Flip the switch to turn the circuit on.
The four-transformer abomination is actually one big transformer with three windings, one of which has a center tap.
The component values were chosen more or less at random and tuned to produce an approximate 120V RMS 60Hz sine wave because the schematic provided did not give any component information.
I got this circuit from wikipedia (wikipedia.org/wiki/Royer_oscillator). The Royer oscillator has a very similar circuit topology with the only difference being the absence of the inductor (replaced with a wire) and capacitor (replaced with air or other insulation). The Royer oscillator is a relaxation oscillator based on the saturation of the transformer core and produces a square wave that flips when the transformer saturates. This means the frequency is dependent on the saturation current of the transformer. With the addition of an inductor and capacitor, the mode of operation changes entirely and it becomes a Baxandall oscillator. It no longer operates as a relaxation oscillator and instead becomes an LC resonator with positive feedback. This has the advantage of producing an approximate sine wave which makes it more useful as a DC to AC power converter. It also doesn’t require the transformer to saturate for proper operation. In other words, while the circuit topology and schematic are extremely similar to that of the Royer oscillator, the Baxandall oscillator actually operates completely differently.
