Here’s a tutorial of sorts for a subset of the many features of the Hexinverter Mindphaser Complex Oscillator. In this tutorial I walk through five ways to modulate the Carrier … Read More

I bought a Patching Panda Operat oscillator full kit from Modular Addict. It is based on the SSI2130 integrated circuit, the same as used in the LA 67 T-ZED oscillator … Read More

I’d been looking for oscillators with a few specific requirements. 1) Analog, 2) Phase Modulation, and 3) DIY. The LA 67 T-ZED Oscillator meets all these and was on sale … Read More

Six years after I built the first one, I decided to build a second Dannysound EN129 Thru-Zero Oscillator. The design originated in the Electronotes newsletter #129, published by Bernie Hutchins … Read More

Filling out my 4U Serge rack project is a Serge design based Dual Negative Slopes plus Hills and Valleys from Low-Gain Electronics. Of course the original Serge module names were … Read More

I’ve finished building the Slightly Nasty Model 2331 Asymmetric Slew Limiter. Here I’ll describe the build and show scope photos of the various operating modes. Features The ASL is another … Read More

I scored this very cool VC SLEW LIMIT/LOCK module from Hale for my 4U Serge project. The VC SLEW LIMIT/LOCK is a dual channel, dual mode module that can accurately … Read More

The Dual Benjolin is finished, racked and patched. I rearranged the rack cases in my studio to accommodate the Benjolin, as well as to plan ahead for the upcoming 4U … Read More

Made a lot of progress since the first post about the Dual Benjolin project. At that point I had one assembled and tested board. Since then I’ve built the second … Read More

I was gifted a pair of Benjolin PC boards by Alan Rosetti. The Benjolin was originally designed by the late Rob Hordijk. There’s a good article about it on Perfect … Read More