✔ Inductance Meter Adapter Circuit

Inductance Meter Adapter Circuit

- July 17, 2017

Lc meter can measure inductances starting from 10nh 1000nh 1uh 1000uh 1mh 100mh and capacitances from 01pf up to 900nf. An inductance meter adapter circuit would be helpful since you can measure inductance using your general purpose digital voltmeter dvm.

Arduino Digital Multimeter Oscilloscope N E C O

Rf Inductance Meter

Www Doc Diy Net Simple Inductance Meter

The inductance meter adapter output is connected to a frequency meter and the inductance is calculated from the frequencyhence you need a frequency meter and some calculation to get your inductor value.

Inductance meter adapter circuit. The circuit includes an auto ranging as well as reset switch and produces very accurate and stable readings. Circuit a typical inductance meter is nothing but a wide range lc oscillator. This circuit cost much cheaper compared to already made inductance meter instrument.

Inductance and capacitance meter adapter for dvm this device is an addon to a digital or analog voltmeter. The proposed inductance meter circuit can measure inductance or coil values accurately over the given ranges and as a bonus the circuit is also capable of measuring the complementary capacitor values as accurately. Inductance meter is very helpful in designing switch mode power supply since its often needed to wind the coil by hand and measure the inductance fro trial and error to get the required value.

How the circuit works. When measuring an inductor the added inductance changes the oscillators output frequency. Furthermore the circuit can be powered up with a single 15v cell.

For those of us without an actual inductance meter this project is an easy to build way to use an ordinary multimeter digital or analog to measure the inductance of coils from about 3 microhenries to 7 millihenries with an accuracy of about 10 plenty close enough for most diy projects. However a frequency meter would be required to work out the inductance. 10k potentiometer is used to control the brightness of lcd.

The device can measure inductance in the 100mh1h range capacitance in the 100pf to 1mf range and it also produces a set of frequencies 100 hz 1 khz 10 khz 100 khz 1 mhz. This circuit uses lc circuit which consists of an inductor and a capacitor. Lcd 1602 is used to display inductance or capacitance of lc circuit frequency.

And by calculating this frequency change we can deduce the inductance depending on the measurement. This inductance meter is actually an adapter to your digital voltmeter dvm. Using this circuit now your voltmeter is capable of measuring inductor value.

The circuit uses the 5v power supply of arduino and can also use usb or 12v adapter to power arduino. The op of the circuit is a ttl square wave whose frequency relates to the inductance being measured. Simple 15 v inductance meter circuit here a simplest yet quite accurate inductance meter is presented which can be built within few minutes.