  We explore the collective phase dynamics of Wien-bridge oscillators coupled
resistively. We carefully analyze the behavior of two coupled oscillators,
obtaining a transformation from voltage to effective phase. From the phase
dynamics we show that the coupling can be quantitatively described by
Sakaguchi's modification to the Kuramoto model. We also examine an ensemble of
oscillators whose frequencies are taken from a flat distribution within a fixed
frequency interval. We characterize in detail the synchronized cluster, its
initial formation, as well as its effect on unsynchronized oscillators, all as
a function of a global coupling strength.
