A Schmitt Trigger is a comparator circuit with hysteresis, meaning it has two different threshold voltages for rising and falling signals. It converts a noisy or slowly varying input into a clean digital output, making it ideal for signal conditioning and waveform shaping. Schmitt Triggers are commonly used in debounce circuits, oscillators, and digital signal restoration. #schmitttrigger #electronics #electronicsrd #ElectronicsEducation Analog Devices, Inc. https://youtube.com/@electronicseduca

AC Mains Voltage Indicator The circuit basically comprises three LM339 comparators (IC1, IC2 and IC3) and a 12V regulator (IC4). It is powered by regulated 12V DC. For power supply, mains 230V AC is stepped down to 15V AC by step-down transformer X1, rectified by a bridge rectifier comprising diodes D1 through D4, filtered by capacitor C4 and regulated by IC4. The input voltage of the regulator is also fed to the inverting inputs of gates N1 through N12 for controlling the level of the AC. The L

This simulation demonstrates the difference between an amplifier and a comparator using an operational amplifier. In the amplifier configuration, the feedback resistor is connected to the inverting input, providing negative feedback, which stabilizes the circuit and ensures the op-amp produces a faithful, linear amplified version of the input signal without distortion. The output waveform (green) clearly shows the sinusoidal input signal amplified in proportion to the gain set by the resistor ra