TTi has launched a new type of current probe which is capable of measuring currents in PCB tracks directly.

Calibrated measurement of current normally requires either the insertion of a shunt resistor, or for the conductor to be passed through a closed magnetic loop. Typically this is done using some form of split clamp device. Whereas this is suitable for individual wires, it is of no use for measuring current in PCB tracks.

The I-prober 520 current probe uses a patented technology to observe and measure current without the need to break or surround the conductor. By placing the insulated tip of the probe onto a PCB track, the current flowing in the track can be observed and measured. The current trace is made visuable on an oscilloscope.

The probe has a bandwidth of DC to 5MHz and a dynamic range of 10mA to 20A pk-pk. You can use the probe with any oscilloscope having a 1 MOhm input.
The I-prober 520 uses a patented miniaturised version of a fluxgate magnetometer, to measure the current. It is the patented miniaturisation that enables it to measure the field at a precise point in space. In addition, the miniature sensor has much lower noise and much wider bandwidth than a conventional fluxgate magnetometer.The I-prober 520 operates by sensing the field in very close proximity to the track. To achieve a calibrated measurement, the field sensor must be capable of maintaining a precise distance from the track. To achieve good sensitivity this distance must be very small because field reduces with the square of distance (to a first order approximation).Beside PCB tracks, the probe can of course also be used on component leads or any other current carrying conductor. An interesting example is ground planes where it can be used to observe circulating currents, interference injection points and hot spots in order to optimise design.The I-prober 520 is supplied with a control box and calibrator, power supply, and a clip on toroid assembly which can convert it into a closed loop current probe.For detailed information about the I-prober click here.


Arnold Memelink

Arnold Memelink


"The ABB Power Grids Jumet organisation is an innovative development and production facility of ABB that manufactures active filters and battery energy storage systems to support a stable grid. To test these systems we have acquired two Cinergia GE/EL +120kVA eplus units capable of doing grid emulation (AC + DC), operating as an electronic load (AC +DC) and being a battery emulator. We have experienced very good support from TTMS in obtaining these two Cinergia units. This included organising an on-site demonstration and supplying loan systems prior to the delivery of our final systems. This way we could start testing as early as possible. TTMS also organised training for the operators from the original manufacturer. This support allowed us to introduce the first battery energy storage systems even prior to the full delivery of the Cinergia systems."

University of Luxembourg

Sasan Rafii-Tabrizi

University of Luxembourg

“At the Energy and Environment department of the Faculty of Science, Technology and Medicine (FSTM) of the University of Luxembourg we do have different research projects related to green energy contributing to the development of eco-cities. As a long-standing partner of our research unit, TT&MS has proven that they are able to answer even the most complex questions in a professional manner. They have shown that they are always up to date with the latest technology and do not spare any effort to look at the application and even the situation on site. The exchange of ideas was always very pleasant and took place quickly. We look forward to further years of fruitful cooperation.”


© Copyright 2024 - TTMS B.V. | Privacy Policy | General terms of condition