BC487G

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BC487G is a popular NPN bipolar junction transistor (BJT). These transistors can be used as a single stage amplifier and as a switch among other applications. The BC487G is suited for many consumer applications such as remote control protocols, in home theater receivers, and as a current amplifier.

A Look at the BC487G

The BC487G is a standard NPN BJT that has a maximum power dissipation of 500 mW and a collector-base voltage of 600 volts (Vcbo), a collector-emitter voltage of 50 volts (Vceo), and a maximum collector current of 1.5 amperes (Ic). The transistor also has a hFE of 180-320. The hFE is the representative of the gain of the transistor as it amplifies the current that passes through it. The higher the hFE, the higher the gain of the transistor.

Working Principle

BC487G is a bipolar junction transistor (BJT) which is normally operated in saturated mode. This means that the transistor can be either in n-channel or in p-channel configuration, which is determined by the DC supply voltage applied to the circuit. When the input is applied, current starts flowing through the base-emitter diode region known as the transistor ‘turns on’. This generates a voltage drop across the base-emitter and results in a collector current which is proportional to the base current. The collector current increases as the base current increases, and when the collector current is greater than the base current, the transistor is said to be in saturation. The collector current continues to decrease until it reaches a set value when the transistor is just fully saturated.

Application of BC487G

The BC487G is an NPN BJT, making it suitable for a wide range of applications. Some of the most common applications for the BC487G include switching, amplification and signal processing. As a switch, it can be used to control the output of a circuit, such as turning on a light or fan. As an amplifier, it can be used to increase the signal level of an audio signal. Finally, as a signal processor, it can be used for analogue to digital conversion or for pulse width modulation.

The BC487G can also be used in mobile phones and portable audio devices. It can be used in these applications as a signal amplifier, to boost the signal sent to the speakers or microphone, as well as a power amplifier, to help boost the signal sent to the antenna. Additionally, the BC487G can be used as an oscillator, providing the signal that the digital signal processor needs to convert sound waves into a signal that can be understood by the speaker.

The BC487G is also commonly used in control systems, such as robots, to regulate the speed and positioning of the robot. By controlling the voltage applied to the base of the transistor, it can be used to control the current supplied to the motor, allowing for precise control of the robot. Additionally, it can be used as a temperature controller, to accurately maintain a particular temperature.

Finally, the BC487G can be used in consumer electronics, such as in remote control protocols. This type of application requires the current to flow through the BJT in order to activate the device, producing the desired remote control signal.

Conclusion

The BC487G is a NPN BJT that can be used in a wide range of consumer applications, from amplifiers and signal processors to remote control protocols and consumer electronics. The transistor is suited to applications where precise control of the current is required, as it can be used as a switch and has a high hFE. Furthermore, the BC487G’s power rating and voltage ratings make it suitable for a wide range of consumer applications.

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