Oscilloscope current loop: high bandwidth, strong shock resistance and accurate measurement

一、Product Overview

In difficult test scenarios such as power semiconductors, high-frequency switching power supplies, pulse discharges, and lightning surges, it is important to accurately capture rapidly changing AC and pulse current waveforms. ETA ETA ETA53100M AC oscilloscope current loop is the 1 high-performance passive through-core current sensor designed for high-frequency and high-current testing. With a response bandwidth of up to 20MHz and excellent performance that can withstand up to 5000A pulse peak current, it can safely convert the current signal in the high-frequency and high-voltage loop into a voltage signal without distortion, and output it directly to the oscilloscope for observation and analysis.

二、 Core Competitive Advantages and Highlights

1. 20 MHz Wide-band response for easy capture of transient waveforms

The highest frequency response range covers 10Hz-20MHz(-3 dB), which can faithfully restore the current rising edge, spike pulse and higher harmonics in the process of high frequency switching, and effectively avoid high frequency phase shift and waveform distortion.

2. Strong current measurement capability：100A rms / 5000A pulse peak

Continuous range: Supports continuous AC current measurement up to 100A rms.

Pulse peak value: transient pulse carrying capacity up to 5000A peak, easy to cope with capacitor discharge, lightning surge (ESD/Surge), IGBT/GaN switching loss and short circuit impact test.

3. 50mA high sensitive resolution, taking into account the small signal detection

The minimum resolution as low as 50mA makes it possible not only to measure strong pulse currents, but also to accurately distinguish high-frequency ripples and weak AC components in the background of the circuit.

4. ∅12.7mmLarge through hole diameter, high level electrical isolation

The non-contact through-core design is adopted, and the diameter of the perforation reaches ∅ 12.7mm, which can easily pass through large-sized insulated wires or high-voltage cables. Completely disconnect the direct connection between the measurement circuit and the test instrument to ensure the safety of the oscilloscope and personnel.

5. Standard BNC interface with visual indication of polarity

The base is equipped with standard BNC direct connection socket, which can directly establish connection with oscilloscopes of various mainstream brands. The ring body is clearly printed with the forward output arrow of electronic flow direction, effectively eliminating the problem of reverse polarity connection of wiring.

三、 Typical Application Scenarios

Power semiconductor and drive test: high frequency switching current and conduction loss test of wide band gap semiconductor devices such as SiC/GaN.

Power Supply and Inverter R&D: Switch-mode power supplies (SMPS), inverters, high-frequency transformers, and inductor current ripple analysis.

Pulsed power and discharge systems: plasma physics research, laser drivers, capacitive discharge and high-energy pulse measurements.

Electromagnetic compatibility (EMC/ESD) testing: lightning surge impulse testing, electrostatic discharge transient current and conducted interference monitoring.

Industrial motor and electric welding equipment: high frequency spot welding machine, induction heating equipment pulse current detection.

四、Precautions for Use

Wire insulation: the conductor under test must be insulated wire, do not directly into the uninsulated high voltage bare conductor.

Current direction: Please refer to the arrow on the surface of the current loop to indicate the direction of penetration of the wire to ensure that the oscilloscope displays the correct polarity of the waveform.

Matching impedance: It is recommended to set the input impedance of the oscilloscope to 1MΩ (or configure 50Ω terminal matching according to the requirements of the instructions) to obtain the most accurate variable ratio output.