Resistor (1000 Ohms)

• pin1 is connected to:

  • Negative - of USB male 2 pin connection
  • base of PNP Transistor (EBC)
  • • of 18650 Li-ion Battery x 2

• pin2 is connected to:

  • pin1 of Resistor (560 Ohms)
  • emitter of PNP Transistor (EBC)

USB male 2 pin connection

• Positive + is connected to:

  • pin2 of Resistor (47 Ohms)
  • Collector of TIP41C Transistor
  • • of 18650 Li-ion Battery x 2

• Negative - is connected to:

  • pin1 of Resistor (1000 Ohms)
  • base of PNP Transistor (EBC)
  • • of 18650 Li-ion Battery x 2

18650 Li-ion Battery x 2

• + is connected to:

  • pin2 of Resistor (47 Ohms)
  • Collector of TIP41C Transistor
  • Positive + of USB male 2 pin connection

• - is connected to:

  • pin1 of Resistor (1000 Ohms)
  • base of PNP Transistor (EBC)
  • Negative - of USB male 2 pin connection

Code

There is no microcontroller code associated with this circuit.