Quill

CARVER: Amp Modelling: Bob Carver & Transfer Function Amps

“I heard some guitar amp modelling the other day & was quite surprised at how it’s possible to cheaply create a convincing facsimile of a range of different classic amps from a single device. This brought back memories of the saga of Bob Carver and his Transfer Function Amps of the mid-80’s, so I did […]

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UNDERSTANDING: Impedance

PAUL MCGOWAN … For those with a clear understanding, this is a good post to skip. For those still unclear about what it means when we speak of high and low impedances, this might be right up your alley. The simplest way to think about impedance is to consider it an opposer. The higher the impedance […]

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UNDERSTANDING: Op amps vs. chips

I wince when people equate op-amps with chips. An op-amp describes a topology, not a chip. Yes, the op-amp topology is often built onto a silicon wafer, but we should be careful not to forever bind the two together unless we’re clear about the difference. (If you’re technically minded there’s a great paper describing in […]

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I am most comfortable in the company of engineers.

It’s more than just camaraderie. To non-engineering folk, our conversations might sound like a different language what with all the terminology bandied about. But more than terminology is the implied understanding of bigger concepts. Terms like -3dB, half power, slew rate, open loop, rise times, wave shapes, carry with them major implications. If our depth […]

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