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Hey friend! If you’re diving into electronics projects, a reliable power supply is a must, and a switch-mode power supply (SMPS) is a fantastic choice. The schematic you shared, likely from a2help.com, shows a compact 12V 1A SMPS using the DK112 IC. This little circuit takes a wide AC input (85V-265V) and delivers a steady … Read more
Hey there! If you’re into wild electronics projects like I am, a plasma speaker might be your next big thrill. This isn’t your typical Bluetooth speaker—it uses high-voltage plasma arcs to create sound, turning electrical discharges into music or noise. The schematic you shared, likely from a2help.com, uses the SG3525 PWM controller and an IRF250N … Read more
Hey buddy, if you’re knee-deep in electronics projects like me, you know how crucial a solid power supply is. Whether you’re powering a hefty motor driver, charging batteries, or running a home lab setup, a reliable 12V 20A regulated supply can make or break your work. It delivers clean, stable 12V at up to 20 … Read more
Hey there! If you’re into electronics like I am, you’ve likely faced the need for a stable dual power supply for your projects. Imagine powering an audio amplifier or testing op-amps that require symmetric voltages with respect to ground. That’s where a 12V to 30-0-30V converter shines. It transforms a simple 12V input—such as a … Read more
Hey, if you’re looking to build a compact switched-mode power supply that converts mains AC to a stable 19V DC, this schematic using the TNY267 IC is a great starting point. The image labels it as the “Simplest SMPS With TNY267,” featuring a minimal design with a custom transformer on an EE19 core, basic rectification, … Read more
Hey, if you’re into DIY audio projects and want a straightforward way to amplify your music or voice signals, this easy class A amplifier schematic might catch your eye. The image shows a basic design using a BC212 PNP transistor for the preamp stage and an IRF540 N-channel MOSFET for the power output. It’s labeled … Read more
Hey, if you’ve been tinkering with electronics and come across bipolar junction transistors, or BJTs, you know they’re versatile little devices. But the way you connect them—known as configurations—can change everything about how they perform. The image you shared breaks it down nicely, showing the three main setups: common emitter, common base, and common collector, … Read more
Hey, if you’re diving into electronics and need a reliable way to control current for projects like LED lighting, battery charging, or component testing, an adjustable constant current source is a game-changer. The schematic you shared features the LM317 regulator set up to deliver 125-400mA, adjustable with a potentiometer. As an experienced electronics engineer, I’ve … Read more
Hey, if you’re into electronics and want to try your hand at radio transmission without the hassle of winding coils, this DIY coilless AM transmitter is perfect for you. The schematic you shared, labeled “Coilless AM Transmitter” with “No Tension For Coil,” uses common transistors like the 2SC1815 and BU446, along with resistors and capacitors, … Read more
Hey, if you’re tinkering with electronics and need to drop 12V down to a stable 5V for something like powering an Arduino, Raspberry Pi, or even car accessories, a buck converter is your go-to. I’ve been through plenty of these builds, and the LM2596 chip makes it straightforward. Looking at this image you shared, it’s … Read more