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Resonant inductance meter "nano-H" is a measuring instrument designed especially for measuring very small inductances. The general idea of measurement is based on the change of the resonant frequency by the element (coil) being tested.

The main purpose of the device development was the ability to  measure  very  small  inductances,  including less than 5 nH. The instrument can measure inductances with an absolute error not exceeding 0.2nH. The meter provides full accuracy after calibrating by the user.

The device has been designed for electronics who design or repair high frequency electronic devices.

nano-H - a  meter for very small inductances

           

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The zero calibration is necessary to obtain full instrument accuracy. It is made with a special element - a jumper provided by the manufacturer.

Measuring range 1

0nH .. 20µH

Frequency of measurement: 1 .. 6MHz.

Absolute error: no more than 0.2 nH (after heating and calibrating by the user)

Absolute error without user calibration: no more than 3nH.

Relative error of measurement for the 100 nH standard: not more than 0.5%

 

Measuring range 2

15µH..500µH

Frequency of measurement: 60kHz .. 300kHz

Absolute error: no more than 15nH

Relative error of measurement for the 10μH standard: not more than 0.5%

Relative error of measurement for 220μH standard: not more than 0.5%

Relative error of measurement over the entire 1μH..200μH range: no more than 1.5%

 

Heating: no more than 30min

Unique measuring connector

 

We equipped the meter with a unique measuring connector, specially designed to measure coils in SMD enclosures and typical air coils.
In contrast to the measuring handles used in typical LCR bridges (terminal with spring clamps), our connector allows you to take measurements much faster and more conveniently.
The SMD element is inserted into the slot between the contact bars so that the element will wedge between the bars. This operation takes several seconds and does not require as much attention as with classic terminals.

The contact elements of the connector are gold-plated, which makes it possible to use the connector for a long time, without worrying about contact deterioration.
However, it should be remembered that the connector must be cleaned from time to time, as the measured elements may leave deposits on the contacts.
In turn, wire coils (typical silver-plated wire) can be measured by inserting the ends of the coil into a pair of openings of both contact bars.
The special design of the openings causes that the coil leads slightly wedge in the holes, which ensures good electrical contact. The pins are also wedged when the diameter of the wire is smaller than the diameter of the hole - eg if the ends of the coil are from 0.5mm wire and they are inserted into the 0.8mm holes, the contact will be correct.
Unfortunately, the above method can not be used to measure a coil of very thick wire (over 1mm) and those with soft leads. In this case, use the alligator clips. Miniature banana sockets (2mm standard) placed in contact bars serve this purpose.

NOTE: some SMD coils have "skids" type contacts, i.e. their electrical contacts are only accessible from the bottom of the element.
Such coils can not be measured by typical wedging in the socket.
The measurement of such elements consists in placing in the space between contact bars, but without wedging.
To ensure contact of the element with the lower contact surfaces, press the measured coil from the top. 

Calibration of inductance measurement with a special component

 Calibration of inductance   measurement with

 a special component

 Inductance measurements

The meter has very high sensitivity. That's why it's worth paying attention to details that would normally be left out. Here, even 1 mm of cable is important! This 1mm is for a typical wire about 1nH. Therefore, the measurement result is influenced, for example, by the depth of insertion of the leads into the connector. 

 

 Other features

 Summary

 

  • Multi-point calibration.

  • Calibration (zeroing) for several different cases of SMD components.

  • Two measurement ranges and auto mode - automatic range change.

We have the prototype! Everything works correctly! The series-produced device will be just like that.

We are currently preparing production of the meter.

Analogue electronics. Think different.

To top

Resonant inductance meter "nano-H" is a measuring instrument designed especially for measuring very small inductances. The general idea of measurement is based on the change of the resonant frequency by the element (coil) being tested.

The main purpose of the device development was the ability to  measure  very  small  inductances,  including less than 5 nH. The instrument can measure inductances with an absolute error not exceeding 0.2nH. The meter provides full accuracy after calibrating by the user.

The device has been designed for electronics who design or repair high frequency electronic devices.

Analogue electronics.

Think different.

Analogue electronics.

Think different.

The meter has very high sensitivity. That's why it's worth paying attention to details that would normally be left out. Here, even 1 mm of cable is important! This 1mm is for a typical wire about 1nH. Therefore, the measurement result is influenced, for example, by the depth of insertion of the leads into the connector.

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You can measure

even 1 nH !!!

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