Brand New BiCMOS Flexible Transistor

The transistor revolutionized the field of electronics, and paved the way for smaller and cheaper radios, calculators, and computers, among other things since its very first practically implemented device as a point-contact-transistor invented in 1947 and getting the Nobel Prize in Physics in 1956. Now, engineers from the University of Wisconsin-Madison (UW-Madison) have built the most flexible, fully-funct ...

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20 SEGMENT JUMBO SIZE SPI BARGRAPH DISPLAY

Jumbo 20 Segment SPI (Serial) bar graph driver using 74HC595 serial to parallel converter IC and BC635 display driver transistor. This project is useful for application like Amusement machines, arcade gaming, voltage display, current display, pressure sensor display, temperature sensor display , process control equipment, battery condition monitor and many more. Each segment of display consist 10 LED Bargra ...

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High- Frequency Transistor Amplifier Calculator

Common-Emitter and Common-Collector Transistor Amplifier Calculator for High-frequency Operation Analysis of the bipolar transistor amplifier at low-frequency is relatively easy, and several calculators exist online that do a good job. For high-frequency operation, there are fewer references available. For my projects, I like to build a reference spreadhseet where everything is in one place. This allows me ...

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TraId – Transistor type & pinout identifier

I've been a bit busy the last couple of weeks but I've now finished my 22'nd Project A Week. Maybe I have to change the name to PAAW instead (Project Almost A Week) ^_^ TraId is a really low cost version of the Part Ninja. It's made to only identify the pinout and type (NPN/PNP) of a transistor and display the results on eight LEDs. Currently the firmware only handles BJTs but I think FETs should be possibl ...

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Berkeley Lab makes graphene-MoS2 transistor

U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) has developed a way to assemble transistors based on the 2D materials graphene and molybdenum disulfide. The method etches narrow channels in conducting graphene laid down on a silicon-dioxide substrate. These channels are then filled with a transition-metal dichalcogenide, or TMDC, or more specifically MoS2. Both of these mate ...

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Single transistor provides short-circuit protection

In certain dc/dc-converter applications, on-chip, cycle-by-cycle current limit may be insufficient protection to prevent a failure during a short circuit. A nonsynchronous boost converter provides a direct path from the input to the short circuit through the inductor and the catch diode. Regardless of current-limit protection in the IC, when a short circuit exists in the load, extremely high currents that f ...

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USB curve tracer for NPN transistors

Curve tracer is an electronic test instrument to analyze the characteristics of transistors and other discrete semiconductors. In this post we construct USB base curve tracer to analyze properties of NPN transistors. This curve tracer is build around Microchip's PIC18F4550 MCU and it use simple Windows based GUI application to plot captured data of a transistor. In this design PIC18F4550 MCU is used to esta ...

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Using Transistor as a Switch

Most of microcontrollers work within 5 volt environment and the I/O port can only handle current up to 20mA; therefore if we want to attach the microcontroller’s I/O port to different voltage level circuit or to drive devices with more than 20mA; we need to use the interface circuit. One of the popular method is to use the Bipolar Junction Transistor (BJT) or we just called it transistor in this tutorial. I ...

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New flat transistor defies theoretical limit

A team of researchers with members from the University of California and Rice University has found a way to get a flat transistor to defy theoretical limitations on Field Effect Transistors (FETs). In their paper published in the journal Nature, the team describes their work and why they believe it could lead to consumer devices that have both smaller electronics and longer battery life. Katsuhiro Tomioka w ...

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[Article] Basic Transistor Types

In this article we will review the basic transistor types and their function. We will cover bipolar transistor, Junction FET, MOSFET and UJT transistor types. Feel free to comment with other transistor types you know. Bipolar Transistor   Bipolar transistors are three terminal devices and act like electrically controlled switches of as current/voltage amplifiers. They come in two types either npn or pn ...

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