Audio Jammer Noise generator

Often, there is a need for an additional telephone ringer in an adjoining room to be alerted about incoming calls. For instance, if the telephone is situated in the drawing room, an extra ringer may be required in the...

A simple function generator circuit utilizing the LM1458 is presented here. The LM1458 is a dual general-purpose operational amplifier. The two op-amps within the LM1458 share a common bias network and power supply line, yet operate independently. The function generator...

This resonance generator circuit, also known as an oscillating sound generator, is designed using the CMOS integrated circuit 4011 (Quad 2-Input NAND Gate). It consists of four NAND gates. Each oscillator circuit utilizes two gates. The circuit is capable...

The purpose of this circuit is to automatically turn off any device plugged into its power outlets after a certain period of time. Shutoff is activated by an absence of an audio signal or by a standard timer function....

Design and dimensioning of active low-pass and high-pass filters using Sallen-Key and multiple feedback topologies. Spice netlist generator. Active low-pass and high-pass filters are essential components in signal processing, allowing specific frequency ranges to pass while attenuating others. The Sallen-Key...

Creating a variable space in a small room can be enjoyable; however, designing an actuator to move a wall or room partition poses challenges. This can be achieved using an analog audio line delay. To implement a system that allows...