Why we use Schmitt Trigger?
A Schmitt Trigger resembles a modern switch for electrical signals. Let’s discuss one condition, i.e., imagine that you have a light that you want to turn on when it’s dark and turn off when it’s bright in a room. A modern switch could turn on and off rapidly when the room light is at the limit of dimness or brightness. This would lead to the flickering of the light.
Presently, you can change that normal switch with a Schmitt Trigger. Thus, it won’t flicker the light anywhere when the lightning is close to the threshold. This process holds until the room is recognizably dull before turning on the light and holds on until it’s lightening in the room before switching it off.
Hence we use Schmitt Trigger to prevent the switch from debouncing, providing noise immune output by using hysteresis. It helps in removing noise from the signal. Due to these advantages, we use Schmitt Trigger as a modern switch.
Schmitt Trigger
We use Schmitt Triggers in digital electronics. It is used for rejecting the noise from the input signals by using the hysteresis curve. To provide accurate and more stable results, it uses two threshold voltages i.e., upper threshold voltage (VUT) and lower threshold voltage (VLT). It is mainly used in signal conditioning applications to remove noise from signals which is used in digital circuits, particularly mechanical contact bounce in switches. In this article, we will learn more about Schmitt Trigger, its working, and its applications.
Table of Content
- What is Schmitt Trigger?
- Working
- Transfer Characteristics
- Types
- Uses
- Schmitt Trigger Vs Comparator
- Advantages and Disadvantages
- Applications