This is a simple temperature sensor circuit diagram using the LM335 temperature sensor and LM3914 IC. Here the complete temperature range becomes observable through an array of LEDs. The LM35 is an integrated circuit temperature sensor for sensing temperature on a degree Celsius scale. The LM3914 is…
Here we are going to discuss a simple timer IC 555 project. The 555 timer IC can be used as an audio amplifier with an astable multivibrator configuration. It functions to carry out pulse width modulation (PWM) of the audio signal. The Current(I) capacity of the 555 timer…
MOSFETs (Metal Oxide Semiconductor Field Effect Transistor) are of four different types or modes. They may be enhancement or depletion mode or maybe N channel or P channel. How does a MOSFET work? Here we provide a Java applet tutorial of N…
A summing amplifier or an adder is used to sum two signal voltages. A voltage adder circuit is a simple circuit that enables you to add several signals together. It has a wide variety of applications in electronic circuits. For…
Here circuitsgallery comes with the simplest mini audio amplifier circuit schematic using LM386 low voltage audio power amplifier IC. This circuit is applicable to power medium-sized speakers from a music player that can only drive earphones (lm386 headphone). The LM386 is a low voltage power amplifier…
You can easily plot different functions using MATLAB. To plot a 2D function in MATLAB you must first choose an independent variable. Let it be ‘x’. This variable will form an axis of the plot, more likely the horizontal or…
How to make a simple wire loop alarm? It’s just a matter of only four components. Namely, transistor, resistor, buzzer, and battery. Place this system as a front door alarm. And observe the magic when anyone opens the door. It…
PIR sensors are widely applied in wireless residential security systems, home alarms systems, and many more security circuits as motion detector sensors. A typical PIR sensor detects the infrared red (IR) waves from the human body. And, so, it is…
Here is an LPG gas leakage sensor alarm circuit that detects the outflow of LPG gas and alerts the user via audio and visual indications. The heart of this simple engineering project circuit is a gas sensor module SEN-1327. MQ-6…