What is Schmitt Trigger Circuit, Definitions, Pros & Cons

Authored By: Ankita Prajapati

A Schmitt trigger circuit is an analog circuit composed of two transistors connected in a positive feedback loop. It is commonly used to convert a slowly changing input signal into a more rapidly changing output signal, making it an essential part of many digital logic circuits.

The Schmitt trigger circuit is named after its inventor, the American physicist Dr. Otto H. Schmitt, who first described it in 1934.

The Schmitt trigger circuit is sometimes referred to as a regenerative comparator, because of its ability to regenerate or amplify a weak input signal.

This is accomplished by using two transistors, connected in a positive feedback loop, which amplifies the input signal.

The input signal is applied to the base of the first transistor, which then amplifies the signal and applies it to the base of the second transistor.

The second transistor then amplifies the signal even further, and the output is taken from the collector of the second transistor.

The Schmitt trigger circuit is very useful in digital logic circuits, because it can convert a slowly changing input signal into a rapidly changing output signal.

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This makes it ideal for use in circuits such as edge detection, pulsewidth modulation, and frequency division.

It is also used in converters, power supplies, and control systems. The Schmitt trigger circuit is a versatile and cost-effective analog circuit that is used in a wide variety of applications.

Its ability to convert a slowly changing input signal into a rapidly changing output signal makes it an essential part of many digital logic circuits.

It is also widely used in converters, power supplies, and control systems.

Advantages

The advantages of the Schmitt trigger circuit include its versatility, costeffectiveness, and its ability to amplify a weak input signal.

Disadvantages

The disadvantages include the potential for oscillations and the need for precise component values to ensure proper operation.

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Conclusion

The Schmitt trigger circuit is an analog circuit composed of two transistors connected in a positive feedback loop. It is commonly used to convert a slowly changing input signal into a more rapidly changing output signal, making it an essential part of many digital logic circuits. It is also widely used in converters, power supplies, and control systems.

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