SAMPLE AND HOLD CIRCUIT WITH SWITCHING ISOLATION

摘要

Sampling an unknown signal only for a single time interval and holding the resultant sampled signal value with these operations being substantially independent of frequency. A discharge circuit in shunt with the storage capacitor comprises a diode bridge having four matched diodes. A pair of common mode chokes are connected to the nodes of the diode bridge in order to provide isolation between the switching signal of the discharge circuit and the storage capacitor.