# Circuit Simulator - Schmitt Trigger (with op-amps)

## Where can I get Schmitt Trigger (with op-amps) Circuit Diagram with Explanation?

IndiaBIX provides you lots of fully solved Schmitt Trigger (with op-amps) circuit diagram with detailed explanation and working principles.

## How to design a Schmitt Trigger (with op-amps) (electronic circuit)?

You can easily design the Schmitt Trigger (with op-amps) circuit by practicing the exercises given below. Here you can design and simulate your own electronic circuits with this Online Circuit Designer and Simulator.

### Circuit Description:

This circuit is a Schmitt Trigger, a type of comparator. It measures the input to see if it is above or below a certain threshold. The threshold varies to make it less likely that the output will switch rapidly back and forth due to a noisy input near the threshold.

The input is a noisy 40 Hz sine wave, shown in the first scope. The threshold is shown in the second scope. The third scope is a graph of the output versus input. Note that the threshold goes down whenever the input rises above it, and vice versa.

The two 10k resistors form a voltage divider that put the threshold voltage (the + input of the op-amp) at 5 V. But, the output of the op-amp is also connected to the threshold input through a 100k resistor. This causes the threshold to be raised or lowered slightly depending on the op-amp output. -- Credits: Mr. Paul Falstad.