Kinesis,
60hz AC = 120hz bumped DC (unregulated)
If you use the circuitboard of Stan, as shown in the schematic, you will see that it uses a frequency that is higher then the base bumps of the 120hz.
You do not end up with gates after 3 or 4 DC bumps, like on the drawing of Stan, but you get multiple gates in each bump.....if you know what i mean.
The circuit is used to set the pulse frequency. The 120hz or 100hz in my country, are the gates.
best regards
Steve