  Transport current distribution in the branches of a doubly connected
superconductor in the form of a thin-film high-inductance circuit with two
bridges of different width in the branches was measured. For the transport
current lower than the sum of critical currents of the bridges, its
distribution was found to exhibit an anomalous behavior upon reaching the
critical current of one of the bridges. For a fixed value of the transport
current through the circuit higher than the sum of critical currents of the
bridges, low-frequency continuous harmonic voltage self-oscillations together
with synchronous current self-oscillations appeared in the circuit branches.
The mechanism responsible for the onset of the self-oscillations is discussed.
