Andy recommends favorite resources for basic op amp circuits and includes a portion of TI's AN-20. Test your knowledge with ...

The circuit in Figure 1 is suited for inductive sources such as a dynamic microphone, transformer or inductance sensor/pick up. Figure 1 A simple amplifier circuit suited for inductive sources such as ...

And that brings us to IR photodetector amplifiers. The circuit is “almost” a simple op-amp current-to-voltage (transimpedance) amplifier. But there are complications.

This cable tv amplifier circuit is a rf amplifier designed to be quickly installed between two coaxial cables. Both input and output impedances are compatible with 75 Ω cables. The main amplifier si ...

The opamp circuit is simple. We might have considered an LM386 or some other integrated audio amplifier block to get better performance without blowing up the parts count.

If you think most components are too complicated and just want great sound, the no-frills Cambridge AXA35 integrated amplifier is exactly what you’re looking for.

Discover how to boost Wi-Fi range with a simple homemade antenna amplifier. This DIY guide shows how to create an efficient antenna using basic materials and an amplifier. Improve your connection ...

The Hegel H400 is a "just add speakers" streaming amplifier designed to drive your expensive loudspeakers and make streaming super easy.

Transformerless circuits can cause safety or noise problems if connected to circuits that use earth grounds. Adding an op amp between the two can eliminate the safety problems ...