What is a Frequency counter?

A frequency counter is a digital device for measuring the frequency generated in an electronic circuit. An electrical signal can be represented by three parameters: frequency, amplitude, and phase. Frequency measurement is an important parameter in the basic measurement of electrical signals, as the period can be determined by the reciprocal of the frequency. A universal counter is a frequency counter with multiple functions such as duty cycle measurement, pulse rise time, and time interval.

Application of Frequency counter

Frequency counters are used as basic measuring instruments in electrical signal measurement, such as ammeters and voltmeters. There are products with a single frequency counter, but many products with a function as a frequency counter have been developed as part of the functions of devices with many functions such as digital multimeters, oscilloscopes, and optical spectrum analyzers. The frequency counter is characterized by a very simple principle. For this reason, it is possible to make your own, so kits etc. are also sold. Frequency counter kits are sold by various companies if they are several tens of MHz. The reason is that the direct frequency counter does not operate in a complicated manner. In addition, some multi-testers are equipped with a range that can measure frequency. These types are useful because they are easy to handle. However, while it has the advantage of being easy, it is not suitable for applications such as taking high frequencies and many significant figures. It is necessary to understand and use this disadvantage. Most of the kits are made into LSI. Because of this, you can't learn all of the structure, but you can feel the mood.

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