Build a Precision Narrow Band Tone Switch Circuit Diagram

How to Build a Precision Narrow Band Tone Switch Circuit Diagram. This is a simple Precision Narrow Band Tone Switch Circuit Diagram. This signal tracker and lock detector combine to make a precision tone switch. Filter R3/R4/C2 determines signal capture and tracking range, as well as settling time. Max. VCO frequency: R& Min. VCO frequency: + Pin 9 voltage affects both. 

 Precision Narrow Band Tone Switch Circuit Diagram

Precision Narrow Band Tone Switch Circuit Diagram


The minimum at pin 9 is 0 V and the maximum at pin 9 is VDD. In the lock detector, the PC (phase comparator) outputs are pulses whose width is proportional to the phase difference between the two PC inputs. At lock up, the two PC outputs are almost mirror images. The output of IC1A remains low and IC1B is high. This lights LED1. If the loop is unlocked, the LED will not light.

0 comments:

Post a Comment

All updates in Your Inbox

Enter your email address:

Delivered by FeedBurner

,

 

Copyright @ 2013 Electronic Circuit Diagrams & Schematics.

Designed by AS & AS