AUDIO_INDUCTION_RECEIVE

Published:2009/7/10 4:43:00 Author:May | From:SeekIC

Used to pick up audio signal being fed to low-impedance single-wire loop encircling room or other area to be covered. Pickup loop L1 is 100-500 turns wound around plastic case of receiver. Opamp sections are from Motorola MC3401P or National LM3900 quad opamp. Supply can be 9-15 V. Requires no FCC license. Can be used as private paging system if audio amplifier of transmitter has microphone input.-C. D. Rakes, Integrated Circuit Projects, Howard W. Sams, Indianapolis, IN, 1975, p 23-25.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Communication_Circuit/AUDIO_INDUCTION_RECEIVE.html

Print this Page | Comments | Reading(3)