200K views · 2K reactions | A Schmitt Trigger is a comparator circuit with hysteresis. It converts noisy or slowly changing input signals into clean digital outputs by introducing two threshold levels — one for rising and one for falling edges. This prevents false triggering from small fluctuations and ensures stable switching. #ElectronicsEducation #electronicsrd | Electronics Education | Facebook

This simulation compares an op-amp used as a linear amplifier versus used as a comparator. The violet trace at the top is the 1 kHz input sine; the green trace shows the amplifier output which follows the input smoothly with gain and remains within the op-amp’s linear region thanks to negative feedback — you can see a larger amplitude sinusoid with low distortion and Vpp ≈ 10V. The red trace is the comparator output: instead of a scaled sine it snaps between ±supply rails, producing a clean squa

This simulation highlights the difference between an amplifier and a comparator, emphasizing the feedback mechanism in op-amp operation. The amplifier circuit uses negative feedback, which stabilizes gain and ensures the output is a smooth, amplified version of the input signal. This feedback forces the op-amp to work linearly, keeping the voltage difference between inputs nearly zero. The comparator, however, operates without feedback, driving the output to either saturation level depending on