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What are the advantages of FET compared to transistor?
Because base current noise will increase with shaping time, a FET typically produces less noise than a bipolar junction transistor (BJT), and is found in noise-sensitive electronics such as tuners and low-noise amplifiers for VHF and satellite receivers. It is relatively immune to radiation.
What is the primary advantage of BJTs over FETs?
Difference between BJT and FET
| BJT | FET |
|---|---|
| BJTs are applicable for low-current applications. | FETs are applicable for low voltage applications. |
| BJTs consume high power | FETs consume low power |
| BJTs have a negative temperature coefficient | BJTs have a positive temperature coefficient |
What are the advantages of using a FET?
Advantages of FET :
- FET has a high input impedance of several megaohms.
- FET has less effect by radiation than BJT.
- Temperature stable than BJT.
- Less noise compare to BJT.
- Can be fabricated with fewer processing.
- Smaller in size.
- Longer life.
- High efficiency.
What are the advantages and disadvantages of FETs over BJTs?
FETs are more temperature stable than BJTs. FETs are generally easier to fabricate than BJTs. Greater numbers of devices can be fabricated on a single chip (i.e., increased packing density is possible). FETs react like voltage-controlled variable resistors for small values of drain-to-source voltage.
Which is better a BJT or a FET?
The advantages of FETs relative to BJTs are summarized as follows: FETs are voltage-sensitive devices with high input impedance (on the order of 10 7 to 10 12 Ω). One class of FETs (JFETs) generates lower noise than BJTs. FETs are more temperature stable than BJTs. FETs are generally easier to fabricate than BJTs.
How are BJTs and FETs used in electronics?
BJTS and FETS are available in a variety of packages based on the operating frequency, current, voltage, and power ratings. These types of devices allow a greater degree of control over their work. BJTS and FETs can be used as switches and amplifiers in electrical and electronics circuits.
Which is the advantage of a BJT in a transistor?
Transconductance is defined as the milliamp per volt ratio of the small change in the current output from an electronic device to the small change of voltage input. In other words, it is the gain of the transistor circuit. This is where BJTs have an advantage.
What are the advantages and disadvantages of FETs?
FETs react like voltage-controlled variable resistors for small values of drain-to-source voltage. The high input impedance of FETs permit them to store charge long enough to allow them to be used as storage elements. Power FETs can dissipate high power and can switch large currents.