Introduction: Sound sensor switch circuits can be used as a module for any system that might be assigned to trigger by detecting some kind of sound pressure level or simply applications such as a voice-activated alarm security … Read more
LM358 Circuits
Welcome to our comprehensive collection of LM358 circuits, designed to enhance your electronic projects with precision and versatility. Whether you’re a hobbyist, student, or professional, our range of circuits offers reliable solutions using the LM358 operational amplifier. Discover circuit designs for amplifiers, comparators, filters, and more, leveraging the LM358’s dual operational amplifier configuration, low input offset voltage, and wide supply voltage range. Our detailed guides, tutorials, and circuit diagrams provide step-by-step instructions, troubleshooting tips, and creative ideas for incorporating LM358 circuits into your designs. Unlock the full potential of this versatile op-amp and elevate your electronics projects with our curated selection of high-quality LM358 circuit.
What is a Fire Alarm? A Fire alarm is a simple electronic circuit that determines the presence of any hazardous fire in its vicinity & triggers an array of preventive measures such as overhead sprinklers … Read more
Fire Alarm Circuit Using a Thermistor & LM358 Op-Amp IC
The temperature sensor switch is built across the two ICs LM35 and LM358. The relay in the circuit activates any electronic circuit connected to it when LM35 senses the desired temperature level. Furthermore, the circuit … Read more
LM35 Temperature Sensor Switch with IC LM358
Introduction Many times you may have seen that LEDs are getting used for the decoration purpose of different events. LED lights, LED lamps, and LED strips are widely utilized. Hence, they can be designed in … Read more
Lamp Pulse Circuit LM358
Introduction To restrict the use of cell phones at serious places like examination rooms, prayer rooms, etc, the administrator of that place can use this device, called a cell phone call detector. It enables to … Read more
LM358 Mobile Phone Detector Circuit
In this tutorial, we will make a “Mobile Phone Detector Circuit”. A mobile phone detector device can identify the existence of an activated cell phone nearby and give an indication of an activated cell phone … Read more
Mobile Phone Detector Circuit

Depending on the circuit, the frequency and amplitude can differ. Many kinds of waveforms are observed, such as sine waves, triangular waves, square waves, ramps, sawteeth, etc. The sine wave and square wave generator circuits … Read more
Sawtooth Waveform Generator Circuit
What is a Cell Phone Detector? A Cell phone detector basically senses the presence of any cellular device within its vicinity & provides a relevant indication. It can also be considered as a frequency detector … Read more
How To Make A Cell Phone Detector using LM358 Op-Amp IC
In this tutorial, we are going to make a “Lamp Pulser Circuit”. This is a simple circuit that can be used to pulse an LED or a low-power filament lamp. As LEDs are used for … Read more
Lamp Pulser Circuit using LM358
Much of the power supply in the present day is quite reliable because of technical advances and better design preferences due to defective manufacturing or the main switching transistor or the MOSFET going bad. It … Read more
230V AC Mains Over Voltage Protection Circuit
So we will learn in this project how to create a constant current sink circuit regulated by voltage. A constant current sink device regulated by Voltage, as the name implies, regulates the voltage of the … Read more
Design a Simple Constant Current Sink Circuit using Op-Amp
In several sectors of the construction industry, airflow monitoring is useful. In this tutorial, we create a very straightforward circuit for the existence of an airflow “simple air flow detector circuit.” No sophisticated stuff such … Read more
Simple Air Flow Detector Circuit
In this DIY, we are demonstrating a project of an overcurrent protection circuit. In the power supply circuits, overcurrent safety is also used to reduce a PSU’s output power. When the load draws a large … Read more
Overcurrent Protection using LM358
Today, in the tutorial, we will establish an IR Based Security Alarm. The IR defense alarm circuit can detect and stimulate any progression. Warning device. This circuit is advantageous in apartments, financial institutions, stores, and … Read more
IR Infrared Based Security Alarm Project
This tutorial will construct a Voice Modulated signal circuit with a self-designed PCB in this construction process. We have designed a PCB using the online PCB prototype & designer EASYEDA in this construction process. It’s … Read more
How to Design a Printed Circuit Board – Voice Modulator Circuit
Operational amplifiers have so many exciting apps, and we have created many circuits with op-amps. Operational amp. In this article, we will study one other Op-amp application, adding two or more input voltages, and the … Read more