What is a comparator used for?

What is a comparator used for?

A comparator circuit compares two voltages and outputs either a 1 (the voltage at the plus side) or a 0 (the voltage at the negative side) to indicate which is larger. Comparators are often used, for example, to check whether an input has reached some predetermined value.

What is LM IC?

The LM series originated with integrated circuits made by National Semiconductor. The prefix LM stands for linear monolithic, referring to the analog components integrated onto a single piece of silicon.

How do op-amp comparators work?

The open-loop op-amp comparator is an analogue circuit that operates in its non-linear region as changes in the two analogue inputs, V+ and V- causes it to behave like a digital bistable device as triggering causes it to have two possible output states, +Vcc or -Vcc.

What are the types of comparators?

Types of Comparators

  • Mechanical Comparator.
  • Mechanical-Optical Comparator.
  • Reed Type Comparator.
  • Electrical-Electronic Comparator.
  • Pneumatic Comparator.

What is lm lm 35?

Prefix LM stands for linear monolithic.

What is LM35 stands for?

LM35 is a temperature sensor that outputs an analog signal which is proportional to the instantaneous temperature. The output voltage can easily be interpreted to obtain a temperature reading in Celsius. The advantage of lm35 over thermistor is it does not require any external calibration.

What are the advantages of comparators?

Advantages of Electrical Comparator: Vibrations are reduced due to least weight of mechanical. It consists of less moving parts. By AC supply the friction errors are reduced. For measuring units the indicating instrument can be held at remote locations.

What is a zero crossing detector?

A zero crossing detector (ZCD) can be built using a 741 operational amplifier IC. One input must be set to zero for the reference voltage, while a sine wave voltage is applied to the other input. When the input sine wave passes through zero in a negative direction, the output voltage is driven into positive saturation.