Category Archives: Commentary

555 timer teardown (and a Retrovoltage drum trigger project)

Ken Shirriff’s blog has a fantastic and detailed teardown of a 555 timer, the ubiquitous decades-old timer circuit that turns up in so many places: If you’ve played around with electronic circuits, you probably know the 555 timer integrated circuit, … Continue reading

Posted in Collections, Commentary, DIY, Gadgets | Tagged , , , , , , | 1 Comment

What does everyone read?

Other than Retrovoltage (obviously!), what are your favorite electronics and tech blogs? Leave a comment with what you’re reading these days!

Posted in Commentary, Internet | 1 Comment

Like Classic Receivers? Check Out This Blog

If you’re reading this, you’re probably at least somewhat interested in vintage stereo gear, since that’s a huge amount of what I work on. There’s a lot of it out there! I just discovered a great new blog that showcases … Continue reading

Posted in Commentary, Internet | Tagged , | 2 Comments

Idea Poll: A tutorial on buying parts online?

Once again, I’ve been asked “Where do you buy your parts?” and that’s a question that comes up very regularly. (My answer?, of course.) I’ve heard from quite a few people over the years that can be intimidating for new … Continue reading

Posted in Commentary, DIY, Electronics | Tagged , | Leave a comment

How to Read Capacitor Codes

I ended up with a massive stash of mil-spec CDE Mica caps recently, and was searching for a refresher on decoding their military part numbers like “CM05FD221GP3”, since the caps came marked for their values but not their voltage ratings. … Continue reading

Posted in Commentary, DIY, Electronics | Tagged , | 1 Comment

Merry Christmas from Retrovoltage!

Radio & Television News, December 1954

Posted in Collections, Commentary, Vintage | Tagged , , , , , , , | 4 Comments

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

Posted in Collections, Commentary, Test Equipment | Tagged , , , , , , , , , , | 6 Comments