In Seemingly Simple Circuits: Transresistance Amplifier, Part 1– Approximating Op-Amps, the op-amp was approximated from a single-pole, finite gain amplifier to an infinite-gain, single-pole op-amp, ...

In order to help his friend prepare for a talk at DEFCON this weekend, [Craig] built an IR photodiode amplifier circuit. The circuit extended the detection range of the hack from a few inches to a few ...

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 ...

Parasound, a San Francisco-based manufacturer of high-end audio components, has announced that it is now shipping the first production samples of its much-anticipated John Curl designed Halo JC 3 ...

With fully balanced and improved circuitry throughout, the BAT VK-85 Preamp and REX 300 Amp claim pure musicality from a $27,500 combo. The REX 300 is a lower-powered version of the highly regarded ...