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Adjustable Noise Generator Circuit

Last Updated on May 20, 2020 by Admin Leave a Comment

This simple IC 555 based circuit can be used to generate many different noises whose pitch and modulation can be adjusted as per user preference.

Numerous achievable applications for noise generating circuits is completely incredible - quite a few to be listed in the accessible space.

This is specifically correct of the unit explained in this article. However is not precisely unique in idea, the can has the ability of producing a din which will most definitely abandon your ears tingling for a long time.

555 noise generator circuit

The circuit includes hardly any components which collectively form a 'Kojak ' type siren. Almost all of the job is performed by two (555) timer ICs.

How the Circuit Works

The first (IC1) produces an audible tone whose frequency are adjustable through potentiometer P1.

The output of this timer is fed straight to a loudspeaker. The loudspeaker on the other hand will not give off a constant tone, as IC1 is modulated by a low frequency sawtooth waveform produced by IC2.

The frequency of the sawtooth is usually governed through potentiomcier P2. Due to this fact, the entire circuit produces a frequency modulated signal which appears to be similar to a siren.

The pitch are adjustable with P1 and the modulation rate with P2.

The adjustable noise generator circuit is streamlined enough to be mounted in a can together with the batteries and loudspeaker and can be applied pretty effectively on children' s cycles, skate boards etc. or as an 'anti-attack' alarm.

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About Admin

Hey friends, Thanks a bunch for stopping by this site! I am an engineer with a Bachelor of Engineering in Electronics and Telecommunication. One of my passions is gathering information from all sorts of electronics books and tutorials. I then take that information and compile it into a language that is super easy to understand. My goal is to make those complex electronics circuit concepts and technical terms much more accessible for all the new and budding electronics engineers out there. I can also design customized circuit diagrams as required by the users.
If you have any questions related to this field, please do not hesitate to drop a comment! I am always here and ready to help you out with any queries you might have. I cannot wait to hear from you!

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