The Open Source Fusion USB 3.0 Charge Pro is an all-in-one keychain tool for secure and efficient USB charging. It features a USB Power Meter to monitor charging, a Cable Tester to check cable integrity, a USB Condom for data protection when charging in public, and a Power Splitter to charge multiple devices from one port—all in a compact design.

Buying a ready-made power supply would be too easy, so I decided to make my own.

This universal power supply board is a perfect match for powering the low power devices such as MCUs, Sensors & Modules with the best load and line regulation features. The board can take an AC or DC input of as low as 8V and as high as 28V to provide a multiple DC output voltages like 3.3V, 5V, 12V, variable DC output, and the output same as the input. The maximum load regulation is measured to be 60mV and the maximum line regulation is measured to be 0.2%/V.

PicoPD allows access to all USB PD 3.0 profile include PPS so that you can get the most current at any voltage out of your new USB-C charger

Battery charger with BD-type transistor

Double voltage source +15V / -15V and +5V / -5V stabilized

Monitor for equal voltage at the terminals of two 12V batteries.

A familiar circuit, but still useful.

It's a voltmeter that indicates battery status, more precisely the value of the voltage battery.

This circuit is made for a DIY builder, I left enough room for a heat sink. for the filter capacitor.

DIY High Performance & Fully Protected 300W Stereo Class D Amplifier using TAS5630B for your Active Speaker or High Power Bluetooth BomBox.

A pure sine wave inverter is a critical device. The highly efficient 12V/24V/48V pure sine wave inverter converts the DC power stored in the battery into standard household AC power, providing you with quiet AC power anytime and anywhere. Sine wave inverters are commonly used in a variety of applications, including off-grid or backup power systems, RVs, marine, and renewable energy installations.

You can use up to 24 white LEDs.

AMAZING DIY DESKTOP CHARGING STATION.IT IS MINI IN SIZE,BUT IYT HAS POWER LIKE MONSTER.

A simple and relatively inexpensive way to make an efficient DRSSTC (Dual Resonance Solid State) Tesla coil.

PWM, (Pulse Width Modulation) is the most efficient way to control analog circuits using digital outputs, by changing the duration and frequency of the signal.