LED Dimmer Circuits with BC547 Transistors

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Questions and Answers

What is the function of a BC547 transistor in the LED dimmer circuit?

Voltage regulation
Current control
Amplification and switching applications (correct)
Data processing

Which terminals of the transistor are used to control the flow of current?

Emitter and cathode
Base, collector, and emitter (correct)
Base and emitter
Anode and cathode

What is the purpose of the 10kohm resistor in the LED dimmer circuit?

To control the brightness of the LED
To regulate voltage
To amplify the signal
To limit current (correct)

What is the role of the 9V battery in the LED dimmer circuit?

To provide power (A) Signup and view all the answers

In which type of circuit is the BC547 transistor commonly used?

Low power amplification and switching (B) Signup and view all the answers

What are the hardware components required for the LED dimmer circuit?

Transistor BC547, Battery 9V, Resistor 10kohm, LED 5MM Signup and view all the answers

Explain the function of a BC547 transistor in the LED dimmer circuit.

The BC547 transistor is used for low power amplification, switching applications, and in dimmer circuits to control the brightness of the LED. Signup and view all the answers

How does a transistor control the flow of current in the LED dimmer circuit?

The transistor controls the flow of current by regulating the current between its terminals - the base, collector, and emitter. Signup and view all the answers