![]() To balance this, FETs or field-effect transistors are connected on the output side of the microphones. High impedance is one main characteristic of the output audio signal communicated by the condenser capsule that causes a significantly low amount of current to flow through the circuit. The capsule of a condenser microphone generally acts as a transducer that picks up sound waves as an input signal, pass it through the processor and produces an output signal that is electrically amplified and processed audio signal. ![]() For this purpose, usually, field-effect transistors are embedded in the internal circuitry of the microphones. Various microphones such as a condenser microphone typically make use of an electronic circuit that tends to perform impedance modification by converting mechanical waves into an electrical signal. Microphones are a classic example of daily use devices that make use of transistors for their basic operation. The amplification property of transistors can be utilized in research labs, sound systems, signal analysis and reconstruction, and various other related applications. This means even a small variation in the input signal causes a significantly large change in the output signal, thereby amplifying the input signal. Due to the high input and low output resistance of the circuit, the emitter current and the collector current tend to flow through the load resistor and lead to a large magnitude voltage drop across the load resistor. The DC bias voltage tends to maintain the forward bias condition of the transistor irrespective of the negative or the positive polarity of the input signal. A transistor is an electronic device that commonly functions as an amplifier when a DC bias voltage is applied across its emitter-base junction. ![]() Most amplifier circuits make use of transistors as their prime component to increase the strength of the input signal while maintaining the integrity of the information or the data possessed by it at the same time. Amplifier CircuitsĪmplification is the process by virtue of which the strength of a weak signal can be raised to a certain level. There are a number of daily life applications that make use of transistors to control and execute their basic operations. 10. Infrared Receivers or Invisible Light Receivers.This may lead the devices to break down easily in case of electrical and thermal events. Transistors also have certain disadvantages such as they have limited electron mobility and can not handle any type of interference introduced by cosmic radiations. Also, transistors do not operate on very high voltages, which is why they have significantly low power consumption and a faster switching rate. Some of the prominent advantages of transistors include compact size, less cost, low mechanical sensitivity, long life span, and high efficiency. Transistors can be broadly classified into three categories, namely, bipolar junction transistors or BJTs, field-effect transistors or FETs, and insulated-gate bipolar junction transistors or IGBJTs. The ability of transistors to control the flow of current through a circuit makes them fit for applications where switching, clipping of signals, amplification, or regulation of voltage is usually desired. A transistor is a three-terminal electronic component made up of semiconductor material that is basically used to control the flow of current through an electronic circuit. ![]()
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