Bryant Julstrom earned a BA in mathematics at Augustana College in Rock Island, Illinois, in 1972, and a PhD in computer science at The University of Iowa in 1987. He is currently a Professor in the Department of Computer Science and Information Technology at St. Cloud State University in St. Cloud, Minnesota. He is a licensed radio amateur with call sign KC0ZNG.
(Mostly) Restoring a Vintage Sidereal Clock
Refurbishing a clock to be able to observe the same patch of sky for several nights in a row.
Beginning to Build with Tubes
There are a number of reasons to pursue tube-based projects.
Transformer Based Power for Nixies
Discover a new way to power your Nixies.
Implementing Circuits on Protoboards
How do you go about building on a protoboard? Here’s how.
A Semiconductor-Based High Voltage Utility Power Supply
A utility supply like this has a small footprint on the bench and supports a wide range of experiments with tube circuits.
More Tricks with Old-School Digital Clocks
Variations and suggestions for building discrete-logic clocks.
An Old-School Digital Clock
Build a digital “old school” CMOS clock.