## 1 Introduction  
With growing momentum toward full electrification, induction heating presents distinct advantages over traditional methods, excelling in precision, speed, and overall performance. Induction heating (IH) stands as an ideal solution across various applications and industries, from medical devices to diverse hardening and manufacturing processes [1]. Household induction cookers offer a safer, swirter, and more adaptable cooking experience with minimal emissions and independence from natural fuels. It is conceivable that forthcoming government regulations may position domestic induction heating as the preferred solution in the near-future market [2; 3]. Recent advancements in modern induction cookers have prioritized safety, user-friendliness, enhanced energy conversion efficiency, and improved power factors. Flexible induction stoves, incorporating arrays of coils, allow users to place cookware anywhere on the surface without concern for positioning [4; 5]. Innovative inverter designs employing Zero-Current Switching (ZCS) and Zero-Voltage Switching (ZVS) methods have shown cost and complexity reductions through multi-coil architectures [6]. Further coil reduction strategies, such as the partial overlap proposed by [6], inspired by wireless power transfer gadgets and improved through research on unequal gaps between coils [2], offer promising enhancements. A novel GaN-HEMT-based inverter introduced in [7] addresses noise and magnetic decoupling issues. Additionally, Power Factor Correction (PFC) rectifiers [8] promise increased efficiency, reduced fabrication costs, and mitigated Electromagnetic Compatibility (EMC) challenges. Enhanced load detection and management solutions, like the one proposed in [9], minimize the need for additional sensors, optimizing power transfer by recognizing pot characteristics. Ref. [3] presents a sensorless safety solution leveraging load material property variations due to temperature changes. Moreover, advancements in cookware design, exemplified by [10], result in improved temperature distribution across loads. This paper focuses on recent advancements in induction heating systems and quasi-resonant inverters, particularly in induction cooktop designs [11]. Recent innovations have centered on efficiency optimization through improved coil designs, advanced heating materials, and optimized switching frequencies, significantly reducing energy losses. Electromagnetic Compatibility (EMC) remains crucial, with new shielding techniques, active filters, and modulation schemes addressing electromagnetic interference while maintaining performance standards [12; 13; 14]. Advanced inverter technologies have seen developments in Zero-Voltage Switching (ZVS) techniques to minimize switching losses, as well as modular multi-level inverter topologies that offer scalability and enhanced power control [15; 16]. Additionally, load sensing technologies have emerged, featuring adaptive control algorithms that adjust power output based on load characteristics, thus improving cooking precision and energy efficiency [16]. Noteworthy studies have highlighted dynamic frequency modulation for better load matching and intelligent induction cookers that detect pot sizes and materials, further optimizing heating processes [17]. This paper aims to furnish a practical guide for designing a cost-effective induction burner using quasi-inverter technology, offering insights into circuit design and manufacturing processes. Section 2 introduces fundamental IH principles, followed by an exploration of quasi-resonance inverter workings. Subsequently, limitations and power potential are discussed. Section 3 delves into the key electrical components of an induction cooker, including the inverter circuit and spiral coil. Required peripheral circuits for reliable operation, alongside the microcontroller unit (MCU), are detailed in Section 4. Section 5 addresses safety measures, hard-switching avoidance, and power output control procedures.