Frequency and RPM Counter
Measuring frequency is one of the prime requirements for many applications. The most obvious method of measuring frequency is using CRO (or now a days using DSO). But this instrument is not handheld or available with all the students or hobbyists at any time. It is actually laboratory instrument and not the portable one. Also it is costlier. Also conventional CRO does not give the direct frequency value read out. One has to first set the waveform then find time/division and finely calculate time period and frequency. So it’s a long process that takes time. Another way is use frequency counter that will give us direct digital readout of frequency. In this no need of first adjusting the waveform into screen then find time / division and then calculate time period and frequency such as CRO. Just apply the signal input and get the read out of frequency. That’s why frequency counters finding their own place in measuring instruments.
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