Phase Selectable VIC

 

Utilizing DPDT toggle switches to allow inline phase inversion of each VIC component allow significant selectivity in operational configurations.

450VDC push-pull EL34 vacuum tube driven VIC 4:1 stepdown ferromagnetic core

 

Earlier version of above, but with an added DPDT relay driven by a 3rd signal input and darlington driver, attempting the Crossover Voltage Switching utilized in the Steam Resonator.