Continuous electric power supply circuit regulated by a reversible converter

A continuous supply electronic circuit for a timepiece, comprising:

• a power supply source of said electronic circuit arranged to store energy for supplying the timepiece;
• an intermittent electric source arranged to provide energy to said supply source wherein said supply electronic circuit further comprises:
• secondary energy storing means arranged to provide energy to said power supply source when said intermittent electric source does not provide energy to said power supply source;
• and
• an electric dc/dc reversible converter, coupled, on the one hand, to said power supply source, and, on the other hand, to the secondary energy storing means, the converter comprising switching means, and control means acting on said switching means so as to modify the configuration of said converter between
• a first configuration in which said converter transfers, in a forward direction, the energy coming from the intermittent electric source to the secondary energy storing means, and
• a second configuration in which the converter releases, in the opposite direction, the energy storied by the secondary energy storing means to said power supply source.