Circuit Documentation

Summary of the Circuit

This circuit appears to be a simple LED control circuit that uses a BC547 NPN transistor as a switch to turn an LED on and off. The LED's brightness can be adjusted by a potentiometer, which likely acts as a variable resistor to control the base current of the transistor. A 10kΩ resistor is connected to the base of the transistor to limit the current, and a 3.7V battery provides the power source for the circuit.

Component List

BC547 Transistor

• Type: NPN Bipolar Junction Transistor (BJT)
• Pins: Collector, Base, Emitter
• Description: Acts as a switch or amplifier in the circuit.

Potentiometer

• Type: Variable Resistor
• Pins: GND, Output, VCC
• Description: Allows for adjustment of resistance, which in turn controls the base current of the transistor and the brightness of the LED.

LED: Two Pin (blue)

• Type: Light Emitting Diode
• Pins: Cathode, Anode
• Description: Emits blue light when current flows through it from anode to cathode.

Resistor

• Type: Fixed Resistor
• Pins: Pin1, Pin2
• Value: 10kΩ
• Description: Limits the current flowing into the transistor's base to prevent damage.

3.7v Battery

• Type: Power Source
• Pins: + (positive), - (negative)
• Description: Provides the necessary voltage and current to power the circuit.

Wiring Details

BC547 Transistor

• Collector is connected to the cathode of the LED.
• Base is connected to pin2 of the Resistor.
• Emitter is connected to the negative terminal of the 3.7v battery and GND of the Potentiometer.

Potentiometer

• GND is connected to the Emitter of the BC547 Transistor.
• Output is connected to pin1 of the Resistor.
• VCC is connected to the anode of the LED and the positive terminal of the 3.7v battery.

LED: Two Pin (blue)

• Cathode is connected to the Collector of the BC547 Transistor.
• Anode is connected to the positive terminal of the 3.7v battery and VCC of the Potentiometer.

Resistor

• Pin1 is connected to the Output of the Potentiometer.
• Pin2 is connected to the Base of the BC547 Transistor.

3.7v Battery

• + (positive) is connected to the anode of the LED and VCC of the Potentiometer.
• - (negative) is connected to the Emitter of the BC547 Transistor.

Documented Code

There is no microcontroller or embedded code associated with this circuit as per the provided inputs. Therefore, this section is not applicable to the current documentation.