Category Archives: Mr Carlson’s Lab

NIXIE Tube Programmable Frequency Display

How to build a programmable frequency counter for your favorite receiver, with “off the shelf parts!” Give that old radio receiver a digital NIXIE tube display. No special programming required. Join Paul in the Lab as he thoroughly explains how this, and many other frequency counters work.

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The Crystal Oscillator and Frequency Division

In this video, Paul explains how to make a simple crystal oscillator, buffer and frequency division chain. This can be used for many different applications, IE: frequency standards, clocks, frequency counters and more. This is the second video in a series on how to build a Nixie tube frequency counter. Continue reading The Crystal Oscillator and Frequency Division

Signal Generator Troubleshooting Repair and Modification

Join Paul in the Lab as he repairs and improves a Precision Apparatus Company E-200-C series signal generator. Learn how to adapt a frequency counter to any older signal generator. Follow along as Paul describes how this signal generator works, and explains the factory schematic in detail. “More troubleshooting adventures.”

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