How does a BC 547 transistor work?
The BC547 transistor is an NPN transistor. A small current of the base terminal of this transistor will control the large current of emitter and base terminals. The main function of this transistor is to amplify as well as switching purposes. The maximum gain current of this transistor is 800A.
What is the use of transistor BC547?
BC547 Transistor Application BC547 is usually used for current amplifier, quick switching and pulse-width modulation (PWM). Therefore, if you need to control the speed of a motor or actuator in some of your projects, you can simply use this transistor to achieve it.
What is the BC547 transistor pinout?
BC547 transistor pinout or pin diagram has three pins, starting from left: collector, emitter, and base respectively. BC547 is also used for the amplification of the input signals. A small amount of current at the base is used to control a large amount of current between the collector and emitter.
What is the difference between BC547 and BC548?
This group of NPN transistors share many specifications and characteristic curves, but differ in voltage ratings – the BC546 and BC547 are essentially the same as the BC548 but selected with higher breakdown voltages, while the BC549 is a low noise version, and the BC550 is both high-voltage and low-noise.
How use BC547 transistor as a switch?
TRANSISTOR AS A SWITCH It just bypasses the signal present of the collector while having active base condition. As soon as we press the button a signal (in form of voltage and current) will be received by the base of BJT which in turn allows electric current to pass from collector to emitter.
What is transistor BC547?
BC547 is a Bipolar Junction Transistor, abbreviated as BJT. It is an NPN transistor. It has three terminals named as: Emitter. Collector.
What is a BC547?
The BC547 is a NPN transistor meaning when power is applied to the base (control pin) it will flow from the collector to the emitter. Typically NPN transistors are used to “switch ground” on a device, meaning, they are placed after the load in a circuit.
What is transistor BC 547?
Can we use BC 548 instead of BC547?
1 Answer. You will be fine with BC548, BC547 or 2N3904 your application is not demanding.
Can I use BC547 instead of 2N3904?
The datasheet for the 2N3904 shows that its current gain is barely enough to use a resistor as high as 100k in that circuit so even more light would be needed to turn off the transistor. A BC547C has much more current gain and will work better.
What are the features of the BC547 transistor?
The features of the BC547 transistor include the following. The ON/OFF touch switch using transistor BC547 is shown below. The circuit is activated once the power supply is given to the circuit. Once the supply is given to the circuit, the relay gets off mode.
Which is the highest transition frequency of BC547?
The utmost transition frequency of BC547 is 300MHz so that it will perform well within RF circuits. Drivers like an LED driver, Relay Driver, etc. Amplifiers like Audio, signal, etc..
When does the Q3 transistor get off mode?
The circuit is activated once the power supply is given to the circuit. Once the supply is given to the circuit, the relay gets off mode. Thus, the base terminal of the Q3 transistor is high throughout the R7 resistor to maintain in cut-off condition.
How to test the working pattern of a transistor?
For testing the basic working pattern of the transistor, you would further need to fix a pot along the “base”, positive and the negative terminal. Next, connect an LED and a resistor to the collector of the transistor, with the help of the diagram. The LED will provide you with immediate visual information regarding the happenings with the circuit.