Chopper-amplifier for the voltage of a photovoltaic power source, in particular for a timepiece

摘要: In this booster, the voltage across terminals of photovoltaic power source (1) is regulated as a function reference (Vref) which chosen to be substantially equal corresponding maximum value voltage-power curve source. The generated in generator (9) compared (Vsc) (1), result sampled and influences duty cycle control signal (Fc) applied switching transistor (7). latter responsible for chopping current flowing from load (accumulator 6) through an inductor coil (4) diode (5).