A BJT is one of the most common types of transistors and can be either NPN or PNP. This means a BJT consists of three terminals: the emitter, the base and the collector. By joining these three layers, a BJT can amplify an electrical signal and switch the current on and off. Two kind...
This tiny little AC signal is what the guitar amp will amplify until it's strong enough to move a speaker cone in and out. The speaker cone alternates in and out with the alternating current from the guitar's pickup coil. For every guitar string movement there is a corresponding speaker ...
In this circuit, the chip can detect when a key is pressed. It then translates the key into a sequence something like morse code, with a different sequence for each different key. The chip sends that signal out to the transistor to amplify the signal and make it stronger. The Circuit ...
A Bipolar Junction Transistor (also known as a BJT or BJT Transistor) is a three-terminal semiconductor device consisting of two p-n junctions which are able to amplify or magnify a signal. It is acurrentcontrolled device. The three terminals of the BJT are the base, the collector and the...
basically a current amplifier which takes a low-current signal from the microcontroller and gives out a proportionally higher current signal which can control and drive a motor. In most cases, a transistor can act as a switch and perform this task which drives the motor in a single direction....
signal is non-linear. Since a capacitor does not charge up linearly, it does not produce a linear ramp. Instead, a capacitor charges up exponentially according to the formula, V= V0(1 - e-t/T0. So what you'll see is a signal, such as shown above, in which the incline parabolic...
This technical article discusses the application of signal chain, power management, and microcontroller ICs in a practical force-sensing product—a bicycle power meter. The reader will learn the physics underlying the operation of bicycle power meters and the design of the electronics. The solution...
always amplify there are certain conditions for that right so in this example we'll explore this in great detail we'll understand under what conditions our transistor acts as an amplifier and under what condition it doesn't so we'll explore the complete behavior of a transistor in this video...
Johnson refined the design of the gramophone, which until that time had been dominated by a large horn to amplify the sound. In order to fit more comfortably in a home, the horn was tilted down and the entire device placed in a cabinet. This new design, introduced in 1906, was called ...
Like any transistor, BJT can amplify a signal or switch a high power load using a very small signal. In terms of the architecture of BJT, three big terms come to play. They are regions, junctions, and modes of operation. BJT is divided into three regions based on...