Chopper amplifer circuit made by TA7505

Published:2011/7/13 19:39:00 Author:leo | Keyword: Chopper, amplifer circuit | From:SeekIC

Picture 1 is a chopper amplifier made by TA7505, which contains a chopper circuit, synchronous rectifying and modulating circuit. The switch component of chopper and synchronous rectifier mainly adopts FET tube, such as VT1 (3SK38) in picture 1(a). This tube is a kind of FET tube which changes to stop state when the voltage is 3V(the maximum value). VT5 and VT6 can make up of multivibrator circuit which can generate the square wave voltage. The square wave voltage passes the trigger made by VT3 and VT4 to adjust the wave shape, after which the signals come to modulate the VT1 grid.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Amplifier_Circuit/Amplifier_Circuits-Vacuum_Tube/Chopper_amplifer_circuit_made_by_TA7505.html

Print this Page | Comments | Reading(3)