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UJT

Unijunction Transistor (UJT) 2N2646 Datasheet

Last Updated on June 8, 2024 by Swagatam Leave a Comment

ujt 2n2646

The 2N2646 is a type of Unijunction Transistor (UJT), which is commonly used in various oscillator based electronic circuit application. The following paragraphs provide the datasheet and the main specifications of the device: Pin Configuration: The following diagram shows the pinout configuration of the UJT 2N2646. General Characteristics: Electrical Specifications: Advantages and Disadvantages Common Applications […]

Filed Under: Datasheets and Components Tagged With: 2N2646, Datasheet, Transistor, UJT, Unijunction

7 Easy Sawtooth Waveform Generator Circuits using UJT, IC 555, and Transistors

Last Updated on January 12, 2025 by Swagatam 2 Comments

swatooth generator circuit compressed

In this post I have explained how to build 7 types of easy sawtooth generator circuits, using BJTs, UJTs, and IC 555. In a sawtooth waveform the voltage increases slowly in a slanting manner or diagonally, then as soon as it reaches the peak, the waveform voltage suddenly drops to zero. Once it drops to […]

Filed Under: Oscillator Circuits Tagged With: Circuits, Easy, Generator, Sawtooth, UJT, Waveform

10 Simple Unijunction Transistor (UJT) Circuit Diagrams Explained

Last Updated on January 17, 2025 by Swagatam 21 Comments

UJT Pulse Generator

In the earlier post I have explained comprehensively about how a unijunction transistor works, in this post I will elucidate a few interesting application circuits using this amazing device called UJT. The example application circuits using UJT which are explained in the article are: 1) Square Wave Pulse Generator The first design below demonstrates a […]

Filed Under: Oscillator Circuits Tagged With: Diagrams, Explained, Simple, Transistor, UJT, Unijunction

Unijunction Transistor (UJT) – Comprehensive Tutorial

Last Updated on June 1, 2021 by Swagatam 1 Comment

unijunction transistor internal layout

A unijunction transistor is a 3 terminal semiconductor device which is unlike a BJT has only a single pn junction. It is basically designed to be used as a single-stage oscillator circuit for generating pulsed signals suitable for digital-circuit applications. UJT Relaxation Oscillator Circuit The unijunction transistor could be typically wired in the form of […]

Filed Under: Electronics Theory Tagged With: Comprehensive, Transistor, Tutorial, UJT, Unijunction

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