PCB Gerber Files All Gerber files for the replica PCB designs. Steam Resonator (Memo WFC 423-DA) The PCB replica is provided below. All components are through-hole (THT) in this revision. Unfortunately, the winding ratios aren't provided in the WFC 423-DA. Experimentation will be required.  A circuit analysis document will be coming a later date.   PCB Gerber Zip File: Steam Resonator PCB Gerbers_12-31-25.zip   CD4046 (Phase Lock Loop) Based Gated Frequency Generator NOTE FROM ETHAN CROWDER: This is a simple square wave oscillator, with close to a fixed 50% duty cycle, that utilizes two CD4046 Phase Lock Loop ICs. Four potentiometer connections have been included for each IC, that allows very precise frequency control. I've use four 10-Turn precision potentiometers. The CD4046's are supplied 12V. This was chosen for easier integration with more modern N-CH MOSFETS, which typically require a gate voltage of 10V minimum for full turn on.  PCB Gerber .ZIP Folder: PLL Gated Frequency Generator Gerbers.zip PC9XB - Variable Pulse Frequency Generator PCB Gerber .ZIP File:  PC9XC - Variable Gate Circuit PCB Gerber .ZIP File: PC9XC Gerbers.zip PC9XE - Sequential Gate Circuit PCB Gerber .ZIP File: PC9XE Gerbers.zip EPG - Magnetic Spin This circuit is currently being revised and tested. As of 1-1-26, please do not purchase at this time.  PCB Gerber .ZIP File: EPG Magnetic Spin Gerbers.zip