The D.C Amplifier Circuit by Using Switches and Charging Capacitors

Published:2011/5/8 23:50:00 Author:Borg | Keyword: D.C Amplifier Circuit, Switches, Charging Capacitors | From:SeekIC

An Amplifier Circuit without any Amplifier:As shown is the amplification circuit without any amplifiers.Thisis a series amplifier circuit formed by switches and charging capacitors,which has a steady power of 8 and requires 8 fixed periods as an average time of input signal. The process ofthe circuit is that a sample clock drived devider IC3(74HC393) of 400Hz output to choose a capacitor to cross the analog switches IC1 and IC2 forming a charging circuit, and then IC2 will couple the input signals to each capacitor, while IC2 is to provide a corresponding current for every capaticor to come back to the circuit. When six contacts of IC1 and IC2 (1NH)are under low electric levels, these analog switches will be turned off. Under this condition, the total voltage on the 8 series capatitors is 8 times ashighasaverage input voltage. If the switches are effective, the output voltage can be put on aprobeor amplifierof difference input. Moreover,this circuit has a lowrequirement on the frequecy of the clock.



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