There is disclosed an energy recovering circuit with boosting voltage-up and an energy efficient method using the same that are capable of boosting the voltage factor of an energy recovered from the panel to rapidly re-appl it to the panel, to thereby reduce the charging time of a panel capacitor and...http://www.google.com.au/patents/US7138994?utm_source=gb-gplus-sharePatent US7138994 - Energy recovering circuit with boosting voltage-up and energy efficient method using the same