JFET transistor are typically used in RF amplifier stage in radio receivers. Although there are other types of transistors like BJT, MOSFET and maybe diode can be used. In this blog post, it is explained why is JFET preferred transistor compared to…
A headphone amplifier is electronics circuit that amplifies the low level signal from signal source such as radio or PC to adequate high level signal to drive the speaker inside headphone. Here it is shown how to build inexpensive and simple headph…
Reactance modulator are RF modulators that changes the reactance of a transistor in accordance with the input modulating signal. Such reactance modulator when connected to oscillator circuit such as Hartley oscillator or Colpitts oscillator or Pie…
In this tutorial it is illustrated how quickly and easily we can design a common gate JFET (Junction Field-effect Transistors) amplifier with the help of the free online JFET Biasing and Amplifier Design Calculator . The calculator calculates the b…
Here it is illustrated how to design a Colpitts oscillator with self biased JFET as the amplifying element. Here it is illustrated how one can utilize online calculators for calculating component values for self biased JFET amplifier and for calcul…
If you want to design communication circuit or RF circuit in your project you might want to use an electronic oscillator. There are many types of oscillators. Some are based on op-amps some are based on transistors and so on. There are two things r…
JFET(Junction Field Effect Transistor) can be used in variety of application such as source follower or building JFET amplifier . Another popular application of JFET transistor is as a analog switching device and choppers. Here it is explained w…
Here it is illustrated how to design a JFET source follower with worked out example using 2N5459 JFET transistor. The source follower JFET circuit is also called common drain JFET in which the drain is common to both the input and the output. The i…
JFET(Junction Field Effect Transistor) can be used in three different topology- common source JFET amplifier which is most commonly used, common drain JFET amplifier which is also known as source follower and common gate JFET amplifier. Here it is …
Here JFET(Junction Field Effect Transistor) amplifier design in common source configuration with voltage divider biasing method is illustrated in this tutorial. First the operation of a common source JFET amplifier circuit is explained. Then it is …
In this tutorial we illustrate how to bias JFET transistor with worked out example calculation. This is follow up tutorial for previous tutorial how to bias JFET transistor . The JFET transistor used is 2N5459 N channel JFET. The worked out example…
