XL4015 5A Constant Current/Voltage LED Drives Lithium Battery Charging Module This versatile Buck converter serves as a standard step-down module equipped with overcurrent protection for a variety of applications. It functions as a charging device for lithium, nickel-cadmium, and nickel-hydrogen batteries, as well as battery packs, solar panels, wind turbines, and as a high-power LED driver module. The buck converter offers two modes, constant voltage and constant current, with corresponding indicators to display the current mode. In lithium battery charging mode, the float voltage and charge current can be adjusted to indicate charging or full charge status. Additionally, the module features current limiting protection, ensuring that it will not suffer damage in the event of a short circuit. This linear module has constant voltage and constant current function (CC CV). and it has a good performance. When you use it as a charger. this module use good chip as core and it is stable. also its ripple is low to 50mV. Features Short circuit protection: Yes(limited current 8A) Over-temperature protection: Yes (automatically turn off the output after over temperature) Input reverse connection protection: None, (If necessary, please input a large current diode in the input string) Installation method: 4 3mm silk Wiring method: terminal block or soldering terminal, V-IN is input. Applications: LCD Monitor and LCD TV Portable instrument power supply Telecom / Networking Equipment

XL4015 5A Step Down Adjustable Power Supply with LED Voltmeter The XL4015 5A Step Down Adjustable Power Supply with LED Voltmeter is a high-efficiency DC-DC buck converter module designed to reduce higher DC voltages to a stable and adjustable lower output. Powered by the XL4015 controller IC, this module supports an input voltage range of 4V to 38V and provides an adjustable output from 1.25V to 36V with a maximum current of 5A. The built-in LED voltmeter allows real-time monitoring of output voltage, making it easy to set precise levels for different applications. With up to 96% conversion efficiency and integrated protection features, this power supply is ideal for powering microcontrollers, sensors, motors, battery systems, and various embedded or DIY electronic projects where reliable voltage regulation is essential. Voltmeter calibration method : The onboard voltmeter indicates that to adjust the output voltage, one must long press the right button for 2 seconds to release it. At this point, the voltmeter and the output voltage indicator light [OUT] will flash synchronously, indicating entry into the output voltage regulation mode. Similarly, when the input voltage is displayed on the voltmeter, a long press of the right button for 2 seconds will also release it, causing the voltmeter and the input voltage indicator light [IN] to flash synchronously, thus entering the input voltage adjustment mode. A light touch on the button located on the right side will increase the voltage value by one unit; conversely, pressing the left button will decrease it by one unit. Since a single unit of voltage is less than 0.1 V, it is necessary to press the button consecutively 1-5 times to observe a change of 0.1 V on the voltmeter. The exact number of consecutive presses required will depend on the current displayed voltage; generally, as the voltage increases, fewer presses will be needed. After completing the voltage adjustment, one should long press the right button for 2 seconds and then release it to exit the output voltage calibration mode, at which point all parameters will be automatically saved and the device will power down to conserve energy. Features Better than 2596, easy to 4A 50W, up to 75W adding the heat sink. Power indicator: Yes. Short circuit protection: Yes (limit current 8A). Over-temperature protection: Yes (shutdown output automatically after over temperature). Input Reverse Polarity Protection: None (cascade high current diode if required). Wiring: IN+/- Input, OUT+/- Output. Built-in current limit function.

