Let's get in the time machine and go back to the bad old days. I was just getting into AudioDIwhY. And I knew even less about audio electronic design and fab then than I do now.
But out of the early days of my AudioDIWHY quest came a few modules I still use today and like a lot--one which is an LFO I conjured up from different dribs and drabs I found on the web circa 2003:
|spiffy new front panel from FPE.....|
As with a lot of my remaining 2003-2005 era modules: in August 2020 this one was showing its age; the original front panel had faded and was hard to read, and one of the switches had become sticky. It was built (poorly!) on perf. But I still liked the way it LFO'd and was using it all the time. It was time for a 20,000 mile tune up......
|Yo! hand cut and drilled out of sheet aluminum; the legends are water slide decals.|
|Still not sure I got the drawing 100% right? |
|PCB based on reverse engineered schematic you see above. Works--sort of??|