If you’re into ham radio, CB radios, or just need a reliable 13.8V power source for your electronics bench, this power supply circuit is exactly what you need. The 13.8V output isn’t random. It’s the standard voltage for running 12V mobile radio equipment, accounting for the voltage drop you’d see in a vehicle’s electrical system … Read more
If you’re working with electronics, you know how frustrating it is to juggle multiple wall adapters for different projects. One day you need 5V for your Arduino, the next day 12V for a motor circuit. A variable power supply solves this problem once and for all. Today, I’m walking you through a practical 0-18V 3A … Read more
Hey friend, if you’ve ever blown up an LM317 while trying to pull more than an amp, or got frustrated because your “0–30 V” kit won’t go below 1.4 V, then this old-school but bullet-proof circuit is about to become your new best friend. This exact 1–30 V regulator built around the ancient-but-immortal LM723 precision … Read more
Hey friend, if you have ever wished for a bench power supply that actually does what the expensive lab units promise — smooth voltage adjustment from zero right up to 30 V and rock-solid current limiting all the way to 8 A — then this circuit is pure gold. I have built, repaired, and tweaked … Read more
Hey friend, if you’ve ever wanted a solid, adjustable bench power supply that can swing from 1.2 V all the way up to 35 V and still push a full 10 amps without crying, this classic UC3845 + TIP35C design is still one of the best DIY kings. I’ve built probably a dozen variations of … Read more
Hey, friend, if you’re into electronics and have come across this schematic for a 12V 7A switched-mode power supply using the UC3843 IC, you’re probably curious about how it all fits together. I remember tinkering with similar designs back in the day, and this one looks like a solid, straightforward flyback converter. It’s great for … 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 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