High blood cholesterol levels can cause hardening of the arteries at a younger age. For many people, high cholesterol levels are the result of an unhealthy lifestyle -- most commonly, eating a diet that is high in fat. Other risk factors are heavy alcohol use, lack of exercise, and being overweight.
Freebase(0.00 / 0 votes)Rate this definition: Comparator. In electronics, a comparator is a device that compares two voltages or currents and switches its output to indicate which is larger. They are commonly used in devices such as analog-to-digital converters.
When there is a need for a comparator circuit, it is always best to opt for a specific comparator chip as the basis of the circuit. Comparator chips are much better at handling switching between two values and may often have output stages that can more easily interface with logic than analogue operational amplifiers.omparator circuits find a number of applications in electronics. Effectively a comparator compares two voltages and switches its output accordingly. Comparators are used in many areas of electronics where levels need to be detected and in many cases op-amps used as comparators can be seen in many circuits.