LC meter 16x1 LCD Display

Posted on Feb 4, 2013

This is one of the most accurate and simplest LC inductance / capacitance Meters that one can find, yet one that you can easily build yourself. This LC Meter allows to measure incredibly small inductances starting from 10nH to 1000nH, 1uH to 1000uH, 1mH to 100mH and capacitance from 0.1pF up to 900nF. LC Meter`s circuit uses an auto ranging system so that way you do not need to spend time selecting ranges manually. Another neat function is the `Zero Out` switch that will reset the initial inductance / capacitance, making sure that the final readings of the LC Meter are as accurate as possible.

LC meter 16x1 LCD Display
Click here to download the full size of the above Circuit.

To be able to determine the value of an unknown inductor / capacitor we can use the frequency formula given below. Note that there are three variables that we can work with; f, L and C (f represents a frequency, L inductance and C capacitance). If we

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