XL4015 DC-DC Step Down Adjustable Power Supply Module The XL4015 power module is a DC to DC step-down (BUCK) power module that operates at a switching frequency of 180kHz. In such high frequency, it provides smaller-sized filter components compared with low frequency switching regulators. This DC-DC switching buck converter is capable of driving a 5A load with excellent line and load regulation. The main switching component is XL4015, an adjustable output version switching regulator. It is an efficient switching regulator and the output efficiency is significantly higher in comparison with the popular boost regulators. At higher input voltages, the regulator operates at a switching frequency of 180kHz, thus allowing the overall board size to be smaller and space-saving. It is a high-power switching module with a toroidal ring inductor. Pinouts: XL4015 Pinouts Applications: DIY based power supply To serve the power requirements of high-power Audio-based circuits. High current applications with small space

XL4016E1 DC 4-40V to DC 1.25-36V 8A Buck Converter Voltage Regulator 36V 24V 12V to 5V The XL4016 is a type of power converter that can lower the voltage efficiently and smoothly. It can handle a load of up to 12 amps and has good control over the output power, even when the input power varies. You only need a few extra parts to use this converter, as it already has built-in controls and a steady output frequency. The converter's control system can adjust how much power is delivered, anywhere from 0% to 100%. If there is too much current flowing, the converter has a safety feature that reduces its frequency. This helps protect the system from damage. Also, the converter has a built-in system to reduce the need for many extra components. Features: Wide 8V to 36V Input Voltage Range Output Adjustable from 1.25V to 32V High efficiency up to 96% Built-in thermal shutdown function Built-in current limit function Built-in output short protection function Excellent line and load regulation Applications: LCD Monitor and LCD TV Portable instrument power supply Telecom / Networking Equipment

XL6009 Boost Module The XL6009 Step Up module is one of the widely used modules, where there is a requirement of having a specific fixed output voltage, even when the input voltage is below or above the required output voltage. XL6009 module is a non-isolated step-up boost voltage converter featuring adjustable output voltage and high efficiency. It converts input voltage of 5-32V DC to an output voltage of 4-38V DC. Note: When using these modules remember that the output current will be a lot less than the input current, (remember - W = VA). For example, if you have a 10V output at 1A from a 5V input, the input current will be around 3.6A. The real-life maximum amount of power you can get out of these things is around 10W. Output current is greater than 2.5A (or output power greater than 10W) to work long hours, please add a heat sink. Features The performance is much higher than LM2577. Non-isolated Boost converter. It has a non-synchronous rectifier. Small and Handy voltage regulator module. Applications: Solar Cell Car Regulator Wind Power

XL6019 DC-DC 5A Adjustable Boost Power Supply Module DC to DC step up module based on the upgraded XL-Semi XL-6019, offering up to 5A switching current and conversion efficiency of up to 97%. This XL6019 boost converter has two input pins for VCC and GND on the left side of the module. It has two output pins on the right side of the module. To get the desired output voltage you have to rotate the trimpot screw. It changes the feedback resistance value and thus the output voltage with respect to the input voltage. As this module is a step-up converter, therefore, the output current is always smaller than the input current. If the output power is greater than 10W then add the heat sink with the module otherwise it may damage the module. Features With reverse connect protection, output 5V / 12V / 24V adjustable, beyond LM2577 performance. The built-in thermal protection, over-current protection reliability. Wide input voltage range, the input voltage up to 35V. Adjustable output voltage, maximum support 40V. The built-in thermal protection, over-current protection full reliability protection circuit, high reliability. System conversion efficiency can achieve 90% above, convenient thermal design. TO263-5 l standard packaging, suitable for booster application within 30W. Also check the LM2596 Mini 360 Aircraft Power Supply Step-down Module . It is a non-isolated BUCK module with synchronous rectification. The module features an integrally molded power inductor and a synchronous rectifier control chip. It includes built-in 160°C thermal shutdown for safety and boasts low output ripple of 30mV (no-load).

