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Power Supplies (175)

Browse through a total of 175 power supply circuits. Great collection of power supply and PSU projects: battery chargers, regulators, solar power supplies.

DC to DC converters   battery chargers   battery indicators   battery monitors   variable power supplies   voltage and power inverters   voltage converters   voltage regulators  

XLPSM-2

XL4015 Power Supply Module – Secret Talks

T.K. Hareendran - 04/17/17

This is a succinct account of my experience with the cheap electronic power supply module from China, "DC-DC [...]
Inverter Schematic

Portable Power Inverter Circuit

T.K. Hareendran - 11/29/16

Recently, my neighbor expressed a deep interest in building a low-power inverter from scratch. This portable power inverter [...]
lipo charger circuit

Compact 2S LiPo Battery Charger

T.K. Hareendran - 09/28/16

The compact LiPo battery charger introduced here can be used to charge almost all standard 2S LiPo battery [...]
microcontroller power supply circuit

Smart Power Supply for Microcontroller Projects

T.K. Hareendran - 04/06/16

A good, reliable and easy to use dc power supply is probably the most important thing for every [...]
power surge protection circuit

Power-Back Surge Protection Circuit

T.K. Hareendran - 10/11/15

Power-Back Surge Protector is a simple yet effective solution for protecting your valuable and sensitive electric/electronic systems. Power-Back [...]
5V Power Bank with 3.7V Li-Ion Battery circuit

uC Li-Ion Power Bank w/ MC34063

T.K. Hareendran - 08/24/15

Lithium-Ion (Li-Ion) batteries have become popular for portable electronics and microcontroller projects because they boast the highest energy [...]
power supply voltage monitor circuit

uC 5V Power Supply Voltage Monitoring

T.K. Hareendran - 04/27/15

This circuit is a very simple voltage monitoring device for +5V VCC supply lines. It can be used [...]
microcontroller power supply circuit

Precision MicroController Power Supply Unit

T.K. Hareendran - 02/14/15

Lots of projects use the microcontroller (uC) as the ‘brain’ - for example as an intelligent controller in [...]
mcp1640 single cell to 3.3v boost converter

1.2V/1.5V Single Cell to 3.3V Boost Converter

P. Marian - 01/23/15

Sometimes I need a 3.3V power source but the only one that I have are the 1.2 volt [...]
1.5v to 3v boost converter

One Battery to 3 Volts Step-up (Boost) Converter

P. Marian - 01/21/15

With the help of this simple circuit you will be able to convert any voltage between 0.9V and [...]
36V Battery Level Indicator circuit

36V Battery Level Indicator

Jim Keith - 01/12/15

This battery level indicator offers (5) LEDs that light up progressively as the battery voltage increases. This is [...]
SMPS hack

Hack the PC SMPS!

T.K. Hareendran - 01/12/15

Modern personal computers (PC) use well designed, rich capacity and reliable switch mode power supplies (SMPS), which ought [...]
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