List of DIY Electronics Engineering Projects

SIMPLE MULTITONE SIREN CIRCUIT


Devices such as Burglar alarms and sirens, whose basic purpose is to monitor certain conditions make enjoyable projects because of the variety of sounds they can generate. Here we are going to discuss a simple dual tone alarm/siren circuit using a dual op amp MC1458, audio amplifier LM380, and a 1-W speaker. The dual op amp is used as a signal generator that produces square, pulse and triangular or sawtooth waveforms.

CIRCUIT SCHEMATIC FOR DUAL TONE SIREN





WORKING PRINCIPLE

The IC MC1458 dual op amp, is capable of generating various wave forms. The 20K POT controls the frequency and type of output waveform it will generate. The switch sw connects the dual op amp to the audio amplifier LM380, which in turn drives the speaker.



Tittu Thomas

Author & Editor

I'm Tittu Thomas, An Electronics and Communication Engineer from India, Kerala. I love doing hobby electronics circuits, blogging, programming, etc. Started this blog while doing my B-Tech degree under CUSAT university.



1 comments so far:

  1. Nice article..
    Feel free to check out our interesting Android Blog
    http://mydigitallyf.blogspot.in/

    ReplyDelete

Social Time

Facebook
Like Us
Google Plus
Follow Us
Twitter
Follow Us
Pinterest
Follow Us

Subscribe to our newsletter

(Get fresh updates in your inbox. Unsubscribe at anytime)