EDN

Bipolar Transistor Circuit Design & Analysis, Part 4

In Parts 1, 2, and 3 we took a closer look at calculating “ac” gain and how to desensitize the circuit to temperature and transistor parameter variations. In part 4 we consider the effects of a ...
Electronic Design

Snubber Capacitors Stop Spikes

A snubber circuit limits voltage spikes in power converters. Snubbers are also used in the output of Class-D audio amplifiers for the same reasons (Fig. 1). When the transistor you use to switch the ...
Semiconductor Engineering

Gate Drive Circuit Without A Speed-Up Capacitor for a GaN Gate Injection Transistor

A technical paper titled “Gate Drive Circuit Suitable for a GaN Gate Injection Transistor” was published by researchers at Nagoya University. “A GaN gate injection transistor (GIT) has great potential ...
Hackaday

Circuit VR: Starting An Amplifier Design

Sometimes I wish FETs had become practical before bipolar transistors. A FET is a lot more like a tube and amplifies voltages. Bipolar transistors amplify current and that makes them a bit harder to ...
Nanowerk

An overview of the basic components found in modern electronics - capacitors, diodes, inductors, resistors and transistors

Most modern electronic devices consist of several key components: transistors, capacitors, resistors, inductors and diodes. Often, they are supplemented by additional components like crystals and ...
Electronic Design

Supercapacitors Power Round-the-Clock Photovoltaic Lighting System

How to build a photovoltaic light system that operates at all times and is maintenance-free. The key role of the supercapacitor in this design. What is the "Joule Thief" circuit? Delivering ...
EDN

Bipolar Transistor Circuit Design & Analysis, Part 5

In previous parts of this series we reviewed the basic transistor parameters that determine ac voltage gain and practical considerations limiting high gain. The role of a coupling capacitor was ...