MJ15011G

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Transistors are widely used as amplifiers in electronics, so understanding the different type of transistors is important. One popular type, BJT transistors, consist of three terminals. The MJ15011G is a popular single BJT transistor, and is commonly used in the making of DIY projects. This article will discuss the application fields, as well as the working principle of the MJ15011G transistor.

Application field of MJ15011G

The MJ15011G is a dependable and inexpensive NPN transistor, making it suitable for commercial and DIY electronic projects. It can be used as an amplifier in circuits, as well as being a switch. Its usage is extensive, as it can be used in very simple circuits, as well as in more complex projects, such as audio amplifiers.

It is commonly used in:

• Motor driving circuits for robots.
• Power amplifiers for audio systems.
• Switch circuit for light dimming.

Working principle of MJ15011G

The MJ15011G has a Collector(C), an Emitter(E) and a Base(B). It works by using the Base as a “gate”, allowing or blocking electrons to flow to the Collector or Emitter. When a voltage is applied to the Base, the electrons will be pulled to the Base, forming a diode. This diode connects the Collector to the Emitter, allowing the current to flow freely.

The Base current (IB) controls the Collector current (IC). This is known as the “current gain”, which is the ratio between the IC and IB currents. The current gain of the MJ15011G is usually around 25 – 250. This means that for every one unit of current flowing into the Base, 25 – 250 units of current will flow into the Collector.

Conclusion

The MJ15011G transistor is a single PNP type transistor, often used in a variety of circuits. Its most common applications are motor driving, power amplifiers and light dimming circuits. The working principle of the MJ15011G is that the Base current controls the Collector current: the current gain ratio being 25 – 250.

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