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Make this Simple 2 Tone Door Bell Circuit using IC 555

Last Updated on April 20, 2025 by Admin Leave a Comment

two tone door bell circuit compressed

Here we are making an electronic doorbell circuit that makes a dual-tone sound. So this thing is designed using the well-known IC 555. That IC 555 is something we see […]

Filed Under: Audio and Amplifier, Household Circuits Tagged With: 555, Bell, Door, Simple, Tone

Make this Two Tone Alarm Circuit using NAND Gates

Last Updated on April 20, 2025 by Admin

Now we talk about one idea which is that two tone alarm generator using frequency modulation method through IC 4011 NAND gates. So in this new concept we are going […]

Filed Under: DIY Projects Tagged With: Alarm, Gates, NAND, Tone, Two

Simple Dual Tone Siren Circuit

Last Updated on November 16, 2024 by Admin Leave a Comment

2 tone siren circuit

Here is a circuit diagram for a two-tone siren that produces a loud sound with varying frequency. You can use it with any power supply voltage, so it is suitable […]

Filed Under: Audio and Amplifier Tagged With: Dual, Simple, Siren, Tone

Variable Tone Generator Circuit using Magnet

Last Updated on December 21, 2020 by Admin 1 Comment

magnet oscillator compressed

Wondering how to build a tone generator circuit whose frequency could be changed or adjusted simply by moving a magnet near its sensor coil? This article will explain exactly how […]

Filed Under: Oscillators Tagged With: Generator, Magnet, Tone, Variable

Two Tone Alarm Circuit using Op-Amps

Last Updated on April 20, 2025 by Admin Leave a Comment

fig1 26

Sound alarm generators are essential in several applications, for example fire and burglar alarm techniques. This specific circuit creates a infiltrating two tone alarm signal possessing an output power of […]

Filed Under: Security and Alarm Circuit Tagged With: Alarm, Amps, Tone, Two

UM3561 IC Tone Generator Circuit

Last Updated on April 18, 2019 by Admin 3 Comments

UM music

The integrated circuit UM3561 is an excellent ROM (Read Only Memory) IC. The key feature of this chip is to create unique siren sounds such as Ambulance, Police, machine gun, […]

Filed Under: Audio and Amplifier Tagged With: Generator, Tone, UM3561

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