The difference between high frequency current probe and flexible current probe

There are significant differences between high-frequency current probe and flexible current probe in many aspects, which are mainly reflected in the working principle, measurement characteristics, application occasions and structural characteristics.

Working principle

high frequency current probe:

The main use of SMT large-scale integrated circuits, solid and reliable structure. Using the principle of electromagnetic induction, the magnetoelectric sensor is used for detection. For the high frequency part, a Hall sensor may also be combined for signal acquisition to cover the entire frequency band. The high-frequency current probe can capture high-frequency current waveforms accurately and quickly, and has the characteristics of high bandwidth and low current.

flexible current probe:

Flexible current probes usually work based on the Hall effect principle, using Hall sensors to measure the magnetic field around the wire, and then calculate the current flowing through the wire. The flexible design allows it to easily wrap around or attach to wires of different shapes and sizes, and measurements can be made without breaking the circuit.

Measurement characteristics

high frequency current probe:

It is mainly used to measure signals with frequencies above 20K, and has the characteristics of high bandwidth and high precision (accuracy can reach more than 1%). It can accurately reflect the details of high-frequency signal changes, and is suitable for switching power supply design, motor drive debugging and other occasions requiring high frequency. Some high-frequency current probes also have automatic degaussing and zero adjustment functions, sound and light overcurrent alarm functions, etc., which improve the convenience and safety of use.

flexible current probe:

Mainly used to measure AC or DC current, the current range can reach thousands of A. The flexible design allows it to adapt to a variety of measurement environments, including hard-to-reach or space-constrained areas. Some flexible current probes also have high bandwidth characteristics and are able to measure high frequency signals, but they are generally less focused on high frequency measurements than high frequency current probes.

Application occasions

high frequency current probe:

More suitable for the need to measure high-frequency current signal occasions, such as switching power supply, motor drive, high-speed digital circuit.

flexible current probe:

Because of its non-intrusiveness and flexibility, it is more suitable for current measurement in the fields of electrical system maintenance, industrial automation, automotive diagnosis, aerospace and medical equipment.

Structural features

high frequency current probe:

The structure is firm and reliable, not easy to damage, suitable for use in harsh environments. Usually has a standard BNC output interface, can be matched with a variety of oscilloscope and other measurement equipment.

flexible current probe:

Made of flexible materials, such as flexible cables or flexible plastics, making it easy to adapt to various measurement environments. Provide a variety of connection options, such as BNC, banana socket or direct cable connection, which is convenient for users to choose according to actual needs.