Application Cases

Experiment Title: Application of High-Voltage Amplifier in Pulsed Magnetic Field Analysis of Energized Hollow Coil

Experiment Equipment: Arbitrary waveform generator, high-voltage power amplifier (ATA-4014), current-limiting resistor, Hall-effect gaussmeter, enameled wire coil, oscilloscope

Experiment Content: This study analyzes the pulsed magnetic field inside an energized hollow coil. It first examines the magnetic field at the midpoint of the coil's central axis under single-frequency pulse signal excitation. Then, it investigates the variation of the magnetic field at the same point under frequency-modulated pulse signals. The self - developed measurement device is used to measure the coil's magnetic field and compare the results with simulation predictions.

Experiment Process: The arbitrary waveform generator combined with the high-voltage amplifier can produce two types of excitation signals matching those in the simulation model. These signals are applied to a circuit consisting of the coil and a current-limiting resistor in series. During measurement, the gaussmeter probe is inserted to the midpoint of the coil's central axis to record the magnetic field changes there. The magnetic induction intensity under single-frequency pulse excitation is measured, and data is collected via an oscilloscope.

Experiment Results:

1. The effect of excitation signal frequency on the coil's magnetic induction intensity.

   
   

2. The effect of coil outer diameter on magnetic induction intensity.

   
   

3. The magnetic induction waveform of the coil.

   
   

Experiment Conclusion: Under single-frequency pulse excitation, the magnetic induction intensity from simulations aligns with experimental measurements across different signal frequencies and coil outer diameters. Both show similar trends to theoretical expectations. This simulation method effectively analyzes the internal magnetic field of energized hollow coils, offering valuable guidance for studying the optimal conditions and mechanisms of pulsed magnetic fields.

ATA-4014C High-Voltage Amplifier Specifications: