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 […]
Make this Two Tone Alarm Circuit using NAND Gates
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 […]
Simple Dual 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 […]
Variable Tone Generator Circuit using Magnet
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 […]
Two Tone Alarm Circuit using Op-Amps
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 […]
UM3561 IC Tone Generator Circuit
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, […]