Category Archives: Collections

Building a Better Voltage Regulator

Glancing through my feeds, I stumbled across a note on The Paleotechnologist describing a new replacement for the venerable LM7805 linear regulator IC. It turns up in a ton of devices, pretty much anything with a medium-current 5V rail including … Continue reading

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The Speaker Spotter – February 14th, 2016

Another installment of the occasional series “The Speaker Spotter”, showcasing interesting speakers for sale right now on the local Seattle Craigslist. As always, I am not affiliated with any of these postings. If the linked ad doesn’t load, it’s likely … Continue reading

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Merry Christmas from Retrovoltage!

Radio & Television News, December 1954

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What’s On Your Workbench?

People ask me what kind of gear I use at Retrovoltage and at Rain City Audio for projects. So, here we go: While it’s by no means the best-equipped workbench out there, it has a good mix of lab- and service-grade … Continue reading

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Assembling Transistor Radios in 1955

Here’s a great documentary short from 1955 showing how portable transistor radios were assembled. It’s super retro! (2:35) Want to learn more about transistors? Just a few years later the US Information Agency produced an 8-minute short film about the … Continue reading

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It’s Beginning To Look A Lot Like Christmas

Bring the Sound of Christmas Into Your Home with RCA Victor Radio

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Make Christmas Special This Year with Allied Radio!

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