XL6019 DC-DC 5A Adjustable Boost Power Supply Module(RED) DC to DC step up module based on the upgraded XL-Semi XL-6019, offering up to 5A switching current and conversion efficiency of up to 97%. This XL6019 boost converter has two input pins for VCC and GND on the left side of the module. It has two output pins on the right side of the module. To get the desired output voltage you have to rotate the trimpot screw. It changes the feedback resistance value and thus the output voltage with respect to the input voltage. As this module is a step-up converter, therefore, the output current is always smaller than the input current. If the output power is greater than 10W then add the heat sink with the module otherwise it may damage the module. Features With reverse connect protection, output 5V / 12V / 24V adjustable, beyond LM2577 performance. The built-in thermal protection, over-current protection reliability. Wide input voltage range, the input voltage up to 35V. Adjustable output voltage, maximum support 40V. The built-in thermal protection, over-current protection full reliability protection circuit, high reliability. System conversion efficiency can achieve 90% above, convenient thermal design. TO263-5 l standard packaging, suitable for booster application within 30W. Also check the LM2596 Mini 360 Aircraft Power Supply Step-down Module . It is a non-isolated BUCK module with synchronous rectification. The module features an integrally molded power inductor and a synchronous rectifier control chip. It includes built-in 160°C thermal shutdown for safety and boasts low output ripple of 30mV (no-load).

XL7015 Wide Range DC-DC Voltage Converter The XL7015 is a DC-DC step-down power supply buck module that operates at a fixed frequency of 150 kHz using PWM (Pulse Width Modulation) technology. It can efficiently drive a load of up to 0.8A with minimal ripple and excellent regulation of both line and load. This product is suitable for applications where the input voltage is higher than the output voltage, including battery-powered devices, power transformers, adjustable regulated power supplies, portable instruments for LCD monitors and TVs, as well as power supplies for telecom/networking equipment, 24V vehicle notebooks, and industrial equipment. Features High efficiency up to 85% The built-in thermal shutdown function Built-in current limit function In-Built output short protection function Excellent Line and Load Regulation

XM-18 Mini Digital Automatic Egg Incubator This is the XM-18 Mini Digital Automatic Egg Incubator, which is a researched product that uses microcomputer technology. This egg incubator is integrated with the latest electronic component for the highest accuracy. It features a digital temperature sensor and moisture-sensitive capacitance humidity sensor. This incubator is stable and reliable, time-saving, labor-saving, and easy to use. Features: High-quality circuit components, reliable quality, stable performance, leakage resistance, and durability. The automatic multi-function incubator equipping with the imported digital temperature sensor and France moisture-sensitive capacitance humidity sensor. Easy to control the temperature and humidity. The automatic multi-function incubator is miniaturized, intelligent, high measurement accuracy. This incubator is stable and reliable, time-saving, labor-saving, and easy to use. It is the ideal incubation equipment for the propagation of poultry and rare birds and small and medium-sized hatchery. Applications: Humidity and Temperature control in egg incubator

XR2206 High Precision Function Signal Generator DIY Kit The XR2206 High Precision Signal Generator DIY Kit is a compact and reliable solution for anyone looking to generate accurate sine, triangle, and square waveforms for testing, experimentation, or DIY electronics projects. Designed around the XR2206 IC, this kit lets you create frequencies ranging from 1Hz to 1MHz with smooth adjustability for both amplitude and frequency. Whether you're a beginner learning signal generation or an enthusiast building your own lab setup, this kit is easy to assemble thanks to its through-hole components and neatly designed layout. What makes this kit even more appealing is the included acrylic case, which provides protection while keeping the internal circuitry visible. The generator supports both 9V–12V external power and standard 9V batteries, making it versatile for bench setups as well as portable use. With stable performance, fine/coarse tuning controls, and clean waveform output, it’s perfect for students, hobbyists, and DIY engineers. Features: Generates high-quality sine, triangle, and square waveforms suitable for electronics testing and experimentation. Offers a wide frequency range from 1Hz to 1MHz, making it ideal for both low-frequency and high-frequency applications. Provides adjustable frequency and amplitude with separate coarse and fine tuning for precise control. Supports a wide 9–12V power input, including 9V battery operation (battery not included). Includes only through-hole components, ensuring easy assembly even for beginners. Comes with a transparent acrylic enclosure to protect the circuit while keeping the design visible.