Projects Projects
+/-12V Dual Power Supply
This project is a solution to power up most of devices or projects requiring dual (+/-12V) power supply.
Dual Adjustable Power Supply
This project is a solution to power up most of devices or projects requiring dual (+/-) adjustable power supply.
9V to 48V DC-DC Converter
This project is a 8-12Vdc to +48Vdc DC-DC converter based on MC34063 switching regulator.
0-30V Laboratory Power Supply
This project is based on the 0-30 VDC Stabilized Power Supply with Current Control 0.002-3 A and a new PCB layout is introduced here.
Variable Power Supply with LM7812
This project is a simple variable power supply using the famous LM7812 regulator IC.
MCU Controlled Spot Welder
This project is a controller for a dual pulse spot welder that has some nice features that are controlled using a LCD interface.
Digital Multiple Voltage Power Supply
1.2 to 33 Volts DC @ 3 Amps Description This is simple to build microcontroller controlled power supply that can switch between 5 (or 32 or more) preconfigured voltages between 1.2 to 33 volts dc and up to 3 amps.
Mini variable power supply
Description T1 steps down AC voltage from 115VAC (or 220VAC) to about 8VAC and is then rectified via bridge rectifier BR1 to about 11.52Vdc.
Charger for mobile phones
Description Most mobile chargers do not have current/voltage reguLation or short-circuit protection.
Li-Ion Charger
Description The LP2951 regulator is manufactured by National Semiconductors.
Lead Acid Battery Charger #2
Description The above pictured schematic diagram is just a standard constant current model with a added current limiter, consisting of Q1, R1, and R4.
Lead Acid Battery Charger #1
Description Except for use as a normal Battery Charger, this circuit is perfect to ‘constant-charge’ a 12-Volt Lead-Acid Battery, like the one in your flight box, and keep it in optimum charged condition.