A rectifier circuit produces an output which is a function of the magnitude of an input signal and has a controllable transient response. The circuit requires no rectification diodes. The voltage on a capacitor is sensed and compared with that of an input voltage. The operation of charging and discharging...http://www.google.fr/patents/US6445233?utm_source=gb-gplus-shareBrevet US6445233 - Multiple time constant rectifier apparatus and method
Multiple time constant rectifier apparatus and method
