Схемы - Усилители - 4

Jerry Steele

Inspired by the excellent idea shown in the article “Class AB 20-W current booster is insensitive to temperature variations” by Jordan Dimitrov ( Ref. 1 ), this variation of the design shown in Figure 1 enables an amplifier that can ...

Jordan Dimitrov

Class AB amplifiers have been the workhorses of the audio world, thanks to their simplicity, and their ability to deliver high power levels with low distortion. But there are also a number of gremlins that lurk within the AB architecture, mostly in ...

Chuck Wojslaw

The absolute-value amplifier is a basic building block in test-and-measurement and signal-processing applications. The addition of a DPP (digitally programmable potentiometer) adds another dimension, G (gain), to this key circuit. Because the gain ...

A widely-used push-pull configuration of an AB class amplifier is shown in Figure 1, but it needs some improvements. Figure 1. This configuration of an AB class amplifier have some improvements. First of all, let’s take a look how its thermal ...

The circuit in Figure 1 powers a microparticle and nanoparticle ion trap through a 1-to-5-turns-ratio, high-voltage transformer. It also works successfully as a driver for a piezo-tube scanner and in a near-field scanning optical microscope. The ...

Valery Babanin

The oscillator was intended for other purposes, but unexpectedly its breadboard prototype became in great demand for evaluating the performance of operational amplifiers purchased on well-known Internet sites. The simplest test of the op amp ...

EDN A true-differential, power-source-free, high-input-impedance amplifier with bipolar output would present distinct advantages in remote devices. Such an amplifier, with its bipolar output, would be a better choice than a unipolar, 4- to 20-mA ...