ArticleHardwareX2026
Low-cost programmable sine wave driver for inductive loads with built-in current sensing.
Article in HardwareX, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
3 authors.
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Abstract
This paper presents the design and implementation of a compact and versatile device for generating and amplifying sinusoidal waveforms to drive inductive loads. The system is built around the AD9833 programmable waveform generator and the OPA548 high-current operational amplifier, forming a flexible platform capable of producing high-power sine wave excitation signals. The device can operate in two modes: internal signal generation using the AD9833 direct digital synthesis (DDS) module, or external signal input from a laboratory function generator, providing increased adaptability for various applications. To enable real-time monitoring and protection, an ACS724LLCTR-2P5AB-S Hall-effect current sensor is integrated into the output stage for accurate measurement of load current. The proposed design offers a cost-effective solution for applications requiring controlled excitation of inductive elements such as coils, transformers, or electromagnetic actuators. Experimental testing confirms the ability of the system to deliver stable amplified sine waves with reliable current sensing, making it suitable for laboratory experimentation, educational purposes, and small-scale industrial testing environments.
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