The recent EDN article of Bruce Trump () on the input impedance of an op-amp circuit took into account the single-pole roll-off of its loop gain. He showed with a simple derivation how the equivalent ...

Variable gain amplifiers often use a mechanical potentiometer to set the gain. An example is a volume control dial. However, when the analog signal path is digitally controlled, a digital ...

Andy recommends favorite resources for basic op amp circuits and includes a portion of TI's AN-20. Test your knowledge with our op amp quiz; answer explanations are included. By 1969, a fledgling ...

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 ...

Elsevier announced the publication of Analog Circuit Design Volume Three: Design Note Collection, the next book in the Analog Circuit Design series, edited by Bob Dobkin and John Hamburger. Dobkin has ...

I have an LG tv with optical spdif out, going into a cheap "Audio Rush decoder" the decoder has 6 channels out (fl, fr, rl, rr,cen, Sw) which go to straight in my power amp "TPA3116 5.1 amp 100wx1, ...