The power of impedance

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I am not sure if the headline of today’s post is entirely accurate but I just loved the way it read. I am not a poet but I am taking license.

Over the last two days, we’ve been discussing output impedance as it applies to power amps and loudspeakers. It’s time to move the impedance conversation from speakers to AC power.

Our Power Plant AC regenerators are somewhat simple devices. They consist of a powerful class AB amplifier with a sine wave generator at its input. The sine wave generator outputs a clean 50Hz for 230-volt countries and 60Hz for 120-volt countries. That’s it in a nutshell, though to make this actually a practical reality it takes a lot of engineering, devices, and technology.

As with a power amplifier connected to speakers the particulars of design have a lot to do with system performance. The same can be said for the power amplifier producing AC voltage—in particular, output impedance: important for woofer control, critical for powering equipment.

This is something we discovered years ago using oversized power transformers. The bigger the transformer the better equipment sounded. In fact, power transformers overrated by as much as ten, sometimes twenty times, were noticeably superior to adequately sized transformers. This puzzled us for years until we realized it was the lower impedance and DC R of the transformer secondary that was providing the improved benefits.

And from that realization was born the idea of the Power Plant regenerator.

More tomorrow.